Do we have any French speakers on the Panel? I have a radio that's
badly in need of realignment and the only instructions I can find are
a set in French. I can't use Google translate because they've used too
many abbreviations in the text and they won't parse any sense.

CD.

On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
(Liz Tuddenham) wrote:

>Cursitor Doom <cd@notformail.com> wrote:
>
>> Do we have any French speakers on the Panel? I have a radio that's
>> badly in need of realignment and the only instructions I can find are
>> a set in French. I can't use Google translate because they've used too
>> many abbreviations in the text and they won't parse any sense.
>
>I'm not a particularly fluent French speaker, but I could probably sort
>out some technical instructions in French If you want to send them to
>me, I'll have a go (you should be able to work out my e-mail address).

Many thanks indeed for your kind offer. I suspect it will probably
require a native French speaker to decypher, but who knows? :-)

On 12/20/24 22:16, Cursitor Doom wrote:
> On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
> (Liz Tuddenham) wrote:
>
>> Cursitor Doom <cd@notformail.com> wrote:
>>
>>> Do we have any French speakers on the Panel? I have a radio that's
>>> badly in need of realignment and the only instructions I can find are
>>> a set in French. I can't use Google translate because they've used too
>>> many abbreviations in the text and they won't parse any sense.
>>
>> I'm not a particularly fluent French speaker, but I could probably sort
>> out some technical instructions in French If you want to send them to
>> me, I'll have a go (you should be able to work out my e-mail address).
>
> Many thanks indeed for your kind offer. I suspect it will probably
> require a native French speaker to decypher, but who knows? :-)

I'm not a native French speaker, but I may be able to help anyway.
Fire away.

On Sat, 21 Dec 2024 00:05:08 +0100, Jeroen Belleman
<jeroen@nospam.please> wrote:

>On 12/20/24 22:16, Cursitor Doom wrote:
>> On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
>> (Liz Tuddenham) wrote:
>>
>>> Cursitor Doom <cd@notformail.com> wrote:
>>>
>>>> Do we have any French speakers on the Panel? I have a radio that's
>>>> badly in need of realignment and the only instructions I can find are
>>>> a set in French. I can't use Google translate because they've used too
>>>> many abbreviations in the text and they won't parse any sense.
>>>
>>> I'm not a particularly fluent French speaker, but I could probably sort
>>> out some technical instructions in French If you want to send them to
>>> me, I'll have a go (you should be able to work out my e-mail address).
>>
>> Many thanks indeed for your kind offer. I suspect it will probably
>> require a native French speaker to decypher, but who knows? :-)
>
>I'm not a native French speaker, but I may be able to help anyway.
>Fire away.

Well that's interesing as I had did think you might respond given some
of the background you've revealed here in the past. I don't have the
relevant page here right now, but will make it available tomorrow. It
is only the one page and only one column of that, so nothing too
onerous. I did show it to a genuine French chum of mine a few weeks
ago, but he was stumped by the technical side of it and couldn't
assist much, unfortunately. So it appears it needs someone who can
speak French fluently *and* understands the process of radio
alignment. I kind of guessed that might be you....

Cursitor Doom <cd@notformail.com> wrote:

> On Sat, 21 Dec 2024 00:05:08 +0100, Jeroen Belleman
> <jeroen@nospam.please> wrote:
>
> >On 12/20/24 22:16, Cursitor Doom wrote:
> >> On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
> >> (Liz Tuddenham) wrote:
> >>
> >>> Cursitor Doom <cd@notformail.com> wrote:
> >>>
> >>>> Do we have any French speakers on the Panel? I have a radio that's
> >>>> badly in need of realignment and the only instructions I can find are
> >>>> a set in French. I can't use Google translate because they've used too
> >>>> many abbreviations in the text and they won't parse any sense.
> >>>
> >>> I'm not a particularly fluent French speaker, but I could probably sort
> >>> out some technical instructions in French If you want to send them to
> >>> me, I'll have a go (you should be able to work out my e-mail address).
> >>
> >> Many thanks indeed for your kind offer. I suspect it will probably
> >> require a native French speaker to decypher, but who knows? :-)
> >
> >I'm not a native French speaker, but I may be able to help anyway.
> >Fire away.
>
> Well that's interesing as I had did think you might respond given some
> of the background you've revealed here in the past. I don't have the
> relevant page here right now, but will make it available tomorrow. It
> is only the one page and only one column of that, so nothing too
> onerous. I did show it to a genuine French chum of mine a few weeks
> ago, but he was stumped by the technical side of it and couldn't
> assist much, unfortunately. So it appears it needs someone who can
> speak French fluently *and* understands the process of radio
> alignment. I kind of guessed that might be you....

Many years ago Practical Wireless published an article about the French
819-line high-definition television service which had been translated
from French by someone who knew nothing about television or radio
terminologyy. It was hilarious nonsense but I eventually managed to
translate it back into French so that I could understand it.

If you post your text here, we can all have a go at it.

--
~ Liz Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk

On Sat, 21 Dec 2024 08:57:51 +0000, liz@poppyrecords.invalid.invalid
(Liz Tuddenham) wrote:

>Cursitor Doom <cd@notformail.com> wrote:
>
>> On Sat, 21 Dec 2024 00:05:08 +0100, Jeroen Belleman
>> <jeroen@nospam.please> wrote:
>>
>> >On 12/20/24 22:16, Cursitor Doom wrote:
>> >> On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
>> >> (Liz Tuddenham) wrote:
>> >>
>> >>> Cursitor Doom <cd@notformail.com> wrote:
>> >>>
>> >>>> Do we have any French speakers on the Panel? I have a radio that's
>> >>>> badly in need of realignment and the only instructions I can find are
>> >>>> a set in French. I can't use Google translate because they've used too
>> >>>> many abbreviations in the text and they won't parse any sense.
>> >>>
>> >>> I'm not a particularly fluent French speaker, but I could probably sort
>> >>> out some technical instructions in French If you want to send them to
>> >>> me, I'll have a go (you should be able to work out my e-mail address).
>> >>
>> >> Many thanks indeed for your kind offer. I suspect it will probably
>> >> require a native French speaker to decypher, but who knows? :-)
>> >
>> >I'm not a native French speaker, but I may be able to help anyway.
>> >Fire away.
>>
>> Well that's interesing as I had did think you might respond given some
>> of the background you've revealed here in the past. I don't have the
>> relevant page here right now, but will make it available tomorrow. It
>> is only the one page and only one column of that, so nothing too
>> onerous. I did show it to a genuine French chum of mine a few weeks
>> ago, but he was stumped by the technical side of it and couldn't
>> assist much, unfortunately. So it appears it needs someone who can
>> speak French fluently *and* understands the process of radio
>> alignment. I kind of guessed that might be you....
>
>
>Many years ago Practical Wireless published an article about the French
>819-line high-definition television service which had been translated
>from French by someone who knew nothing about television or radio
>terminologyy. It was hilarious nonsense but I eventually managed to
>translate it back into French so that I could understand it.
>
>If you post your text here, we can all have a go at it.

Sorry for the delay; took a bit of tracking down but I have it now:

https://disk.yandex.com/i/3SiZ6rN_k-fP4w

It's only page 1 that needs the translation - and of that, in
particular the abbreviated bits. I haven't read French since I was in
school about a hundred years ago, so it's all Dutch to me. :-)

Cursitor Doom <cd@notformail.com> wrote:

[...]
> Sorry for the delay; took a bit of tracking down but I have it now:
>
> https://disk.yandex.com/i/3SiZ6rN_k-fP4w

Here's my version. I couldn't display the tables as tables, so I have
repeated the headers as individual paragraphs. One or two bits didn't
make sense, so I have indicated them with question marks. See the
originalpublication for the diode probe circuit.

Beware, the text is scattered with roman numerals.

INSTRUCTIONS FOR ADJUSTMENT

Agjustment on 9v D.C.,

Adjustment of the final audio Push-Pull stage.

Insert a milliameter in place of the link at the Collector of AC 188 K
(use point -x-). Adjust the quiescent current to 6.5mA by means of R410
(500 0hms). After adjusting the current, resolder the link.

Adjustment of the IF amplifier:

By means of R515, adjust the Collector current of T IV to obtain a
voltage drop of 1.35V across the Emitter resistorR518

-----------------------------

Adjustments FM intermediate frequency 10.7 Mhz Switched to "FM".

Adjustment: F VII
Couple wobbulator output to: MP5
Measuring equipment: Diode probe [as circuit] to F VII point 6
Adjust for: (a) Off tune. ( b) At maximum and symmetrical

Adjustment: F VI & F V
Couple wobbulator output to: MP3
Measuring equipment: Diode probe [as circuit] to F VII point 6
Adjust for: (c) & (d) maximum and symmetrical

Adjustment: F IV & F III
Couple wobbulator output to: MP2
Measuring equipment: Diode probe [as circuit] to F VII point 6
Adjust for: (e) & (f) maximum and symmetrical

Adjustment: FII & FI
Couple wobbulator output to: ?close? to mixer
Measuring equipment: Diode probe [as circuit] to F VII point 6
Adjust for: (g) & (h) maximum and symmetrical

Adjustment: Discriminator
Couple wobbulator output to: MP5
Measuring equipment: Across 50 kilohm cable on MP11 (at audio input)
Adjust for: symetricality. During this sdjustment the signal must be
very weak so that FI doesn't limit.

-----------------------------

Adjustments AM intermediate frequency 460 Khz Switched to Medium Wave
["PO".]

Adjustment: F XIII & F XII
Couple wobbulator output to: MP3 F III
Measuring equipment: Test point ?? MP4
Adjust for: (I) & (II) maximum and symmetrical

Adjustment: FXI
Couple wobbulator output to: MP8
Measuring equipment: Test point ?? MP4
Adjust for: (III) maximum and symmetrical

Adjustment: F X & F IX
Couple wobbulator output to: CV AM, MP7
Measuring equipment: Test point ?? MP4
Adjust for: (IV) & (V) maximum and symmetrical

--------------------------

Adjustment of the AM oscillator and input stage.

When aligning Long Wave and Medium Wave, couple to the ferrite rod
aeraial across the frame [????]. Short Wave alignmnet is done with the
telescopic aerial unsoldered. The signal is injected by a 15pf
capacitor into the telescopic aerial terminal.

Medium Wave
Tuning dial set to 560 Khz
Adjust oscillator for (1) maximum
Adjust input circuit for (3) max
Mixer sensitivity 13uV
Oscillator output 60 - 90 mV

Medium Wave
Tuning dial set to 1450 Khz
Adjust oscillator for (2) maximum
Adjust input circuit for (4) max
Mixer sensitivity 14uV
Oscillator output 60 - 90 mV

Long Wave
Tuning dial set to 160 Khz
Adjust oscillator for ---
Adjust input circuit for (6) max
Mixer sensitivity 13uV
Oscillator output 65 - 95 mV

Long Wave
Tuning dial set to 240 Khz
Adjust oscillator for (5) maximum
Adjust input circuit for (7) max
Mixer sensitivity 10 uV
Oscillator output 65 - 95 mV

Short Wave
Tuning dial set to 6.6 Mhz
Adjust oscillator for (8) maximum
Adjust input circuit for (10) max
Mixer sensitivity 5 uV
Oscillator output 35 - 90 mV

Short Wave
Tuning dial set to 15 Mhz
Adjust oscillator for (9) maximum
Adjust input circuit for (11) max
Mixer sensitivity 4.5 uV
Oscillator output 35 - 90 mV

---------------------

Oscillator and IF alignment

Tuning dial set to 88 Mhz
Adjust oscillator for (A) maximum
Adjust IF coil for (C) max
Hiss level around 5 kT0 ... [No idea what that means]
Oscillator voltage on Emitter of T II 75 - 85 mV

Tuning dial set to 106 Mhz
Adjust oscillator for (B) maximum
Adjust IF coil for (D) max
Hiss level around 5 kT0 ... [No idea what that means]
Oscillator voltage on Emitter of T II 75 - 85 mV

Notes:
Inject the signal from an oscillator with an internal impedance of 60
ohms directly into the mixer. After alignment, coupled by 60 ohms, the
fundamental of the oscillator into the input of the mixer must be less
than 2 mV.

