I'm trying to spec this part which I believe to be an audio limiter,
but all the semiconductor site that I google for seem to be running
the same package which requires you to pay out the shekels before
even releasing a data sheet.

The device I have is short-cct both ways.

12 WPM Class A wrote:
> I'm trying to spec this part which I believe to be an audio limiter,
> but all the semiconductor site that I google for seem to be running
> the same package which requires you to pay out the shekels before
> even releasing a data sheet.
> 
> The device I have is short-cct both ways.
> 
> 

Have you got the correct part number?  It's not listed on 
http://www.alldatasheet.com/ .

If it's part of an audio limiter is it just two diodes connected 
together?  If it is it will probably test SC, do you have a diode test 
function on your test meter?

Stev eH

"Steve H" 
 
wrote in message news:g4ao72$3rr$1@news.albasani.net...
> 12 WPM Class A wrote:
>> I'm trying to spec this part which I believe to be an audio limiter,
>> but all the semiconductor site that I google for seem to be running
>> the same package which requires you to pay out the shekels before
>> even releasing a data sheet.
>> The device I have is short-cct both ways.
> Have you got the correct part number?  It's not listed on 
> http://www.alldatasheet.com/ .
> If it's part of an audio limiter is it just two diodes connected together? 
> If it is it will probably test SC, do you have a diode test function on 
> your test meter?

Sorry to provide more ammunition for Mrs.Nugatory to pollute the NG,
(by having not given out my full life story with every chapter and verse 
just for
a minor query)
but I'd already tested by 12V supply, 2K7 series resistor and measure
VDC both ways which came out at 0V both times.

Its listed as an obsolete type by all the google sites mentioned above; 
indeed
one of the sites claims to have a stock level of 4000 but the data sheet
isn't forthcoming just for the asking.

(I got a pair of FF63M field telephones at Frome, one works, one doesn't)

I'm relying on the cct diagram at 
http://wedelschmidt.de/images/Photo_2007_12_30_12_0_1_edited.jpg
which is only approximately the same as the broken one; perhaps a production
run of nearly 20 years produced a number of variations.

"12 WPM Class A" <invalid@invalid.invalid> wrote in message 
news:g4apkn$6jh$1@news.albasani.net...
> "Steve H" 
>  
> wrote in message news:g4ao72$3rr$1@news.albasani.net...
>> 12 WPM Class A wrote:
>>> I'm trying to spec this part which I believe to be an audio limiter,
>>> but all the semiconductor site that I google for seem to be running
>>> the same package which requires you to pay out the shekels before
>>> even releasing a data sheet.
>>> The device I have is short-cct both ways.
>> Have you got the correct part number?  It's not listed on 
>> http://www.alldatasheet.com/ .
>> If it's part of an audio limiter is it just two diodes connected 
>> together? If it is it will probably test SC, do you have a diode test 
>> function on your test meter?
>
> Sorry to provide more ammunition for Mrs.Nugatory to pollute the NG,
> (by having not given out my full life story with every chapter and verse 
> just for
> a minor query)
> but I'd already tested by 12V supply, 2K7 series resistor and measure
> VDC both ways which came out at 0V both times.
>
> Its listed as an obsolete type by all the google sites mentioned above; 
> indeed
> one of the sites claims to have a stock level of 4000 but the data sheet
> isn't forthcoming just for the asking.
>
> (I got a pair of FF63M field telephones at Frome, one works, one doesn't)
>
> I'm relying on the cct diagram at 
> http://wedelschmidt.de/images/Photo_2007_12_30_12_0_1_edited.jpg
> which is only approximately the same as the broken one; perhaps a 
> production
> run of nearly 20 years produced a number of variations.


Looking at the circuit diagram the unit should function without the device 
in cricuit. So that should tell you if the s/c diodes are the only fault. It 
would appear as you say to be nothing more than a limiter doide so it should 
be easy to fabricate something from discrete devices to do the job.

73
Jeff

>
>

"Jeff"  wrote in message
news:4868fdf1$0$1349$834e42db@reader.greatnowhere.com...
> Looking at the circuit diagram the unit should function without the device
> in circuit. So that should tell you if the s/c diodes are the only fault.
> It would appear as you say to be nothing more than a limiter diode so it
> should be easy to fabricate something from discrete devices to do the job.

I hope that you're not following the M3OSN school of stating-the-bleeding-
-obvious-in-the-hope-of-gaining-attention, OM?

"12 WPM Class A" <invalid@invalid.invalid> wrote in message 
news:g4apkn$6jh$1@news.albasani.net...
> "Steve H" 
>  
> wrote in message news:g4ao72$3rr$1@news.albasani.net...
>> 12 WPM Class A wrote:
>>> I'm trying to spec this part which I believe to be an audio limiter,
>>> but all the semiconductor site that I google for seem to be running
>>> the same package which requires you to pay out the shekels before
>>> even releasing a data sheet.
>>> The device I have is short-cct both ways.
>> Have you got the correct part number?  It's not listed on 
>> http://www.alldatasheet.com/ .
>> If it's part of an audio limiter is it just two diodes connected 
>> together? If it is it will probably test SC, do you have a diode test 
>> function on your test meter?
>
> Sorry to provide more ammunition for Mrs.Nugatory to pollute the NG,
> (by having not given out my full life story with every chapter and verse 
> just for
> a minor query)
> but I'd already tested by 12V supply, 2K7 series resistor and measure
> VDC both ways which came out at 0V both times.
>
> Its listed as an obsolete type by all the google sites mentioned above; 
> indeed
> one of the sites claims to have a stock level of 4000 but the data sheet
> isn't forthcoming just for the asking.
>
> (I got a pair of FF63M field telephones at Frome, one works, one doesn't)
>
> I'm relying on the cct diagram at 
> http://wedelschmidt.de/images/Photo_2007_12_30_12_0_1_edited.jpg
> which is only approximately the same as the broken one; perhaps a 
> production
> run of nearly 20 years produced a number of variations.

As Jeff said, remove the part and see if the 'phone works. If it does, then 
the part is probably s/c. Your test may have been confounded by the 
earpiece- if it is low Z then it will exhibit a low voltage across it with a 
2k7 series R to the 12V.  Try it again with the earpiece removed or, better 
still, lift one end of the limiter and test it with a meter.

If the part is u/s, a couple of  diodes will do the job.

-- 
73
Brian, G8OSN
www.g8osn.org.uk

"Brian Reay" <see@website.invalid> wrote in message 
news:pL7ak.93978$zs1.4833@newsfe28.ams2...
>
> As Jeff said, remove the part and see if the 'phone works. If it does, 
> then the part is probably s/c. Your test may have been confounded by the 
> earpiece- if it is low Z then it will exhibit a low voltage across it with 
> a 2k7 series R to the 12V.  Try it again with the earpiece removed or, 
> better still, lift one end of the limiter and test it with a meter.
> If the part is u/s, a couple of  diodes will do the job.

And there it is, right on queue, the M3OSN technique of 
stating-the-bleeding-
-obvious-in-the-hope-of-gaining-attention

"12 WPM Class A" <invalid@invalid.invalid> wrote in message 
news:g4b1gb$msl$1@news.albasani.net...
> "Brian Reay" <see@website.invalid> wrote in message 
> news:pL7ak.93978$zs1.4833@newsfe28.ams2...
>>
>> As Jeff said, remove the part and see if the 'phone works. If it does, 
>> then the part is probably s/c. Your test may have been confounded by the 
>> earpiece- if it is low Z then it will exhibit a low voltage across it 
>> with a 2k7 series R to the 12V.  Try it again with the earpiece removed 
>> or, better still, lift one end of the limiter and test it with a meter.
>> If the part is u/s, a couple of  diodes will do the job.
>
> And there it is, right on queue, the M3OSN technique of 
> stating-the-bleeding-
> -obvious-in-the-hope-of-gaining-attention

So obvious you clearly missed it.

"Brian Reay" <see@website.invalid> wrote in message
news:kS7ak.93979$zs1.20447@newsfe28.ams2...
>> And there it is, right on queue, the M3OSN technique of
>> stating-the-bleeding-
>> -obvious-in-the-hope-of-gaining-attention
> So obvious you clearly missed it.

And when your attempts at attention-seeking are thwarted,
you resort to abuse.

The device has been removed from the phone since 10:30ish
this morning in order for me to be able to test it.

But neither the truth nor the facts have bothered you in the
past, so why should you seek then now?