--
~ Liz Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk

On 12/21/24 14:57, Cursitor Doom wrote:
> On Sat, 21 Dec 2024 08:57:51 +0000, liz@poppyrecords.invalid.invalid
> (Liz Tuddenham) wrote:
>
>> Cursitor Doom <cd@notformail.com> wrote:
>>
>>> On Sat, 21 Dec 2024 00:05:08 +0100, Jeroen Belleman
>>> <jeroen@nospam.please> wrote:
>>>
>>>> On 12/20/24 22:16, Cursitor Doom wrote:
>>>>> On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
>>>>> (Liz Tuddenham) wrote:
>>>>>
>>>>>> Cursitor Doom <cd@notformail.com> wrote:
>>>>>>
>>>>>>> Do we have any French speakers on the Panel? I have a radio that's
>>>>>>> badly in need of realignment and the only instructions I can find are
>>>>>>> a set in French. I can't use Google translate because they've used too
>>>>>>> many abbreviations in the text and they won't parse any sense.
>>>>>>
>>>>>> I'm not a particularly fluent French speaker, but I could probably sort
>>>>>> out some technical instructions in French If you want to send them to
>>>>>> me, I'll have a go (you should be able to work out my e-mail address).
>>>>>
>>>>> Many thanks indeed for your kind offer. I suspect it will probably
>>>>> require a native French speaker to decypher, but who knows? :-)
>>>>
>>>> I'm not a native French speaker, but I may be able to help anyway.
>>>> Fire away.
>>>
>>> Well that's interesing as I had did think you might respond given some
>>> of the background you've revealed here in the past. I don't have the
>>> relevant page here right now, but will make it available tomorrow. It
>>> is only the one page and only one column of that, so nothing too
>>> onerous. I did show it to a genuine French chum of mine a few weeks
>>> ago, but he was stumped by the technical side of it and couldn't
>>> assist much, unfortunately. So it appears it needs someone who can
>>> speak French fluently *and* understands the process of radio
>>> alignment. I kind of guessed that might be you....
>>
>>
>> Many years ago Practical Wireless published an article about the French
>> 819-line high-definition television service which had been translated
>>from French by someone who knew nothing about television or radio
>> terminologyy. It was hilarious nonsense but I eventually managed to
>> translate it back into French so that I could understand it.
>>
>> If you post your text here, we can all have a go at it.
>
> Sorry for the delay; took a bit of tracking down but I have it now:
>
> https://disk.yandex.com/i/3SiZ6rN_k-fP4w
>
> It's only page 1 that needs the translation - and of that, in
> particular the abbreviated bits. I haven't read French since I was in
> school about a hundred years ago, so it's all Dutch to me. :-)

This was translated from German into French by someone who also
did not know clearly what it all meant. Not everything makes
perfect sense.

Also, while it doesn't say so, many of the adjustments interact,
so you may have to go back and forth a few times. Anyway, here
goes.

Jeroen Belleman

===============================================================

-- DC current adjustments (for 9V supply)
- Adjustment of the push-pull audio stage:
Cut the solder bridge marked -x- in the collector trace of the
AC188 T11 and insert a current meter. Adjust R410 for 6.5mA.
Restore the bridge.
- Adjustment of the IF amplifier:
Set R515 to obtain 1.35V across T4's emitter resistor R518.

-- Adjustment of the FM-IF stages. The radio should be set to "FM".
Connect a wobbulator centered on 10.7MHz at MP5 and the diode
detector shown at ZF VII (I think...) MP6. Detune ZF VIII (a).
Then tune ZFVII (b) for a symmetrical maximum response.
- Inject signal at MP3 and tune ZF VI (c) and ZF V (d) for
symmetrical maximum response.
- Inject signal on MP2 and adjust ZF IV (e) and ZF III (f) for
symmetrical maximum response.
- Inject a weakly coupled signal at the mixer (MP1?) and adjust
ZF II (g) and ZF I (h) for symmetrical maximum response.
- Discriminator: Inject signal at MP5, with a level low
enough that no limiting occurs in the IF strip. Observe the
signal at MP11 (audio amplifier input) with load impedance 50k.
Adjust ZF VIII (a) for symmetrical response.

-- Adjustment of the AM IF (460kHz) stages. The radio should be
set to "PO" (AM, 560-1450kHz). Connect a measurement instrument
at MP4 (Weakly coupled).
- Inject a wobbulator signal at MP3 and adjust ZF XIII and ZF XII
for symmetrical maximum response.
- Inject signal at MP8 and adjust ZF XI for symmetrical maximum
response.
- Inject signal at MP7 and adjust ZF X and ZF IX for symmetrical
maximum response.

-- Adjustment of local oscillator and AM input. For short and
medium wave, couple signal into the ferrite rod antenna using
the frame. For short wave, remove the rod antenna and couple
signal at the antenna connection through 15pF.
Tune to 560kHz and adjust (1) and (3) for maximum response.
Mixer sensitivity 13uV and oscillator output 60-90mV.
Tune to 1450 kHz and adjust (2) and (4) for maximum response.
- Set the radio to GO (Long wave, 160-240kHz).
Tune to 160kHz and adjust (5) and (6) for maximum response.
Mixer sensitivity 13uV and oscillator output 65-95mV.
- Set the radio to OC (Short wave, 6.5-15MHz)
Tune to 6.5MHz and adjust (8) and (10) for maximum response.
Tune to 15MHz and adjust (9) and (11) for maximum response.
Mixer sensitivity 5uV and oscillator output 35-90mV.

-- Adjustment of the FM LO. Signal from an RF generator with
60 Ohm output impedance injected directly at the mixer (MP1?)
with a loaded signal level <2mV. Set the radio to FM.
- Tune to 88MHz and adjust (A) and (C) for maximum response.
- Tune to 106MHz and adjust (B) and (D) for maximum response,
Noise level is about 5 times kT0. Oscillator output voltage
75-85mV (at T2's emitter).

On Sat, 21 Dec 2024 21:31:51 +0100, Jeroen Belleman
<jeroen@nospam.please> wrote:

>On 12/21/24 14:57, Cursitor Doom wrote:
>> On Sat, 21 Dec 2024 08:57:51 +0000, liz@poppyrecords.invalid.invalid
>> (Liz Tuddenham) wrote:
>>
>>> Cursitor Doom <cd@notformail.com> wrote:
>>>
>>>> On Sat, 21 Dec 2024 00:05:08 +0100, Jeroen Belleman
>>>> <jeroen@nospam.please> wrote:
>>>>
>>>>> On 12/20/24 22:16, Cursitor Doom wrote:
>>>>>> On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
>>>>>> (Liz Tuddenham) wrote:
>>>>>>
>>>>>>> Cursitor Doom <cd@notformail.com> wrote:
>>>>>>>
>>>>>>>> Do we have any French speakers on the Panel? I have a radio that's
>>>>>>>> badly in need of realignment and the only instructions I can find are
>>>>>>>> a set in French. I can't use Google translate because they've used too
>>>>>>>> many abbreviations in the text and they won't parse any sense.
>>>>>>>
>>>>>>> I'm not a particularly fluent French speaker, but I could probably sort
>>>>>>> out some technical instructions in French If you want to send them to
>>>>>>> me, I'll have a go (you should be able to work out my e-mail address).
>>>>>>
>>>>>> Many thanks indeed for your kind offer. I suspect it will probably
>>>>>> require a native French speaker to decypher, but who knows? :-)
>>>>>
>>>>> I'm not a native French speaker, but I may be able to help anyway.
>>>>> Fire away.
>>>>
>>>> Well that's interesing as I had did think you might respond given some
>>>> of the background you've revealed here in the past. I don't have the
>>>> relevant page here right now, but will make it available tomorrow. It
>>>> is only the one page and only one column of that, so nothing too
>>>> onerous. I did show it to a genuine French chum of mine a few weeks
>>>> ago, but he was stumped by the technical side of it and couldn't
>>>> assist much, unfortunately. So it appears it needs someone who can
>>>> speak French fluently *and* understands the process of radio
>>>> alignment. I kind of guessed that might be you....
>>>
>>>
>>> Many years ago Practical Wireless published an article about the French
>>> 819-line high-definition television service which had been translated
>>>from French by someone who knew nothing about television or radio
>>> terminologyy. It was hilarious nonsense but I eventually managed to
>>> translate it back into French so that I could understand it.
>>>
>>> If you post your text here, we can all have a go at it.
>>
>> Sorry for the delay; took a bit of tracking down but I have it now:
>>
>> https://disk.yandex.com/i/3SiZ6rN_k-fP4w
>>
>> It's only page 1 that needs the translation - and of that, in
>> particular the abbreviated bits. I haven't read French since I was in
>> school about a hundred years ago, so it's all Dutch to me. :-)
>
>
>This was translated from German into French by someone who also
>did not know clearly what it all meant. Not everything makes
>perfect sense.
>
>Also, while it doesn't say so, many of the adjustments interact,
>so you may have to go back and forth a few times. Anyway, here
>goes.
>
>Jeroen Belleman
>
>
>===============================================================
>
>-- DC current adjustments (for 9V supply)
> - Adjustment of the push-pull audio stage:
> Cut the solder bridge marked -x- in the collector trace of the
> AC188 T11 and insert a current meter. Adjust R410 for 6.5mA.
> Restore the bridge.
> - Adjustment of the IF amplifier:
> Set R515 to obtain 1.35V across T4's emitter resistor R518.
>
>-- Adjustment of the FM-IF stages. The radio should be set to "FM".
> Connect a wobbulator centered on 10.7MHz at MP5 and the diode
> detector shown at ZF VII (I think...) MP6. Detune ZF VIII (a).
> Then tune ZFVII (b) for a symmetrical maximum response.
> - Inject signal at MP3 and tune ZF VI (c) and ZF V (d) for
> symmetrical maximum response.
> - Inject signal on MP2 and adjust ZF IV (e) and ZF III (f) for
> symmetrical maximum response.
> - Inject a weakly coupled signal at the mixer (MP1?) and adjust
> ZF II (g) and ZF I (h) for symmetrical maximum response.
> - Discriminator: Inject signal at MP5, with a level low
> enough that no limiting occurs in the IF strip. Observe the
> signal at MP11 (audio amplifier input) with load impedance 50k.
> Adjust ZF VIII (a) for symmetrical response.
>
>-- Adjustment of the AM IF (460kHz) stages. The radio should be
> set to "PO" (AM, 560-1450kHz). Connect a measurement instrument
> at MP4 (Weakly coupled).
> - Inject a wobbulator signal at MP3 and adjust ZF XIII and ZF XII
> for symmetrical maximum response.
> - Inject signal at MP8 and adjust ZF XI for symmetrical maximum
> response.
> - Inject signal at MP7 and adjust ZF X and ZF IX for symmetrical
> maximum response.
>
>-- Adjustment of local oscillator and AM input. For short and
> medium wave, couple signal into the ferrite rod antenna using
> the frame. For short wave, remove the rod antenna and couple
> signal at the antenna connection through 15pF.
> Tune to 560kHz and adjust (1) and (3) for maximum response.
> Mixer sensitivity 13uV and oscillator output 60-90mV.
> Tune to 1450 kHz and adjust (2) and (4) for maximum response.
> - Set the radio to GO (Long wave, 160-240kHz).
> Tune to 160kHz and adjust (5) and (6) for maximum response.
> Mixer sensitivity 13uV and oscillator output 65-95mV.
> - Set the radio to OC (Short wave, 6.5-15MHz)
> Tune to 6.5MHz and adjust (8) and (10) for maximum response.
> Tune to 15MHz and adjust (9) and (11) for maximum response.
> Mixer sensitivity 5uV and oscillator output 35-90mV.
>
>-- Adjustment of the FM LO. Signal from an RF generator with
> 60 Ohm output impedance injected directly at the mixer (MP1?)
> with a loaded signal level <2mV. Set the radio to FM.
> - Tune to 88MHz and adjust (A) and (C) for maximum response.
> - Tune to 106MHz and adjust (B) and (D) for maximum response,
> Noise level is about 5 times kT0. Oscillator output voltage
> 75-85mV (at T2's emitter).

Thanks, Jeroen. Geez, you just can't win with these bastards. I've got
a 50 ohm signal generator and a 70 ohm one - but that's not good
enough for 'em. No, they want me to splash out on a 60 ohm one and
where am I going to source one of those??
And it doesn't stop there! I thought all my vintage servicing voltage
reading requirements would be met when I bought an old analogue Avo
with 20kohms/volt. But now it seems I need to scratch around for a
500ohms/volt one. It seems they're expecting whoever services these
things to have access to an infinite range of test equipment to
satisfy whatever whim the manual compiler for the equipment had at the
time. <making overly theatrical gesture of despair>

On Sat, 21 Dec 2024 18:41:59 +0000, liz@poppyrecords.invalid.invalid
(Liz Tuddenham) wrote:

>Cursitor Doom <cd@notformail.com> wrote:
>
>[...]
>> Sorry for the delay; took a bit of tracking down but I have it now:
>>
>> https://disk.yandex.com/i/3SiZ6rN_k-fP4w
>
>Here's my version. I couldn't display the tables as tables, so I have
>repeated the headers as individual paragraphs. One or two bits didn't
>make sense, so I have indicated them with question marks. See the
>originalpublication for the diode probe circuit.
>
>Beware, the text is scattered with roman numerals.
>
>
>
>INSTRUCTIONS FOR ADJUSTMENT
>
>Agjustment on 9v D.C.,
>
>
>Adjustment of the final audio Push-Pull stage.
>
>Insert a milliameter in place of the link at the Collector of AC 188 K
>(use point -x-). Adjust the quiescent current to 6.5mA by means of R410
>(500 0hms). After adjusting the current, resolder the link.
>
>
>Adjustment of the IF amplifier:
>
>By means of R515, adjust the Collector current of T IV to obtain a
>voltage drop of 1.35V across the Emitter resistorR518
>
>-----------------------------
>
>Adjustments FM intermediate frequency 10.7 Mhz Switched to "FM".
>
>Adjustment: F VII
>Couple wobbulator output to: MP5
>Measuring equipment: Diode probe [as circuit] to F VII point 6
>Adjust for: (a) Off tune. ( b) At maximum and symmetrical
>
>Adjustment: F VI & F V
>Couple wobbulator output to: MP3
>Measuring equipment: Diode probe [as circuit] to F VII point 6
>Adjust for: (c) & (d) maximum and symmetrical
>
>Adjustment: F IV & F III
>Couple wobbulator output to: MP2
>Measuring equipment: Diode probe [as circuit] to F VII point 6
>Adjust for: (e) & (f) maximum and symmetrical
>
>Adjustment: FII & FI
>Couple wobbulator output to: ?close? to mixer
>Measuring equipment: Diode probe [as circuit] to F VII point 6
>Adjust for: (g) & (h) maximum and symmetrical
>
>Adjustment: Discriminator
>Couple wobbulator output to: MP5
>Measuring equipment: Across 50 kilohm cable on MP11 (at audio input)
>Adjust for: symetricality. During this sdjustment the signal must be
>very weak so that FI doesn't limit.
>
>-----------------------------
>
>Adjustments AM intermediate frequency 460 Khz Switched to Medium Wave
>["PO".]
>
>Adjustment: F XIII & F XII
>Couple wobbulator output to: MP3 F III
>Measuring equipment: Test point ?? MP4
>Adjust for: (I) & (II) maximum and symmetrical
>
>Adjustment: FXI
>Couple wobbulator output to: MP8
>Measuring equipment: Test point ?? MP4
>Adjust for: (III) maximum and symmetrical
>
>Adjustment: F X & F IX
>Couple wobbulator output to: CV AM, MP7
>Measuring equipment: Test point ?? MP4
>Adjust for: (IV) & (V) maximum and symmetrical
>
>--------------------------
>
>Adjustment of the AM oscillator and input stage.
>
>When aligning Long Wave and Medium Wave, couple to the ferrite rod
>aeraial across the frame [????]. Short Wave alignmnet is done with the
>telescopic aerial unsoldered. The signal is injected by a 15pf
>capacitor into the telescopic aerial terminal.
>
>Medium Wave
>Tuning dial set to 560 Khz
>Adjust oscillator for (1) maximum
>Adjust input circuit for (3) max
>Mixer sensitivity 13uV
>Oscillator output 60 - 90 mV
>
>Medium Wave
>Tuning dial set to 1450 Khz
>Adjust oscillator for (2) maximum
>Adjust input circuit for (4) max
>Mixer sensitivity 14uV
>Oscillator output 60 - 90 mV
>
>Long Wave
>Tuning dial set to 160 Khz
>Adjust oscillator for ---
>Adjust input circuit for (6) max
>Mixer sensitivity 13uV
>Oscillator output 65 - 95 mV
>
>Long Wave
>Tuning dial set to 240 Khz
>Adjust oscillator for (5) maximum
>Adjust input circuit for (7) max
>Mixer sensitivity 10 uV
>Oscillator output 65 - 95 mV
>
>Short Wave
>Tuning dial set to 6.6 Mhz
>Adjust oscillator for (8) maximum
>Adjust input circuit for (10) max
>Mixer sensitivity 5 uV
>Oscillator output 35 - 90 mV
>
>Short Wave
>Tuning dial set to 15 Mhz
>Adjust oscillator for (9) maximum
>Adjust input circuit for (11) max
>Mixer sensitivity 4.5 uV
>Oscillator output 35 - 90 mV
>
>---------------------
>
>Oscillator and IF alignment
>
>Tuning dial set to 88 Mhz
>Adjust oscillator for (A) maximum
>Adjust IF coil for (C) max
>Hiss level around 5 kT0 ... [No idea what that means]
>Oscillator voltage on Emitter of T II 75 - 85 mV
>
>Tuning dial set to 106 Mhz
>Adjust oscillator for (B) maximum
>Adjust IF coil for (D) max
>Hiss level around 5 kT0 ... [No idea what that means]
>Oscillator voltage on Emitter of T II 75 - 85 mV
>
>Notes:
>Inject the signal from an oscillator with an internal impedance of 60
>ohms directly into the mixer. After alignment, coupled by 60 ohms, the
>fundamental of the oscillator into the input of the mixer must be less
>than 2 mV.

I have to say, fair play to you for that effort! It may or may not be
100% accurate, but will contribute with others' to eliminate any
remaining uncertainties with any luck.
Thanks again.

On 12/21/24 22:07, Cursitor Doom wrote:
> On Sat, 21 Dec 2024 21:31:51 +0100, Jeroen Belleman
> <jeroen@nospam.please> wrote:
>
>> On 12/21/24 14:57, Cursitor Doom wrote:
>>> On Sat, 21 Dec 2024 08:57:51 +0000, liz@poppyrecords.invalid.invalid
>>> (Liz Tuddenham) wrote:
>>>
>>>> Cursitor Doom <cd@notformail.com> wrote:
>>>>
>>>>> On Sat, 21 Dec 2024 00:05:08 +0100, Jeroen Belleman
>>>>> <jeroen@nospam.please> wrote:
>>>>>
>>>>>> On 12/20/24 22:16, Cursitor Doom wrote:
>>>>>>> On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
>>>>>>> (Liz Tuddenham) wrote:
>>>>>>>
>>>>>>>> Cursitor Doom <cd@notformail.com> wrote:
>>>>>>>>
>>>>>>>>> Do we have any French speakers on the Panel? I have a radio that's
>>>>>>>>> badly in need of realignment and the only instructions I can find are
>>>>>>>>> a set in French. I can't use Google translate because they've used too
>>>>>>>>> many abbreviations in the text and they won't parse any sense.
>>>>>>>>
>>>>>>>> I'm not a particularly fluent French speaker, but I could probably sort
>>>>>>>> out some technical instructions in French If you want to send them to
>>>>>>>> me, I'll have a go (you should be able to work out my e-mail address).
>>>>>>>
>>>>>>> Many thanks indeed for your kind offer. I suspect it will probably
>>>>>>> require a native French speaker to decypher, but who knows? :-)
>>>>>>
>>>>>> I'm not a native French speaker, but I may be able to help anyway.
>>>>>> Fire away.
>>>>>
>>>>> Well that's interesing as I had did think you might respond given some
>>>>> of the background you've revealed here in the past. I don't have the
>>>>> relevant page here right now, but will make it available tomorrow. It
>>>>> is only the one page and only one column of that, so nothing too
>>>>> onerous. I did show it to a genuine French chum of mine a few weeks
>>>>> ago, but he was stumped by the technical side of it and couldn't
>>>>> assist much, unfortunately. So it appears it needs someone who can
>>>>> speak French fluently *and* understands the process of radio
>>>>> alignment. I kind of guessed that might be you....
>>>>
>>>>
>>>> Many years ago Practical Wireless published an article about the French
>>>> 819-line high-definition television service which had been translated
>>> >from French by someone who knew nothing about television or radio
>>>> terminologyy. It was hilarious nonsense but I eventually managed to
>>>> translate it back into French so that I could understand it.
>>>>
>>>> If you post your text here, we can all have a go at it.
>>>
>>> Sorry for the delay; took a bit of tracking down but I have it now:
>>>
>>> https://disk.yandex.com/i/3SiZ6rN_k-fP4w
>>>
>>> It's only page 1 that needs the translation - and of that, in
>>> particular the abbreviated bits. I haven't read French since I was in
>>> school about a hundred years ago, so it's all Dutch to me. :-)
>>
>>
>> This was translated from German into French by someone who also
>> did not know clearly what it all meant. Not everything makes
>> perfect sense.
>>
>> Also, while it doesn't say so, many of the adjustments interact,
>> so you may have to go back and forth a few times. Anyway, here
>> goes.
>>
>> Jeroen Belleman
>>
>>
>> ===============================================================
>>
>> -- DC current adjustments (for 9V supply)
>> - Adjustment of the push-pull audio stage:
>> Cut the solder bridge marked -x- in the collector trace of the
>> AC188 T11 and insert a current meter. Adjust R410 for 6.5mA.
>> Restore the bridge.
>> - Adjustment of the IF amplifier:
>> Set R515 to obtain 1.35V across T4's emitter resistor R518.
>>
>> -- Adjustment of the FM-IF stages. The radio should be set to "FM".
>> Connect a wobbulator centered on 10.7MHz at MP5 and the diode
>> detector shown at ZF VII (I think...) MP6. Detune ZF VIII (a).
>> Then tune ZFVII (b) for a symmetrical maximum response.
>> - Inject signal at MP3 and tune ZF VI (c) and ZF V (d) for
>> symmetrical maximum response.
>> - Inject signal on MP2 and adjust ZF IV (e) and ZF III (f) for
>> symmetrical maximum response.
>> - Inject a weakly coupled signal at the mixer (MP1?) and adjust
>> ZF II (g) and ZF I (h) for symmetrical maximum response.
>> - Discriminator: Inject signal at MP5, with a level low
>> enough that no limiting occurs in the IF strip. Observe the
>> signal at MP11 (audio amplifier input) with load impedance 50k.
>> Adjust ZF VIII (a) for symmetrical response.
>>
>> -- Adjustment of the AM IF (460kHz) stages. The radio should be
>> set to "PO" (AM, 560-1450kHz). Connect a measurement instrument
>> at MP4 (Weakly coupled).
>> - Inject a wobbulator signal at MP3 and adjust ZF XIII and ZF XII
>> for symmetrical maximum response.
>> - Inject signal at MP8 and adjust ZF XI for symmetrical maximum
>> response.
>> - Inject signal at MP7 and adjust ZF X and ZF IX for symmetrical
>> maximum response.
>>
>> -- Adjustment of local oscillator and AM input. For short and
>> medium wave, couple signal into the ferrite rod antenna using
>> the frame. For short wave, remove the rod antenna and couple
>> signal at the antenna connection through 15pF.
>> Tune to 560kHz and adjust (1) and (3) for maximum response.
>> Mixer sensitivity 13uV and oscillator output 60-90mV.
>> Tune to 1450 kHz and adjust (2) and (4) for maximum response.
>> - Set the radio to GO (Long wave, 160-240kHz).
>> Tune to 160kHz and adjust (5) and (6) for maximum response.
>> Mixer sensitivity 13uV and oscillator output 65-95mV.
>> - Set the radio to OC (Short wave, 6.5-15MHz)
>> Tune to 6.5MHz and adjust (8) and (10) for maximum response.
>> Tune to 15MHz and adjust (9) and (11) for maximum response.
>> Mixer sensitivity 5uV and oscillator output 35-90mV.
>>
>> -- Adjustment of the FM LO. Signal from an RF generator with
>> 60 Ohm output impedance injected directly at the mixer (MP1?)
>> with a loaded signal level <2mV. Set the radio to FM.
>> - Tune to 88MHz and adjust (A) and (C) for maximum response.
>> - Tune to 106MHz and adjust (B) and (D) for maximum response,
>> Noise level is about 5 times kT0. Oscillator output voltage
>> 75-85mV (at T2's emitter).
>
> Thanks, Jeroen. Geez, you just can't win with these bastards. I've got
> a 50 ohm signal generator and a 70 ohm one - but that's not good
> enough for 'em. No, they want me to splash out on a 60 ohm one and
> where am I going to source one of those??
> And it doesn't stop there! I thought all my vintage servicing voltage
> reading requirements would be met when I bought an old analogue Avo
> with 20kohms/volt. But now it seems I need to scratch around for a
> 500ohms/volt one. It seems they're expecting whoever services these
> things to have access to an infinite range of test equipment to
> satisfy whatever whim the manual compiler for the equipment had at the
> time. <making overly theatrical gesture of despair>

I don't think that matters all that much, really. Your VNA will
do fine as a signal source and a scope will do fine to measure
resulting signals and voltages. If really necessary, put ten ohms
in series with your 50 Ohm source.

Jeroen Belleman

On Sat, 21 Dec 2024 22:31:36 +0100, Jeroen Belleman
<jeroen@nospam.please> wrote:

>On 12/21/24 22:07, Cursitor Doom wrote:
>> On Sat, 21 Dec 2024 21:31:51 +0100, Jeroen Belleman
>> <jeroen@nospam.please> wrote:
>>
>>> On 12/21/24 14:57, Cursitor Doom wrote:
>>>> On Sat, 21 Dec 2024 08:57:51 +0000, liz@poppyrecords.invalid.invalid
>>>> (Liz Tuddenham) wrote:
>>>>
>>>>> Cursitor Doom <cd@notformail.com> wrote:
>>>>>
>>>>>> On Sat, 21 Dec 2024 00:05:08 +0100, Jeroen Belleman
>>>>>> <jeroen@nospam.please> wrote:
>>>>>>
>>>>>>> On 12/20/24 22:16, Cursitor Doom wrote:
>>>>>>>> On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
>>>>>>>> (Liz Tuddenham) wrote:
>>>>>>>>
>>>>>>>>> Cursitor Doom <cd@notformail.com> wrote:
>>>>>>>>>
>>>>>>>>>> Do we have any French speakers on the Panel? I have a radio that's
>>>>>>>>>> badly in need of realignment and the only instructions I can find are
>>>>>>>>>> a set in French. I can't use Google translate because they've used too
>>>>>>>>>> many abbreviations in the text and they won't parse any sense.
>>>>>>>>>
>>>>>>>>> I'm not a particularly fluent French speaker, but I could probably sort
>>>>>>>>> out some technical instructions in French If you want to send them to
>>>>>>>>> me, I'll have a go (you should be able to work out my e-mail address).
>>>>>>>>
>>>>>>>> Many thanks indeed for your kind offer. I suspect it will probably
>>>>>>>> require a native French speaker to decypher, but who knows? :-)
>>>>>>>
>>>>>>> I'm not a native French speaker, but I may be able to help anyway.
>>>>>>> Fire away.
>>>>>>
>>>>>> Well that's interesing as I had did think you might respond given some
>>>>>> of the background you've revealed here in the past. I don't have the
>>>>>> relevant page here right now, but will make it available tomorrow. It
>>>>>> is only the one page and only one column of that, so nothing too
>>>>>> onerous. I did show it to a genuine French chum of mine a few weeks
>>>>>> ago, but he was stumped by the technical side of it and couldn't
>>>>>> assist much, unfortunately. So it appears it needs someone who can
>>>>>> speak French fluently *and* understands the process of radio
>>>>>> alignment. I kind of guessed that might be you....
>>>>>
>>>>>
>>>>> Many years ago Practical Wireless published an article about the French
>>>>> 819-line high-definition television service which had been translated
>>>> >from French by someone who knew nothing about television or radio
>>>>> terminologyy. It was hilarious nonsense but I eventually managed to
>>>>> translate it back into French so that I could understand it.
>>>>>
>>>>> If you post your text here, we can all have a go at it.
>>>>
>>>> Sorry for the delay; took a bit of tracking down but I have it now:
>>>>
>>>> https://disk.yandex.com/i/3SiZ6rN_k-fP4w
>>>>
>>>> It's only page 1 that needs the translation - and of that, in
>>>> particular the abbreviated bits. I haven't read French since I was in
>>>> school about a hundred years ago, so it's all Dutch to me. :-)
>>>
>>>
>>> This was translated from German into French by someone who also
>>> did not know clearly what it all meant. Not everything makes
>>> perfect sense.
>>>
>>> Also, while it doesn't say so, many of the adjustments interact,
>>> so you may have to go back and forth a few times. Anyway, here
>>> goes.
>>>
>>> Jeroen Belleman
>>>
>>>
>>> ===============================================================
>>>
>>> -- DC current adjustments (for 9V supply)
>>> - Adjustment of the push-pull audio stage:
>>> Cut the solder bridge marked -x- in the collector trace of the
>>> AC188 T11 and insert a current meter. Adjust R410 for 6.5mA.
>>> Restore the bridge.
>>> - Adjustment of the IF amplifier:
>>> Set R515 to obtain 1.35V across T4's emitter resistor R518.
>>>
>>> -- Adjustment of the FM-IF stages. The radio should be set to "FM".
>>> Connect a wobbulator centered on 10.7MHz at MP5 and the diode
>>> detector shown at ZF VII (I think...) MP6. Detune ZF VIII (a).
>>> Then tune ZFVII (b) for a symmetrical maximum response.
>>> - Inject signal at MP3 and tune ZF VI (c) and ZF V (d) for
>>> symmetrical maximum response.
>>> - Inject signal on MP2 and adjust ZF IV (e) and ZF III (f) for
>>> symmetrical maximum response.
>>> - Inject a weakly coupled signal at the mixer (MP1?) and adjust
>>> ZF II (g) and ZF I (h) for symmetrical maximum response.
>>> - Discriminator: Inject signal at MP5, with a level low
>>> enough that no limiting occurs in the IF strip. Observe the
>>> signal at MP11 (audio amplifier input) with load impedance 50k.
>>> Adjust ZF VIII (a) for symmetrical response.
>>>
>>> -- Adjustment of the AM IF (460kHz) stages. The radio should be
>>> set to "PO" (AM, 560-1450kHz). Connect a measurement instrument
>>> at MP4 (Weakly coupled).
>>> - Inject a wobbulator signal at MP3 and adjust ZF XIII and ZF XII
>>> for symmetrical maximum response.
>>> - Inject signal at MP8 and adjust ZF XI for symmetrical maximum
>>> response.
>>> - Inject signal at MP7 and adjust ZF X and ZF IX for symmetrical
>>> maximum response.
>>>
>>> -- Adjustment of local oscillator and AM input. For short and
>>> medium wave, couple signal into the ferrite rod antenna using
>>> the frame. For short wave, remove the rod antenna and couple
>>> signal at the antenna connection through 15pF.
>>> Tune to 560kHz and adjust (1) and (3) for maximum response.
>>> Mixer sensitivity 13uV and oscillator output 60-90mV.
>>> Tune to 1450 kHz and adjust (2) and (4) for maximum response.
>>> - Set the radio to GO (Long wave, 160-240kHz).
>>> Tune to 160kHz and adjust (5) and (6) for maximum response.
>>> Mixer sensitivity 13uV and oscillator output 65-95mV.
>>> - Set the radio to OC (Short wave, 6.5-15MHz)
>>> Tune to 6.5MHz and adjust (8) and (10) for maximum response.
>>> Tune to 15MHz and adjust (9) and (11) for maximum response.
>>> Mixer sensitivity 5uV and oscillator output 35-90mV.
>>>
>>> -- Adjustment of the FM LO. Signal from an RF generator with
>>> 60 Ohm output impedance injected directly at the mixer (MP1?)
>>> with a loaded signal level <2mV. Set the radio to FM.
>>> - Tune to 88MHz and adjust (A) and (C) for maximum response.
>>> - Tune to 106MHz and adjust (B) and (D) for maximum response,
>>> Noise level is about 5 times kT0. Oscillator output voltage
>>> 75-85mV (at T2's emitter).
>>
>> Thanks, Jeroen. Geez, you just can't win with these bastards. I've got
>> a 50 ohm signal generator and a 70 ohm one - but that's not good
>> enough for 'em. No, they want me to splash out on a 60 ohm one and
>> where am I going to source one of those??
>> And it doesn't stop there! I thought all my vintage servicing voltage
>> reading requirements would be met when I bought an old analogue Avo
>> with 20kohms/volt. But now it seems I need to scratch around for a
>> 500ohms/volt one. It seems they're expecting whoever services these
>> things to have access to an infinite range of test equipment to
>> satisfy whatever whim the manual compiler for the equipment had at the
>> time. <making overly theatrical gesture of despair>
>
>I don't think that matters all that much, really. Your VNA will
>do fine as a signal source and a scope will do fine to measure
>resulting signals and voltages. If really necessary, put ten ohms
>in series with your 50 Ohm source.

Cursitor Doom <cd@notformail.com> wrote:

> On Sat, 21 Dec 2024 21:31:51 +0100, Jeroen Belleman
> <jeroen@nospam.please> wrote:

[...
>
> Thanks, Jeroen. Geez, you just can't win with these bastards. I've got
> a 50 ohm signal generator and a 70 ohm one - but that's not good
> enough for 'em. No, they want me to splash out on a 60 ohm one and
> where am I going to source one of those??

Use the 50 ohm one and add a 10 ohm resistor.to the connection.

> And it doesn't stop there! I thought all my vintage servicing voltage
> reading requirements would be met when I bought an old analogue Avo
> with 20kohms/volt. But now it seems I need to scratch around for a
> 500ohms/volt one.

Parallel a resistor across a modern10 megohm electronic multimeter - or
just shrug and say it won't make mucch difference.if the meter
resistance is a bit higher.

> It seems they're expecting whoever services these
> things to have access to an infinite range of test equipment to
> satisfy whatever whim the manual compiler for the equipment had at the
> time. <making overly theatrical gesture of despair>

I seem to remember Grundig made their own test equipment, so they
probably just quoted the specification of whatever they were using on
the production line at the time.

A factory I worked in used interference from the fluorescent tube above
the workbench as the signal for the initial test of the audio stages.
One hand on the lamp and one finger on a screwdriver blade touching the
centre tag of the volume control - but I don't think they included that
test in the repair manual.

--
~ Liz Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk

On Sat, 21 Dec 2024 21:37:59 +0000, Cursitor Doom wrote:
>>in series with your 50 Ohm source.
>
> Yes, but you know what a *bitch* it is to find a purely resistive 10
> ohms....

Maybe just a length of nichrome wire?

Jonesy
--
Marvin L Jones | Marvin | W3DHJ.net | linux
38.238N 104.547W | @ jonz.net | Jonesy | FreeBSD
* Killfiling google & XXXXbanter.com: jonz.net/ng.htm

On 21 Dec 2024 22:30:23 GMT, Allodoxaphobia <trepidation@example.net>
wrote:

>On Sat, 21 Dec 2024 21:37:59 +0000, Cursitor Doom wrote:
>>>in series with your 50 Ohm source.
>>
>> Yes, but you know what a *bitch* it is to find a purely resistive 10
>> ohms....
>
>Maybe just a length of nichrome wire?

Still got parasitics. Avoiding them is a craft in itself.

>
>Jonesy

On Sat, 21 Dec 2024 08:57:51 +0000, liz@poppyrecords.invalid.invalid
(Liz Tuddenham) wrote:

>Cursitor Doom <cd@notformail.com> wrote:
>
>> On Sat, 21 Dec 2024 00:05:08 +0100, Jeroen Belleman
>> <jeroen@nospam.please> wrote:
>>
>> >On 12/20/24 22:16, Cursitor Doom wrote:
>> >> On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
>> >> (Liz Tuddenham) wrote:
>> >>
>> >>> Cursitor Doom <cd@notformail.com> wrote:
>> >>>
>> >>>> Do we have any French speakers on the Panel? I have a radio that's
>> >>>> badly in need of realignment and the only instructions I can find are
>> >>>> a set in French. I can't use Google translate because they've used too
>> >>>> many abbreviations in the text and they won't parse any sense.
>> >>>
>> >>> I'm not a particularly fluent French speaker, but I could probably sort
>> >>> out some technical instructions in French If you want to send them to
>> >>> me, I'll have a go (you should be able to work out my e-mail address).
>> >>
>> >> Many thanks indeed for your kind offer. I suspect it will probably
>> >> require a native French speaker to decypher, but who knows? :-)
>> >
>> >I'm not a native French speaker, but I may be able to help anyway.
>> >Fire away.
>>
>> Well that's interesing as I had did think you might respond given some
>> of the background you've revealed here in the past. I don't have the
>> relevant page here right now, but will make it available tomorrow. It
>> is only the one page and only one column of that, so nothing too
>> onerous. I did show it to a genuine French chum of mine a few weeks
>> ago, but he was stumped by the technical side of it and couldn't
>> assist much, unfortunately. So it appears it needs someone who can
>> speak French fluently *and* understands the process of radio
>> alignment. I kind of guessed that might be you....
>
>
>Many years ago Practical Wireless published an article about the French
>819-line high-definition television service which had been translated
>from French by someone who knew nothing about television or radio
>terminologyy. It was hilarious nonsense but I eventually managed to
>translate it back into French so that I could understand it.
>
>If you post your text here, we can all have a go at it.

You and Jeroen have pretty much nailed it between you, I reckon. But
just so as our sausage-eating fraternity here doesn't feel left out,
I'm posting a German version I managed to find:

https://disk.yandex.com/i/yMaIaSUfJMInUg

Cursitor Doom <cd@notformail.com> wrote:

> On 21 Dec 2024 22:30:23 GMT, Allodoxaphobia <trepidation@example.net>
> wrote:
>
> >On Sat, 21 Dec 2024 21:37:59 +0000, Cursitor Doom wrote:
> >>>in series with your 50 Ohm source.
> >>
> >> Yes, but you know what a *bitch* it is to find a purely resistive 10
> >> ohms....
> >
> >Maybe just a length of nichrome wire?
>
> Still got parasitics. Avoiding them is a craft in itself.

I wouldn't worry about the inductance of an ordianry 1/4 -Watt resistor
at the frequencies involved. The only point where it might make any
difference is the VHF input and oscillator tuning - and I can't think
you need a great level of accuracy to align a domestic portable radio.

It is even possible that they specified a 60-ohm sig gen because they
knew that most of the available ones would be near enough at either 50
or 75 0hms. Another possibility would be to try to make you think you
had to return the radio to their specialised service department for
repair. The avarage radio shop (if there are any left) simply wouldn't
care and would use whatever they had on the shelf above the workbench.