"12 WPM Class A" <invalid@invalid.invalid> wrote in message 
news:g4av5k$ht5$1@news.albasani.net...
> "Jeff"  wrote in message
> news:4868fdf1$0$1349$834e42db@reader.greatnowhere.com...
>> Looking at the circuit diagram the unit should function without the 
>> device
>> in circuit. So that should tell you if the s/c diodes are the only fault.
>> It would appear as you say to be nothing more than a limiter diode so it
>> should be easy to fabricate something from discrete devices to do the 
>> job.
>
> I hope that you're not following the M3OSN school of stating-the-bleeding-
> -obvious-in-the-hope-of-gaining-attention, OM?
>
>

I was trying to be helpful!! I certainly wont be in the future where you are 
concerned.

Please note that you were the first person to be rude in this thread.

Bye
Jeff

"12 WPM Class A" <invalid@invalid.invalid> wrote in message 
news:g4b255$o28$1@news.albasani.net...
> "Brian Reay" <see@website.invalid> wrote in message
> news:kS7ak.93979$zs1.20447@newsfe28.ams2...
>>> And there it is, right on queue, the M3OSN technique of
>>> stating-the-bleeding-
>>> -obvious-in-the-hope-of-gaining-attention
>> So obvious you clearly missed it.
>
> And when your attempts at attention-seeking are thwarted,
> you resort to abuse.
>
> The device has been removed from the phone since 10:30ish
> this morning in order for me to be able to test it.

Not working today then ;-)

If it took from 10:30 to 15:12 to determine if a device consisting of two 
diodes was u/s and/or the cause of your problem may I suggest some training 
my be required.

"Brian Reay" <see@website.invalid> wrote in message 
news:468ak.93980$zs1.5494@newsfe28.ams2...
>
>
> Not working today then ;-)
>
> If it took from 10:30 to 15:12 to determine if a device consisting of two 
> diodes was u/s and/or the cause of your problem may I suggest some 
> training my be required

Indeed Brian.

Perhaps you could direct him to one of the clubs doing the F/L course.

Regards
tox

"Jeff"  wrote in message
news:48690d73$0$1351$834e42db@reader.greatnowhere.com...
> I was trying to be helpful!! I certainly wont be in the future where you
> are concerned.
> Please note that you were the first person to be rude in this thread.

You've had a whole week of being rude and aggressive towards me; you
are hardly in a place to comment.

Your suggestions were so trivial as to be nugatory.

Helpful?

Hardly.

"Brian Reay" <see@website.invalid> wrote in message
news:468ak.93980$zs1.5494@newsfe28.ams2...
>> The device has been removed from the phone since 10:30ish
>> this morning in order for me to be able to test it.
> Not working today then ;-)
> If it took from 10:30 to 15:12 to determine if a device consisting of two
> diodes was u/s and/or the cause of your problem may I suggest some
> training my be required.

And when your attempts at attention-seeking are thwarted,
you resort to abuse.

You have no basis for the statement that you make above other than
your need to want to cause insult; a need that is so deeply ingrained
in your subconscious that you cannot resist it.

I determined this morning at 10:30ish that the device was u/s. Since then,
because I am working on a museum piece,  I wish it to remain as
original as possible so have been trying to locate info and/or
an equivalent replacement part. Sure, a couple of IN4148 or
IN916 back to back would do the job equally, but that is hardly
the point. The device is probably germanium and so I seek
an equivalent to keep the beastie as original as possible. Whether
the diodes are the cause of the fault in the phone is neither here nor
there.


Really, OM when someone as self-important as you seeks to
demean others either by wanting to cause insult or by talking
down to them the only person that you abuse is yourself.

This NG has a long record of you abusing yourself so.

"12 WPM Class A" <invalid@invalid.invalid> wrote in message
news:g4b4vh$u5c$1@news.albasani.net...
>
> I determined this morning at 10:30ish that the device was u/s.

Actually was earlier than that. Was done by at least 0932 the time
of posting of first post in the thread.

12 WPM Class A wrote:

> Its listed as an obsolete type by all the google sites mentioned above; 
> indeed
> one of the sites claims to have a stock level of 4000 but the data sheet
> isn't forthcoming just for the asking.
> 
> (I got a pair of FF63M field telephones at Frome, one works, one doesn't)
> 
> I'm relying on the cct diagram at 
> http://wedelschmidt.de/images/Photo_2007_12_30_12_0_1_edited.jpg
> which is only approximately the same as the broken one; perhaps a production
> run of nearly 20 years produced a number of variations.
> 
> 

I think you have found the many "part finders" on the net, they have a 
database of many suppliers and act as middlemen and never handle the 
goods.  Looking at that schematic you should be able to just replace it 
with a couple of cheap diodes.

looks very much like the toy telephones we had when I was a lad, we used 
the wires in the fence along the boundary between our street and the next.