--
~ Liz Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk

On Sun, 22 Dec 2024 10:46:02 +0000, liz@poppyrecords.invalid.invalid
(Liz Tuddenham) wrote:

>Cursitor Doom <cd@notformail.com> wrote:
>
>> On 21 Dec 2024 22:30:23 GMT, Allodoxaphobia <trepidation@example.net>
>> wrote:
>>
>> >On Sat, 21 Dec 2024 21:37:59 +0000, Cursitor Doom wrote:
>> >>>in series with your 50 Ohm source.
>> >>
>> >> Yes, but you know what a *bitch* it is to find a purely resistive 10
>> >> ohms....
>> >
>> >Maybe just a length of nichrome wire?
>>
>> Still got parasitics. Avoiding them is a craft in itself.
>
>I wouldn't worry about the inductance of an ordianry 1/4 -Watt resistor
>at the frequencies involved. The only point where it might make any
>difference is the VHF input and oscillator tuning - and I can't think
>you need a great level of accuracy to align a domestic portable radio.
>
>It is even possible that they specified a 60-ohm sig gen because they
>knew that most of the available ones would be near enough at either 50
>or 75 0hms. Another possibility would be to try to make you think you
>had to return the radio to their specialised service department for
>repair. The avarage radio shop (if there are any left) simply wouldn't
>care and would use whatever they had on the shelf above the workbench

You'e right of course. I'm over-thinking this as usual. :(

Jeroen Belleman <jeroen@nospam.please> wrote:

> On 12/21/24 14:57, Cursitor Doom wrote:
> > On Sat, 21 Dec 2024 08:57:51 +0000, liz@poppyrecords.invalid.invalid
> > (Liz Tuddenham) wrote:
> >
> >> Cursitor Doom <cd@notformail.com> wrote:
> >>
> >>> On Sat, 21 Dec 2024 00:05:08 +0100, Jeroen Belleman
> >>> <jeroen@nospam.please> wrote:
> >>>
> >>>> On 12/20/24 22:16, Cursitor Doom wrote:
> >>>>> On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
> >>>>> (Liz Tuddenham) wrote:
> >>>>>
> >>>>>> Cursitor Doom <cd@notformail.com> wrote:
> >>>>>>
> >>>>>>> Do we have any French speakers on the Panel? I have a radio that's
> >>>>>>> badly in need of realignment and the only instructions I can find are
> >>>>>>> a set in French. I can't use Google translate because they've used too
> >>>>>>> many abbreviations in the text and they won't parse any sense.
> >>>>>>
> >>>>>> I'm not a particularly fluent French speaker, but I could probably sort
> >>>>>> out some technical instructions in French If you want to send them to
> >>>>>> me, I'll have a go (you should be able to work out my e-mail address).
> >>>>>
> >>>>> Many thanks indeed for your kind offer. I suspect it will probably
> >>>>> require a native French speaker to decypher, but who knows? :-)
> >>>>
> >>>> I'm not a native French speaker, but I may be able to help anyway.
> >>>> Fire away.
> >>>
> >>> Well that's interesing as I had did think you might respond given some
> >>> of the background you've revealed here in the past. I don't have the
> >>> relevant page here right now, but will make it available tomorrow. It
> >>> is only the one page and only one column of that, so nothing too
> >>> onerous. I did show it to a genuine French chum of mine a few weeks
> >>> ago, but he was stumped by the technical side of it and couldn't
> >>> assist much, unfortunately. So it appears it needs someone who can
> >>> speak French fluently *and* understands the process of radio
> >>> alignment. I kind of guessed that might be you....
> >>
> >>
> >> Many years ago Practical Wireless published an article about the French
> >> 819-line high-definition television service which had been translated
> >>from French by someone who knew nothing about television or radio
> >> terminologyy. It was hilarious nonsense but I eventually managed to
> >> translate it back into French so that I could understand it.
> >>
> >> If you post your text here, we can all have a go at it.
> >
> > Sorry for the delay; took a bit of tracking down but I have it now:
> >
> > https://disk.yandex.com/i/3SiZ6rN_k-fP4w
> >
> > It's only page 1 that needs the translation - and of that, in
> > particular the abbreviated bits. I haven't read French since I was in
> > school about a hundred years ago, so it's all Dutch to me. :-)
>
>
> This was translated from German into French by someone who also
> did not know clearly what it all meant. Not everything makes
> perfect sense.
>
> Also, while it doesn't say so, many of the adjustments interact,
> so you may have to go back and forth a few times. Anyway, here
> goes.
>
> Jeroen Belleman
>
>
> ===============================================================
>
> -- DC current adjustments (for 9V supply)
> - Adjustment of the push-pull audio stage:
> Cut the solder bridge marked -x- in the collector trace of the
> AC188 T11 and insert a current meter. Adjust R410 for 6.5mA.
> Restore the bridge.
> - Adjustment of the IF amplifier:
> Set R515 to obtain 1.35V across T4's emitter resistor R518.
>
> -- Adjustment of the FM-IF stages. The radio should be set to "FM".
> Connect a wobbulator centered on 10.7MHz at MP5 and the diode
> detector shown at ZF VII (I think...) MP6. Detune ZF VIII (a).
> Then tune ZFVII (b) for a symmetrical maximum response.
> - Inject signal at MP3 and tune ZF VI (c) and ZF V (d) for
> symmetrical maximum response.
> - Inject signal on MP2 and adjust ZF IV (e) and ZF III (f) for
> symmetrical maximum response.
> - Inject a weakly coupled signal at the mixer (MP1?) and adjust
> ZF II (g) and ZF I (h) for symmetrical maximum response.
> - Discriminator: Inject signal at MP5, with a level low
> enough that no limiting occurs in the IF strip. Observe the
> signal at MP11 (audio amplifier input) with load impedance 50k.
> Adjust ZF VIII (a) for symmetrical response.
>
> -- Adjustment of the AM IF (460kHz) stages. The radio should be
> set to "PO" (AM, 560-1450kHz). Connect a measurement instrument
> at MP4 (Weakly coupled).
> - Inject a wobbulator signal at MP3 and adjust ZF XIII and ZF XII
> for symmetrical maximum response.
> - Inject signal at MP8 and adjust ZF XI for symmetrical maximum
> response.
> - Inject signal at MP7 and adjust ZF X and ZF IX for symmetrical
> maximum response.
>
> -- Adjustment of local oscillator and AM input. For short and
> medium wave, couple signal into the ferrite rod antenna using
> the frame. For short wave, remove the rod antenna and couple
> signal at the antenna connection through 15pF.
> Tune to 560kHz and adjust (1) and (3) for maximum response.
> Mixer sensitivity 13uV and oscillator output 60-90mV.
> Tune to 1450 kHz and adjust (2) and (4) for maximum response.
> - Set the radio to GO (Long wave, 160-240kHz).
> Tune to 160kHz and adjust (5) and (6) for maximum response.
> Mixer sensitivity 13uV and oscillator output 65-95mV.
> - Set the radio to OC (Short wave, 6.5-15MHz)
> Tune to 6.5MHz and adjust (8) and (10) for maximum response.
> Tune to 15MHz and adjust (9) and (11) for maximum response.
> Mixer sensitivity 5uV and oscillator output 35-90mV.
>
> -- Adjustment of the FM LO. Signal from an RF generator with
> 60 Ohm output impedance injected directly at the mixer (MP1?)
> with a loaded signal level <2mV. Set the radio to FM.
> - Tune to 88MHz and adjust (A) and (C) for maximum response.
> - Tune to 106MHz and adjust (B) and (D) for maximum response,
> Noise level is about 5 times kT0. Oscillator output voltage
> 75-85mV (at T2's emitter).

It is interesting to compare the different approaches Jeroen and I have
taken. Although we began with exactly the same source material, we have
produced two markedly different ways of saying the same thing.

--
~ Liz Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk

On Sun, 22 Dec 2024 12:37:37 +0000, liz@poppyrecords.invalid.invalid
(Liz Tuddenham) wrote:

>Jeroen Belleman <jeroen@nospam.please> wrote:
>
>> On 12/21/24 14:57, Cursitor Doom wrote:
>> > On Sat, 21 Dec 2024 08:57:51 +0000, liz@poppyrecords.invalid.invalid
>> > (Liz Tuddenham) wrote:
>> >
>> >> Cursitor Doom <cd@notformail.com> wrote:
>> >>
>> >>> On Sat, 21 Dec 2024 00:05:08 +0100, Jeroen Belleman
>> >>> <jeroen@nospam.please> wrote:
>> >>>
>> >>>> On 12/20/24 22:16, Cursitor Doom wrote:
>> >>>>> On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
>> >>>>> (Liz Tuddenham) wrote:
>> >>>>>
>> >>>>>> Cursitor Doom <cd@notformail.com> wrote:
>> >>>>>>
>> >>>>>>> Do we have any French speakers on the Panel? I have a radio that's
>> >>>>>>> badly in need of realignment and the only instructions I can find are
>> >>>>>>> a set in French. I can't use Google translate because they've used too
>> >>>>>>> many abbreviations in the text and they won't parse any sense.
>> >>>>>>
>> >>>>>> I'm not a particularly fluent French speaker, but I could probably sort
>> >>>>>> out some technical instructions in French If you want to send them to
>> >>>>>> me, I'll have a go (you should be able to work out my e-mail address).
>> >>>>>
>> >>>>> Many thanks indeed for your kind offer. I suspect it will probably
>> >>>>> require a native French speaker to decypher, but who knows? :-)
>> >>>>
>> >>>> I'm not a native French speaker, but I may be able to help anyway.
>> >>>> Fire away.
>> >>>
>> >>> Well that's interesing as I had did think you might respond given some
>> >>> of the background you've revealed here in the past. I don't have the
>> >>> relevant page here right now, but will make it available tomorrow. It
>> >>> is only the one page and only one column of that, so nothing too
>> >>> onerous. I did show it to a genuine French chum of mine a few weeks
>> >>> ago, but he was stumped by the technical side of it and couldn't
>> >>> assist much, unfortunately. So it appears it needs someone who can
>> >>> speak French fluently *and* understands the process of radio
>> >>> alignment. I kind of guessed that might be you....
>> >>
>> >>
>> >> Many years ago Practical Wireless published an article about the French
>> >> 819-line high-definition television service which had been translated
>> >>from French by someone who knew nothing about television or radio
>> >> terminologyy. It was hilarious nonsense but I eventually managed to
>> >> translate it back into French so that I could understand it.
>> >>
>> >> If you post your text here, we can all have a go at it.
>> >
>> > Sorry for the delay; took a bit of tracking down but I have it now:
>> >
>> > https://disk.yandex.com/i/3SiZ6rN_k-fP4w
>> >
>> > It's only page 1 that needs the translation - and of that, in
>> > particular the abbreviated bits. I haven't read French since I was in
>> > school about a hundred years ago, so it's all Dutch to me. :-)
>>
>>
>> This was translated from German into French by someone who also
>> did not know clearly what it all meant. Not everything makes
>> perfect sense.
>>
>> Also, while it doesn't say so, many of the adjustments interact,
>> so you may have to go back and forth a few times. Anyway, here
>> goes.
>>
>> Jeroen Belleman
>>
>>
>> ===============================================================
>>
>> -- DC current adjustments (for 9V supply)
>> - Adjustment of the push-pull audio stage:
>> Cut the solder bridge marked -x- in the collector trace of the
>> AC188 T11 and insert a current meter. Adjust R410 for 6.5mA.
>> Restore the bridge.
>> - Adjustment of the IF amplifier:
>> Set R515 to obtain 1.35V across T4's emitter resistor R518.
>>
>> -- Adjustment of the FM-IF stages. The radio should be set to "FM".
>> Connect a wobbulator centered on 10.7MHz at MP5 and the diode
>> detector shown at ZF VII (I think...) MP6. Detune ZF VIII (a).
>> Then tune ZFVII (b) for a symmetrical maximum response.
>> - Inject signal at MP3 and tune ZF VI (c) and ZF V (d) for
>> symmetrical maximum response.
>> - Inject signal on MP2 and adjust ZF IV (e) and ZF III (f) for
>> symmetrical maximum response.
>> - Inject a weakly coupled signal at the mixer (MP1?) and adjust
>> ZF II (g) and ZF I (h) for symmetrical maximum response.
>> - Discriminator: Inject signal at MP5, with a level low
>> enough that no limiting occurs in the IF strip. Observe the
>> signal at MP11 (audio amplifier input) with load impedance 50k.
>> Adjust ZF VIII (a) for symmetrical response.
>>
>> -- Adjustment of the AM IF (460kHz) stages. The radio should be
>> set to "PO" (AM, 560-1450kHz). Connect a measurement instrument
>> at MP4 (Weakly coupled).
>> - Inject a wobbulator signal at MP3 and adjust ZF XIII and ZF XII
>> for symmetrical maximum response.
>> - Inject signal at MP8 and adjust ZF XI for symmetrical maximum
>> response.
>> - Inject signal at MP7 and adjust ZF X and ZF IX for symmetrical
>> maximum response.
>>
>> -- Adjustment of local oscillator and AM input. For short and
>> medium wave, couple signal into the ferrite rod antenna using
>> the frame. For short wave, remove the rod antenna and couple
>> signal at the antenna connection through 15pF.
>> Tune to 560kHz and adjust (1) and (3) for maximum response.
>> Mixer sensitivity 13uV and oscillator output 60-90mV.
>> Tune to 1450 kHz and adjust (2) and (4) for maximum response.
>> - Set the radio to GO (Long wave, 160-240kHz).
>> Tune to 160kHz and adjust (5) and (6) for maximum response.
>> Mixer sensitivity 13uV and oscillator output 65-95mV.
>> - Set the radio to OC (Short wave, 6.5-15MHz)
>> Tune to 6.5MHz and adjust (8) and (10) for maximum response.
>> Tune to 15MHz and adjust (9) and (11) for maximum response.
>> Mixer sensitivity 5uV and oscillator output 35-90mV.
>>
>> -- Adjustment of the FM LO. Signal from an RF generator with
>> 60 Ohm output impedance injected directly at the mixer (MP1?)
>> with a loaded signal level <2mV. Set the radio to FM.
>> - Tune to 88MHz and adjust (A) and (C) for maximum response.
>> - Tune to 106MHz and adjust (B) and (D) for maximum response,
>> Noise level is about 5 times kT0. Oscillator output voltage
>> 75-85mV (at T2's emitter).
>
>It is interesting to compare the different approaches Jeroen and I have
>taken. Although we began with exactly the same source material, we have
>produced two markedly different ways of saying the same thing.

Well, the important thing is that you agree on the key points.
Now it just so happens I have a vintage wobbulator (made by Knight
IIRC) which would be ideal for this job. It hasn't been used for about
20 years so it'll probably explode at switch-on, but that's nothing
unusual around here as my neighbours will attest.

Cursitor Doom <cd@notformail.com> wrote:

> On Sun, 22 Dec 2024 12:37:37 +0000, liz@poppyrecords.invalid.invalid
> (Liz Tuddenham) wrote:
>
> >Jeroen Belleman <jeroen@nospam.please> wrote:
> >
> >> On 12/21/24 14:57, Cursitor Doom wrote:
> >> > On Sat, 21 Dec 2024 08:57:51 +0000, liz@poppyrecords.invalid.invalid
> >> > (Liz Tuddenham) wrote:
> >> >
> >> >> Cursitor Doom <cd@notformail.com> wrote:
> >> >>
> >> >>> On Sat, 21 Dec 2024 00:05:08 +0100, Jeroen Belleman
> >> >>> <jeroen@nospam.please> wrote:
> >> >>>
> >> >>>> On 12/20/24 22:16, Cursitor Doom wrote:
> >> >>>>> On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
> >> >>>>> (Liz Tuddenham) wrote:
> >> >>>>>
> >> >>>>>> Cursitor Doom <cd@notformail.com> wrote:
> >> >>>>>>
> >> >>>>>>> Do we have any French speakers on the Panel? I have a radio
> >> >>>>>>> that's badly in need of realignment and the only instructions I
> >> >>>>>>> can find are a set in French. I can't use Google translate
> >> >>>>>>> because they've used too many abbreviations in the text and
> >> >>>>>>> they won't parse any sense.
> >> >>>>>>
> >> >>>>>> I'm not a particularly fluent French speaker, but I could
> >> >>>>>> probably sort out some technical instructions in French If you
> >> >>>>>> want to send them to me, I'll have a go (you should be able to
> >> >>>>>> work out my e-mail address).
> >> >>>>>
> >> >>>>> Many thanks indeed for your kind offer. I suspect it will
> >> >>>>> probably require a native French speaker to decypher, but who
> >> >>>>> knows? :-)
> >> >>>>
> >> >>>> I'm not a native French speaker, but I may be able to help anyway.
> >> >>>> Fire away.
> >> >>>
> >> >>> Well that's interesing as I had did think you might respond given some
> >> >>> of the background you've revealed here in the past. I don't have the
> >> >>> relevant page here right now, but will make it available tomorrow. It
> >> >>> is only the one page and only one column of that, so nothing too
> >> >>> onerous. I did show it to a genuine French chum of mine a few weeks
> >> >>> ago, but he was stumped by the technical side of it and couldn't
> >> >>> assist much, unfortunately. So it appears it needs someone who can
> >> >>> speak French fluently *and* understands the process of radio
> >> >>> alignment. I kind of guessed that might be you....
> >> >>
> >> >>
> >> >> Many years ago Practical Wireless published an article about the French
> >> >> 819-line high-definition television service which had been translated
> >> >>from French by someone who knew nothing about television or radio
> >> >> terminologyy. It was hilarious nonsense but I eventually managed to
> >> >> translate it back into French so that I could understand it.
> >> >>
> >> >> If you post your text here, we can all have a go at it.
> >> >
> >> > Sorry for the delay; took a bit of tracking down but I have it now:
> >> >
> >> > https://disk.yandex.com/i/3SiZ6rN_k-fP4w
> >> >
> >> > It's only page 1 that needs the translation - and of that, in
> >> > particular the abbreviated bits. I haven't read French since I was in
> >> > school about a hundred years ago, so it's all Dutch to me. :-)
> >>
> >>
> >> This was translated from German into French by someone who also
> >> did not know clearly what it all meant. Not everything makes
> >> perfect sense.
> >>
> >> Also, while it doesn't say so, many of the adjustments interact,
> >> so you may have to go back and forth a few times. Anyway, here
> >> goes.
> >>
> >> Jeroen Belleman
> >>
> >>
> >> ===============================================================
> >>
> >> -- DC current adjustments (for 9V supply)
> >> - Adjustment of the push-pull audio stage:
> >> Cut the solder bridge marked -x- in the collector trace of the
> >> AC188 T11 and insert a current meter. Adjust R410 for 6.5mA.
> >> Restore the bridge.
> >> - Adjustment of the IF amplifier:
> >> Set R515 to obtain 1.35V across T4's emitter resistor R518.
> >>
> >> -- Adjustment of the FM-IF stages. The radio should be set to "FM".
> >> Connect a wobbulator centered on 10.7MHz at MP5 and the diode
> >> detector shown at ZF VII (I think...) MP6. Detune ZF VIII (a).
> >> Then tune ZFVII (b) for a symmetrical maximum response.
> >> - Inject signal at MP3 and tune ZF VI (c) and ZF V (d) for
> >> symmetrical maximum response.
> >> - Inject signal on MP2 and adjust ZF IV (e) and ZF III (f) for
> >> symmetrical maximum response.
> >> - Inject a weakly coupled signal at the mixer (MP1?) and adjust
> >> ZF II (g) and ZF I (h) for symmetrical maximum response.
> >> - Discriminator: Inject signal at MP5, with a level low
> >> enough that no limiting occurs in the IF strip. Observe the
> >> signal at MP11 (audio amplifier input) with load impedance 50k.
> >> Adjust ZF VIII (a) for symmetrical response.
> >>
> >> -- Adjustment of the AM IF (460kHz) stages. The radio should be
> >> set to "PO" (AM, 560-1450kHz). Connect a measurement instrument
> >> at MP4 (Weakly coupled).
> >> - Inject a wobbulator signal at MP3 and adjust ZF XIII and ZF XII
> >> for symmetrical maximum response.
> >> - Inject signal at MP8 and adjust ZF XI for symmetrical maximum
> >> response.
> >> - Inject signal at MP7 and adjust ZF X and ZF IX for symmetrical
> >> maximum response.
> >>
> >> -- Adjustment of local oscillator and AM input. For short and
> >> medium wave, couple signal into the ferrite rod antenna using
> >> the frame. For short wave, remove the rod antenna and couple
> >> signal at the antenna connection through 15pF.
> >> Tune to 560kHz and adjust (1) and (3) for maximum response.
> >> Mixer sensitivity 13uV and oscillator output 60-90mV.
> >> Tune to 1450 kHz and adjust (2) and (4) for maximum response.
> >> - Set the radio to GO (Long wave, 160-240kHz).
> >> Tune to 160kHz and adjust (5) and (6) for maximum response.
> >> Mixer sensitivity 13uV and oscillator output 65-95mV.
> >> - Set the radio to OC (Short wave, 6.5-15MHz)
> >> Tune to 6.5MHz and adjust (8) and (10) for maximum response.
> >> Tune to 15MHz and adjust (9) and (11) for maximum response.
> >> Mixer sensitivity 5uV and oscillator output 35-90mV.
> >>
> >> -- Adjustment of the FM LO. Signal from an RF generator with
> >> 60 Ohm output impedance injected directly at the mixer (MP1?)
> >> with a loaded signal level <2mV. Set the radio to FM.
> >> - Tune to 88MHz and adjust (A) and (C) for maximum response.
> >> - Tune to 106MHz and adjust (B) and (D) for maximum response,
> >> Noise level is about 5 times kT0. Oscillator output voltage
> >> 75-85mV (at T2's emitter).
> >
> >It is interesting to compare the different approaches Jeroen and I have
> >taken. Although we began with exactly the same source material, we have
> >produced two markedly different ways of saying the same thing.
>
> Well, the important thing is that you agree on the key points.
> Now it just so happens I have a vintage wobbulator (made by Knight
> IIRC) which would be ideal for this job. It hasn't been used for about
> 20 years so it'll probably explode at switch-on, but that's nothing
> unusual around here as my neighbours will attest.

On 12/22/24 14:27, Cursitor Doom wrote:
> On Sun, 22 Dec 2024 12:37:37 +0000, liz@poppyrecords.invalid.invalid
> (Liz Tuddenham) wrote:
>
>> Jeroen Belleman <jeroen@nospam.please> wrote:
>>
>>> On 12/21/24 14:57, Cursitor Doom wrote:
>>>> On Sat, 21 Dec 2024 08:57:51 +0000, liz@poppyrecords.invalid.invalid
>>>> (Liz Tuddenham) wrote:
>>>>
>>>>> Cursitor Doom <cd@notformail.com> wrote:
>>>>>
>>>>>> On Sat, 21 Dec 2024 00:05:08 +0100, Jeroen Belleman
>>>>>> <jeroen@nospam.please> wrote:
>>>>>>
>>>>>>> On 12/20/24 22:16, Cursitor Doom wrote:
>>>>>>>> On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
>>>>>>>> (Liz Tuddenham) wrote:
>>>>>>>>
>>>>>>>>> Cursitor Doom <cd@notformail.com> wrote:
>>>>>>>>>
>>>>>>>>>> Do we have any French speakers on the Panel? I have a radio that's
>>>>>>>>>> badly in need of realignment and the only instructions I can find are
>>>>>>>>>> a set in French. I can't use Google translate because they've used too
>>>>>>>>>> many abbreviations in the text and they won't parse any sense.
>>>>>>>>>
>>>>>>>>> I'm not a particularly fluent French speaker, but I could probably sort
>>>>>>>>> out some technical instructions in French If you want to send them to
>>>>>>>>> me, I'll have a go (you should be able to work out my e-mail address).
>>>>>>>>
>>>>>>>> Many thanks indeed for your kind offer. I suspect it will probably
>>>>>>>> require a native French speaker to decypher, but who knows? :-)
>>>>>>>
>>>>>>> I'm not a native French speaker, but I may be able to help anyway.
>>>>>>> Fire away.
>>>>>>
>>>>>> Well that's interesing as I had did think you might respond given some
>>>>>> of the background you've revealed here in the past. I don't have the
>>>>>> relevant page here right now, but will make it available tomorrow. It
>>>>>> is only the one page and only one column of that, so nothing too
>>>>>> onerous. I did show it to a genuine French chum of mine a few weeks
>>>>>> ago, but he was stumped by the technical side of it and couldn't
>>>>>> assist much, unfortunately. So it appears it needs someone who can
>>>>>> speak French fluently *and* understands the process of radio
>>>>>> alignment. I kind of guessed that might be you....
>>>>>
>>>>>
>>>>> Many years ago Practical Wireless published an article about the French
>>>>> 819-line high-definition television service which had been translated
>>>> >from French by someone who knew nothing about television or radio
>>>>> terminologyy. It was hilarious nonsense but I eventually managed to
>>>>> translate it back into French so that I could understand it.
>>>>>
>>>>> If you post your text here, we can all have a go at it.
>>>>
>>>> Sorry for the delay; took a bit of tracking down but I have it now:
>>>>
>>>> https://disk.yandex.com/i/3SiZ6rN_k-fP4w
>>>>
>>>> It's only page 1 that needs the translation - and of that, in
>>>> particular the abbreviated bits. I haven't read French since I was in
>>>> school about a hundred years ago, so it's all Dutch to me. :-)
>>>
>>>
>>> This was translated from German into French by someone who also
>>> did not know clearly what it all meant. Not everything makes
>>> perfect sense.
>>>
>>> Also, while it doesn't say so, many of the adjustments interact,
>>> so you may have to go back and forth a few times. Anyway, here
>>> goes.
>>>
>>> Jeroen Belleman
>>>
>>>
>>> ===============================================================
>>>
>>> -- DC current adjustments (for 9V supply)
>>> - Adjustment of the push-pull audio stage:
>>> Cut the solder bridge marked -x- in the collector trace of the
>>> AC188 T11 and insert a current meter. Adjust R410 for 6.5mA.
>>> Restore the bridge.
>>> - Adjustment of the IF amplifier:
>>> Set R515 to obtain 1.35V across T4's emitter resistor R518.
>>>
>>> -- Adjustment of the FM-IF stages. The radio should be set to "FM".
>>> Connect a wobbulator centered on 10.7MHz at MP5 and the diode
>>> detector shown at ZF VII (I think...) MP6. Detune ZF VIII (a).
>>> Then tune ZFVII (b) for a symmetrical maximum response.
>>> - Inject signal at MP3 and tune ZF VI (c) and ZF V (d) for
>>> symmetrical maximum response.
>>> - Inject signal on MP2 and adjust ZF IV (e) and ZF III (f) for
>>> symmetrical maximum response.
>>> - Inject a weakly coupled signal at the mixer (MP1?) and adjust
>>> ZF II (g) and ZF I (h) for symmetrical maximum response.
>>> - Discriminator: Inject signal at MP5, with a level low
>>> enough that no limiting occurs in the IF strip. Observe the
>>> signal at MP11 (audio amplifier input) with load impedance 50k.
>>> Adjust ZF VIII (a) for symmetrical response.
>>>
>>> -- Adjustment of the AM IF (460kHz) stages. The radio should be
>>> set to "PO" (AM, 560-1450kHz). Connect a measurement instrument
>>> at MP4 (Weakly coupled).
>>> - Inject a wobbulator signal at MP3 and adjust ZF XIII and ZF XII
>>> for symmetrical maximum response.
>>> - Inject signal at MP8 and adjust ZF XI for symmetrical maximum
>>> response.
>>> - Inject signal at MP7 and adjust ZF X and ZF IX for symmetrical
>>> maximum response.
>>>
>>> -- Adjustment of local oscillator and AM input. For short and
>>> medium wave, couple signal into the ferrite rod antenna using
>>> the frame. For short wave, remove the rod antenna and couple
>>> signal at the antenna connection through 15pF.
>>> Tune to 560kHz and adjust (1) and (3) for maximum response.
>>> Mixer sensitivity 13uV and oscillator output 60-90mV.
>>> Tune to 1450 kHz and adjust (2) and (4) for maximum response.
>>> - Set the radio to GO (Long wave, 160-240kHz).
>>> Tune to 160kHz and adjust (5) and (6) for maximum response.
>>> Mixer sensitivity 13uV and oscillator output 65-95mV.
>>> - Set the radio to OC (Short wave, 6.5-15MHz)
>>> Tune to 6.5MHz and adjust (8) and (10) for maximum response.
>>> Tune to 15MHz and adjust (9) and (11) for maximum response.
>>> Mixer sensitivity 5uV and oscillator output 35-90mV.
>>>
>>> -- Adjustment of the FM LO. Signal from an RF generator with
>>> 60 Ohm output impedance injected directly at the mixer (MP1?)
>>> with a loaded signal level <2mV. Set the radio to FM.
>>> - Tune to 88MHz and adjust (A) and (C) for maximum response.
>>> - Tune to 106MHz and adjust (B) and (D) for maximum response,
>>> Noise level is about 5 times kT0. Oscillator output voltage
>>> 75-85mV (at T2's emitter).
>>
>> It is interesting to compare the different approaches Jeroen and I have
>> taken. Although we began with exactly the same source material, we have
>> produced two markedly different ways of saying the same thing.
>
> Well, the important thing is that you agree on the key points.
> Now it just so happens I have a vintage wobbulator (made by Knight
> IIRC) which would be ideal for this job. It hasn't been used for about
> 20 years so it'll probably explode at switch-on, but that's nothing
> unusual around here as my neighbours will attest.

I went back and forth between the text and the schematics to
try and clear up some inaccuracies in the text. Comparing with
the original German text, the G->F translator did an honourable
job, in fact.

I believe you have a VNA. I'd use that instead of a wobbulator.
You won't need the diode detector then. You'll need a high-Z
probe though. You'll also need an oscilloscope to observe the
audio amplifier input (to adjust the discriminator).

On Sun, 22 Dec 2024 14:05:51 +0000, liz@poppyrecords.invalid.invalid
(Liz Tuddenham) wrote:

>Cursitor Doom <cd@notformail.com> wrote:
>
>> On Sun, 22 Dec 2024 12:37:37 +0000, liz@poppyrecords.invalid.invalid
>> (Liz Tuddenham) wrote:
>>
>> >Jeroen Belleman <jeroen@nospam.please> wrote:
>> >
>> >> On 12/21/24 14:57, Cursitor Doom wrote:
>> >> > On Sat, 21 Dec 2024 08:57:51 +0000, liz@poppyrecords.invalid.invalid
>> >> > (Liz Tuddenham) wrote:
>> >> >
>> >> >> Cursitor Doom <cd@notformail.com> wrote:
>> >> >>
>> >> >>> On Sat, 21 Dec 2024 00:05:08 +0100, Jeroen Belleman
>> >> >>> <jeroen@nospam.please> wrote:
>> >> >>>
>> >> >>>> On 12/20/24 22:16, Cursitor Doom wrote:
>> >> >>>>> On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
>> >> >>>>> (Liz Tuddenham) wrote:
>> >> >>>>>
>> >> >>>>>> Cursitor Doom <cd@notformail.com> wrote:
>> >> >>>>>>
>> >> >>>>>>> Do we have any French speakers on the Panel? I have a radio
>> >> >>>>>>> that's badly in need of realignment and the only instructions I
>> >> >>>>>>> can find are a set in French. I can't use Google translate
>> >> >>>>>>> because they've used too many abbreviations in the text and
>> >> >>>>>>> they won't parse any sense.
>> >> >>>>>>
>> >> >>>>>> I'm not a particularly fluent French speaker, but I could
>> >> >>>>>> probably sort out some technical instructions in French If you
>> >> >>>>>> want to send them to me, I'll have a go (you should be able to
>> >> >>>>>> work out my e-mail address).
>> >> >>>>>
>> >> >>>>> Many thanks indeed for your kind offer. I suspect it will
>> >> >>>>> probably require a native French speaker to decypher, but who
>> >> >>>>> knows? :-)
>> >> >>>>
>> >> >>>> I'm not a native French speaker, but I may be able to help anyway.
>> >> >>>> Fire away.
>> >> >>>
>> >> >>> Well that's interesing as I had did think you might respond given some
>> >> >>> of the background you've revealed here in the past. I don't have the
>> >> >>> relevant page here right now, but will make it available tomorrow. It
>> >> >>> is only the one page and only one column of that, so nothing too
>> >> >>> onerous. I did show it to a genuine French chum of mine a few weeks
>> >> >>> ago, but he was stumped by the technical side of it and couldn't
>> >> >>> assist much, unfortunately. So it appears it needs someone who can
>> >> >>> speak French fluently *and* understands the process of radio
>> >> >>> alignment. I kind of guessed that might be you....
>> >> >>
>> >> >>
>> >> >> Many years ago Practical Wireless published an article about the French
>> >> >> 819-line high-definition television service which had been translated
>> >> >>from French by someone who knew nothing about television or radio
>> >> >> terminologyy. It was hilarious nonsense but I eventually managed to
>> >> >> translate it back into French so that I could understand it.
>> >> >>
>> >> >> If you post your text here, we can all have a go at it.
>> >> >
>> >> > Sorry for the delay; took a bit of tracking down but I have it now:
>> >> >
>> >> > https://disk.yandex.com/i/3SiZ6rN_k-fP4w
>> >> >
>> >> > It's only page 1 that needs the translation - and of that, in
>> >> > particular the abbreviated bits. I haven't read French since I was in
>> >> > school about a hundred years ago, so it's all Dutch to me. :-)
>> >>
>> >>
>> >> This was translated from German into French by someone who also
>> >> did not know clearly what it all meant. Not everything makes
>> >> perfect sense.
>> >>
>> >> Also, while it doesn't say so, many of the adjustments interact,
>> >> so you may have to go back and forth a few times. Anyway, here
>> >> goes.
>> >>
>> >> Jeroen Belleman
>> >>
>> >>
>> >> ===============================================================
>> >>
>> >> -- DC current adjustments (for 9V supply)
>> >> - Adjustment of the push-pull audio stage:
>> >> Cut the solder bridge marked -x- in the collector trace of the
>> >> AC188 T11 and insert a current meter. Adjust R410 for 6.5mA.
>> >> Restore the bridge.
>> >> - Adjustment of the IF amplifier:
>> >> Set R515 to obtain 1.35V across T4's emitter resistor R518.
>> >>
>> >> -- Adjustment of the FM-IF stages. The radio should be set to "FM".
>> >> Connect a wobbulator centered on 10.7MHz at MP5 and the diode
>> >> detector shown at ZF VII (I think...) MP6. Detune ZF VIII (a).
>> >> Then tune ZFVII (b) for a symmetrical maximum response.
>> >> - Inject signal at MP3 and tune ZF VI (c) and ZF V (d) for
>> >> symmetrical maximum response.
>> >> - Inject signal on MP2 and adjust ZF IV (e) and ZF III (f) for
>> >> symmetrical maximum response.
>> >> - Inject a weakly coupled signal at the mixer (MP1?) and adjust
>> >> ZF II (g) and ZF I (h) for symmetrical maximum response.
>> >> - Discriminator: Inject signal at MP5, with a level low
>> >> enough that no limiting occurs in the IF strip. Observe the
>> >> signal at MP11 (audio amplifier input) with load impedance 50k.
>> >> Adjust ZF VIII (a) for symmetrical response.
>> >>
>> >> -- Adjustment of the AM IF (460kHz) stages. The radio should be
>> >> set to "PO" (AM, 560-1450kHz). Connect a measurement instrument
>> >> at MP4 (Weakly coupled).
>> >> - Inject a wobbulator signal at MP3 and adjust ZF XIII and ZF XII
>> >> for symmetrical maximum response.
>> >> - Inject signal at MP8 and adjust ZF XI for symmetrical maximum
>> >> response.
>> >> - Inject signal at MP7 and adjust ZF X and ZF IX for symmetrical
>> >> maximum response.
>> >>
>> >> -- Adjustment of local oscillator and AM input. For short and
>> >> medium wave, couple signal into the ferrite rod antenna using
>> >> the frame. For short wave, remove the rod antenna and couple
>> >> signal at the antenna connection through 15pF.
>> >> Tune to 560kHz and adjust (1) and (3) for maximum response.
>> >> Mixer sensitivity 13uV and oscillator output 60-90mV.
>> >> Tune to 1450 kHz and adjust (2) and (4) for maximum response.
>> >> - Set the radio to GO (Long wave, 160-240kHz).
>> >> Tune to 160kHz and adjust (5) and (6) for maximum response.
>> >> Mixer sensitivity 13uV and oscillator output 65-95mV.
>> >> - Set the radio to OC (Short wave, 6.5-15MHz)
>> >> Tune to 6.5MHz and adjust (8) and (10) for maximum response.
>> >> Tune to 15MHz and adjust (9) and (11) for maximum response.
>> >> Mixer sensitivity 5uV and oscillator output 35-90mV.
>> >>
>> >> -- Adjustment of the FM LO. Signal from an RF generator with
>> >> 60 Ohm output impedance injected directly at the mixer (MP1?)
>> >> with a loaded signal level <2mV. Set the radio to FM.
>> >> - Tune to 88MHz and adjust (A) and (C) for maximum response.
>> >> - Tune to 106MHz and adjust (B) and (D) for maximum response,
>> >> Noise level is about 5 times kT0. Oscillator output voltage
>> >> 75-85mV (at T2's emitter).
>> >
>> >It is interesting to compare the different approaches Jeroen and I have
>> >taken. Although we began with exactly the same source material, we have
>> >produced two markedly different ways of saying the same thing.
>>
>> Well, the important thing is that you agree on the key points.
>> Now it just so happens I have a vintage wobbulator (made by Knight
>> IIRC) which would be ideal for this job. It hasn't been used for about
>> 20 years so it'll probably explode at switch-on, but that's nothing
>> unusual around here as my neighbours will attest.
>
>Just to reinforce the point that Jeroen made, the adjustments interact,
>so you will have to hop back and forth until the error becomes
>negligible. As far as I know. nobody has ever found a way around this
>and it takes up a lot of time at the end of a production line.
>
>A piece of equipment, which was a great help when I had that unenviable
>job, was a signal generator with push buttons to rapidly and reliably
>switch between the end-of-band spot frequencies. I still had to wind
>the dial drive from one end to the other each time - the reduction ratio
>was 110:1. (See <https://eddystoneusergroup.org.uk/Data Sheets/EC10 Oct
>1967.pdf>.)

On Sun, 22 Dec 2024 15:52:08 +0100, Jeroen Belleman
<jeroen@nospam.please> wrote:

>On 12/22/24 14:27, Cursitor Doom wrote:
>> On Sun, 22 Dec 2024 12:37:37 +0000, liz@poppyrecords.invalid.invalid
>> (Liz Tuddenham) wrote:
>>
>>> Jeroen Belleman <jeroen@nospam.please> wrote:
>>>
>>>> On 12/21/24 14:57, Cursitor Doom wrote:
>>>>> On Sat, 21 Dec 2024 08:57:51 +0000, liz@poppyrecords.invalid.invalid
>>>>> (Liz Tuddenham) wrote:
>>>>>
>>>>>> Cursitor Doom <cd@notformail.com> wrote:
>>>>>>
>>>>>>> On Sat, 21 Dec 2024 00:05:08 +0100, Jeroen Belleman
>>>>>>> <jeroen@nospam.please> wrote:
>>>>>>>
>>>>>>>> On 12/20/24 22:16, Cursitor Doom wrote:
>>>>>>>>> On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
>>>>>>>>> (Liz Tuddenham) wrote:
>>>>>>>>>
>>>>>>>>>> Cursitor Doom <cd@notformail.com> wrote:
>>>>>>>>>>
>>>>>>>>>>> Do we have any French speakers on the Panel? I have a radio that's
>>>>>>>>>>> badly in need of realignment and the only instructions I can find are
>>>>>>>>>>> a set in French. I can't use Google translate because they've used too
>>>>>>>>>>> many abbreviations in the text and they won't parse any sense.
>>>>>>>>>>
>>>>>>>>>> I'm not a particularly fluent French speaker, but I could probably sort
>>>>>>>>>> out some technical instructions in French If you want to send them to
>>>>>>>>>> me, I'll have a go (you should be able to work out my e-mail address).
>>>>>>>>>
>>>>>>>>> Many thanks indeed for your kind offer. I suspect it will probably
>>>>>>>>> require a native French speaker to decypher, but who knows? :-)
>>>>>>>>
>>>>>>>> I'm not a native French speaker, but I may be able to help anyway.
>>>>>>>> Fire away.
>>>>>>>
>>>>>>> Well that's interesing as I had did think you might respond given some
>>>>>>> of the background you've revealed here in the past. I don't have the
>>>>>>> relevant page here right now, but will make it available tomorrow. It
>>>>>>> is only the one page and only one column of that, so nothing too
>>>>>>> onerous. I did show it to a genuine French chum of mine a few weeks
>>>>>>> ago, but he was stumped by the technical side of it and couldn't
>>>>>>> assist much, unfortunately. So it appears it needs someone who can
>>>>>>> speak French fluently *and* understands the process of radio
>>>>>>> alignment. I kind of guessed that might be you....
>>>>>>
>>>>>>
>>>>>> Many years ago Practical Wireless published an article about the French
>>>>>> 819-line high-definition television service which had been translated
>>>>> >from French by someone who knew nothing about television or radio
>>>>>> terminologyy. It was hilarious nonsense but I eventually managed to
>>>>>> translate it back into French so that I could understand it.
>>>>>>
>>>>>> If you post your text here, we can all have a go at it.
>>>>>
>>>>> Sorry for the delay; took a bit of tracking down but I have it now:
>>>>>
>>>>> https://disk.yandex.com/i/3SiZ6rN_k-fP4w
>>>>>
>>>>> It's only page 1 that needs the translation - and of that, in
>>>>> particular the abbreviated bits. I haven't read French since I was in
>>>>> school about a hundred years ago, so it's all Dutch to me. :-)
>>>>
>>>>
>>>> This was translated from German into French by someone who also
>>>> did not know clearly what it all meant. Not everything makes
>>>> perfect sense.
>>>>
>>>> Also, while it doesn't say so, many of the adjustments interact,
>>>> so you may have to go back and forth a few times. Anyway, here
>>>> goes.
>>>>
>>>> Jeroen Belleman
>>>>
>>>>
>>>> ===============================================================
>>>>
>>>> -- DC current adjustments (for 9V supply)
>>>> - Adjustment of the push-pull audio stage:
>>>> Cut the solder bridge marked -x- in the collector trace of the
>>>> AC188 T11 and insert a current meter. Adjust R410 for 6.5mA.
>>>> Restore the bridge.
>>>> - Adjustment of the IF amplifier:
>>>> Set R515 to obtain 1.35V across T4's emitter resistor R518.
>>>>
>>>> -- Adjustment of the FM-IF stages. The radio should be set to "FM".
>>>> Connect a wobbulator centered on 10.7MHz at MP5 and the diode
>>>> detector shown at ZF VII (I think...) MP6. Detune ZF VIII (a).
>>>> Then tune ZFVII (b) for a symmetrical maximum response.
>>>> - Inject signal at MP3 and tune ZF VI (c) and ZF V (d) for
>>>> symmetrical maximum response.
>>>> - Inject signal on MP2 and adjust ZF IV (e) and ZF III (f) for
>>>> symmetrical maximum response.
>>>> - Inject a weakly coupled signal at the mixer (MP1?) and adjust
>>>> ZF II (g) and ZF I (h) for symmetrical maximum response.
>>>> - Discriminator: Inject signal at MP5, with a level low
>>>> enough that no limiting occurs in the IF strip. Observe the
>>>> signal at MP11 (audio amplifier input) with load impedance 50k.
>>>> Adjust ZF VIII (a) for symmetrical response.
>>>>
>>>> -- Adjustment of the AM IF (460kHz) stages. The radio should be
>>>> set to "PO" (AM, 560-1450kHz). Connect a measurement instrument
>>>> at MP4 (Weakly coupled).
>>>> - Inject a wobbulator signal at MP3 and adjust ZF XIII and ZF XII
>>>> for symmetrical maximum response.
>>>> - Inject signal at MP8 and adjust ZF XI for symmetrical maximum
>>>> response.
>>>> - Inject signal at MP7 and adjust ZF X and ZF IX for symmetrical
>>>> maximum response.
>>>>
>>>> -- Adjustment of local oscillator and AM input. For short and
>>>> medium wave, couple signal into the ferrite rod antenna using
>>>> the frame. For short wave, remove the rod antenna and couple
>>>> signal at the antenna connection through 15pF.
>>>> Tune to 560kHz and adjust (1) and (3) for maximum response.
>>>> Mixer sensitivity 13uV and oscillator output 60-90mV.
>>>> Tune to 1450 kHz and adjust (2) and (4) for maximum response.
>>>> - Set the radio to GO (Long wave, 160-240kHz).
>>>> Tune to 160kHz and adjust (5) and (6) for maximum response.
>>>> Mixer sensitivity 13uV and oscillator output 65-95mV.
>>>> - Set the radio to OC (Short wave, 6.5-15MHz)
>>>> Tune to 6.5MHz and adjust (8) and (10) for maximum response.
>>>> Tune to 15MHz and adjust (9) and (11) for maximum response.
>>>> Mixer sensitivity 5uV and oscillator output 35-90mV.
>>>>
>>>> -- Adjustment of the FM LO. Signal from an RF generator with
>>>> 60 Ohm output impedance injected directly at the mixer (MP1?)
>>>> with a loaded signal level <2mV. Set the radio to FM.
>>>> - Tune to 88MHz and adjust (A) and (C) for maximum response.
>>>> - Tune to 106MHz and adjust (B) and (D) for maximum response,
>>>> Noise level is about 5 times kT0. Oscillator output voltage
>>>> 75-85mV (at T2's emitter).
>>>
>>> It is interesting to compare the different approaches Jeroen and I have
>>> taken. Although we began with exactly the same source material, we have
>>> produced two markedly different ways of saying the same thing.
>>
>> Well, the important thing is that you agree on the key points.
>> Now it just so happens I have a vintage wobbulator (made by Knight
>> IIRC) which would be ideal for this job. It hasn't been used for about
>> 20 years so it'll probably explode at switch-on, but that's nothing
>> unusual around here as my neighbours will attest.
>
>I went back and forth between the text and the schematics to
>try and clear up some inaccuracies in the text. Comparing with
>the original German text, the G->F translator did an honourable
>job, in fact.

On 12/22/2024 8:27 AM, Cursitor Doom wrote:
> On Sun, 22 Dec 2024 12:37:37 +0000, liz@poppyrecords.invalid.invalid
> (Liz Tuddenham) wrote:
>
>> Jeroen Belleman <jeroen@nospam.please> wrote:
>>
>>> On 12/21/24 14:57, Cursitor Doom wrote:
>>>> On Sat, 21 Dec 2024 08:57:51 +0000, liz@poppyrecords.invalid.invalid
>>>> (Liz Tuddenham) wrote:
>>>>
>>>>> Cursitor Doom <cd@notformail.com> wrote:
>>>>>
>>>>>> On Sat, 21 Dec 2024 00:05:08 +0100, Jeroen Belleman
>>>>>> <jeroen@nospam.please> wrote:
>>>>>>
>>>>>>> On 12/20/24 22:16, Cursitor Doom wrote:
>>>>>>>> On Fri, 20 Dec 2024 19:32:14 +0000, liz@poppyrecords.invalid.invalid
>>>>>>>> (Liz Tuddenham) wrote:
>>>>>>>>
>>>>>>>>> Cursitor Doom <cd@notformail.com> wrote:
>>>>>>>>>
>>>>>>>>>> Do we have any French speakers on the Panel? I have a radio that's
>>>>>>>>>> badly in need of realignment and the only instructions I can find are
>>>>>>>>>> a set in French. I can't use Google translate because they've used too
>>>>>>>>>> many abbreviations in the text and they won't parse any sense.
>>>>>>>>>
>>>>>>>>> I'm not a particularly fluent French speaker, but I could probably sort
>>>>>>>>> out some technical instructions in French If you want to send them to
>>>>>>>>> me, I'll have a go (you should be able to work out my e-mail address).
>>>>>>>>
>>>>>>>> Many thanks indeed for your kind offer. I suspect it will probably
>>>>>>>> require a native French speaker to decypher, but who knows? :-)
>>>>>>>
>>>>>>> I'm not a native French speaker, but I may be able to help anyway.
>>>>>>> Fire away.
>>>>>>
>>>>>> Well that's interesing as I had did think you might respond given some
>>>>>> of the background you've revealed here in the past. I don't have the
>>>>>> relevant page here right now, but will make it available tomorrow. It
>>>>>> is only the one page and only one column of that, so nothing too
>>>>>> onerous. I did show it to a genuine French chum of mine a few weeks
>>>>>> ago, but he was stumped by the technical side of it and couldn't
>>>>>> assist much, unfortunately. So it appears it needs someone who can
>>>>>> speak French fluently *and* understands the process of radio
>>>>>> alignment. I kind of guessed that might be you....
>>>>>
>>>>>
>>>>> Many years ago Practical Wireless published an article about the French
>>>>> 819-line high-definition television service which had been translated
>>>> >from French by someone who knew nothing about television or radio
>>>>> terminologyy. It was hilarious nonsense but I eventually managed to
>>>>> translate it back into French so that I could understand it.
>>>>>
>>>>> If you post your text here, we can all have a go at it.
>>>>
>>>> Sorry for the delay; took a bit of tracking down but I have it now:
>>>>
>>>> https://disk.yandex.com/i/3SiZ6rN_k-fP4w
>>>>
>>>> It's only page 1 that needs the translation - and of that, in
>>>> particular the abbreviated bits. I haven't read French since I was in
>>>> school about a hundred years ago, so it's all Dutch to me. :-)
>>>
>>>
>>> This was translated from German into French by someone who also
>>> did not know clearly what it all meant. Not everything makes
>>> perfect sense.
>>>
>>> Also, while it doesn't say so, many of the adjustments interact,
>>> so you may have to go back and forth a few times. Anyway, here
>>> goes.
>>>
>>> Jeroen Belleman
>>>
>>>
>>> ===============================================================
>>>
>>> -- DC current adjustments (for 9V supply)
>>> - Adjustment of the push-pull audio stage:
>>> Cut the solder bridge marked -x- in the collector trace of the
>>> AC188 T11 and insert a current meter. Adjust R410 for 6.5mA.
>>> Restore the bridge.
>>> - Adjustment of the IF amplifier:
>>> Set R515 to obtain 1.35V across T4's emitter resistor R518.
>>>
>>> -- Adjustment of the FM-IF stages. The radio should be set to "FM".
>>> Connect a wobbulator centered on 10.7MHz at MP5 and the diode
>>> detector shown at ZF VII (I think...) MP6. Detune ZF VIII (a).
>>> Then tune ZFVII (b) for a symmetrical maximum response.
>>> - Inject signal at MP3 and tune ZF VI (c) and ZF V (d) for
>>> symmetrical maximum response.
>>> - Inject signal on MP2 and adjust ZF IV (e) and ZF III (f) for
>>> symmetrical maximum response.
>>> - Inject a weakly coupled signal at the mixer (MP1?) and adjust
>>> ZF II (g) and ZF I (h) for symmetrical maximum response.
>>> - Discriminator: Inject signal at MP5, with a level low
>>> enough that no limiting occurs in the IF strip. Observe the
>>> signal at MP11 (audio amplifier input) with load impedance 50k.
>>> Adjust ZF VIII (a) for symmetrical response.
>>>
>>> -- Adjustment of the AM IF (460kHz) stages. The radio should be
>>> set to "PO" (AM, 560-1450kHz). Connect a measurement instrument
>>> at MP4 (Weakly coupled).
>>> - Inject a wobbulator signal at MP3 and adjust ZF XIII and ZF XII
>>> for symmetrical maximum response.
>>> - Inject signal at MP8 and adjust ZF XI for symmetrical maximum
>>> response.
>>> - Inject signal at MP7 and adjust ZF X and ZF IX for symmetrical
>>> maximum response.
>>>
>>> -- Adjustment of local oscillator and AM input. For short and
>>> medium wave, couple signal into the ferrite rod antenna using
>>> the frame. For short wave, remove the rod antenna and couple
>>> signal at the antenna connection through 15pF.
>>> Tune to 560kHz and adjust (1) and (3) for maximum response.
>>> Mixer sensitivity 13uV and oscillator output 60-90mV.
>>> Tune to 1450 kHz and adjust (2) and (4) for maximum response.
>>> - Set the radio to GO (Long wave, 160-240kHz).
>>> Tune to 160kHz and adjust (5) and (6) for maximum response.
>>> Mixer sensitivity 13uV and oscillator output 65-95mV.
>>> - Set the radio to OC (Short wave, 6.5-15MHz)
>>> Tune to 6.5MHz and adjust (8) and (10) for maximum response.
>>> Tune to 15MHz and adjust (9) and (11) for maximum response.
>>> Mixer sensitivity 5uV and oscillator output 35-90mV.
>>>
>>> -- Adjustment of the FM LO. Signal from an RF generator with
>>> 60 Ohm output impedance injected directly at the mixer (MP1?)
>>> with a loaded signal level <2mV. Set the radio to FM.
>>> - Tune to 88MHz and adjust (A) and (C) for maximum response.
>>> - Tune to 106MHz and adjust (B) and (D) for maximum response,
>>> Noise level is about 5 times kT0. Oscillator output voltage
>>> 75-85mV (at T2's emitter).
>>
>> It is interesting to compare the different approaches Jeroen and I have
>> taken. Although we began with exactly the same source material, we have
>> produced two markedly different ways of saying the same thing.
>
> Well, the important thing is that you agree on the key points.
> Now it just so happens I have a vintage wobbulator (made by Knight
> IIRC) which would be ideal for this job. It hasn't been used for about
> 20 years so it'll probably explode at switch-on, but that's nothing
> unusual around here as my neighbours will attest.

Maybe you should first build a dim bulb tester. Among other
things, it would enable you to re-form the power supply caps
it old gear and save an explosion or three. :-)

Many hits on a Google search, here's the first one:
https://antiqueradio.org/dimbulb.htm