Stev eH

"12 WPM Class A" <invalid@invalid.invalid> wrote in message 
news:g4b4g9$t1u$1@news.albasani.net...
> "Jeff"  wrote in message
> news:48690d73$0$1351$834e42db@reader.greatnowhere.com...
>> I was trying to be helpful!! I certainly wont be in the future where you
>> are concerned.
>> Please note that you were the first person to be rude in this thread.
>
> You've had a whole week of being rude and aggressive towards me; you
> are hardly in a place to comment.
>
> Your suggestions were so trivial as to be nugatory.
>
> Helpful?
>
> Hardly.
>

Still no reason to be gratuitously rude, which you of course say you never 
are.

Jeff

"Jeff"  wrote in message 
news:48692b45$0$1345$834e42db@reader.greatnowhere.com...
> "12 WPM Class A" <invalid@invalid.invalid> wrote in message 
> news:g4b4g9$t1u$1@news.albasani.net...
>>
>> You've had a whole week of being rude and aggressive towards me; you
>> are hardly in a place to comment.
>
> Still no reason to be gratuitously rude, which you of course say you never 
> are.

I wasn't. I was asserting the right of reply to your own continuing 
rudeness.

"12 WPM Class A" <invalid@invalid.invalid> wrote in message 
news:g4a5es$tt1$1@news.albasani.net...
> I'm trying to spec this part which I believe to be an audio limiter,
> but all the semiconductor site that I google for seem to be running
> the same package which requires you to pay out the shekels before
> even releasing a data sheet.
> The device I have is short-cct both ways.

The handset's two inserts are both open circuit. Replacements will
turn up sometime and give Mrs.Nugatory a field day when they do
or do not!

The set works with the other handset. One good set,
one pup out of a "working pair".

Net result - don't trust any dealers at rallies, especially those
selling FOTBOAL out of the back of a miniature butcher's van!

-----ooooo-----

So, this is going to be an enthusiast's telephone network.

Telephone "F" from the 1930s. This has the sweetest jangley bell
of the lot, and has been rewired inside with modern-ish wire

One spare Tele "F" with most of the insides missing and the original
rubber wiring crumbling away, keep for spares.

One Telephone "L" from the 1950s.

One FF63M from east Germany about 1969.

One FF63M with duff handset and audio limiter for spares.

-----ooooo-----

The FF63M does not have a carbon mike as do the other two, but a dynamic 
with
a 3 transistor pre-amp.

Playing with the "F" brings home that the first readily-available audio amps 
were
the carbon microphones. With just a 3V supply it will quite happily 
howl-round
with a feedback path supplied.

-----ooooo-----

Thanks to those who offered genuine help.

"12 WPM Class A" <invalid@invalid.invalid> wrote in message 
news:g4bfab$ml9$1@news.albasani.net...
>
> The handset's two inserts are both open circuit. Replacements will
> turn up sometime and give Mrs.Nugatory a field day when they do
> or do not!
>
> The set works with the other handset. One good set,
> one pup out of a "working pair".
>
> Net result - don't trust any dealers at rallies, especially those
> selling FOTBOAL out of the back of a miniature butcher's van!

Another example of abuse, from the "maintainer of standards"...

Your Worst Nightmare wrote:

> Perhaps you could direct him to one of the clubs doing the F/L course.

And perhaps he could direct you to a club doing the FL course at the 
same time as you've never managed that level yet!

12 WPM Class A wrote:

> Net result - don't trust any dealers at rallies,

So, you were ripped off by a pikey market trader?  Who do we know that 
fits that description?

"class_a"  wrote in message
news:YcednaRJyuRUFPTVnZ2dnUVZ_tvinZ2d@comcast.com...
> So, you were ripped off by a pikey market trader?  Who do we know that
> fits that description?

Which begs the question as to why all the balding short-arses who
use this NG always such aggressive and abusive individuals?

"Your Worst Nightmare" <trabant owners club@Nicks place.comco> wrote in 
message news:lx8ak.49949$Kb.33481@newsfe29.ams2...
>
> "Brian Reay" <see@website.invalid> wrote in message 
> news:468ak.93980$zs1.5494@newsfe28.ams2...
>>
>>
>> Not working today then ;-)
>>
>> If it took from 10:30 to 15:12 to determine if a device consisting of two 
>> diodes was u/s and/or the cause of your problem may I suggest some 
>> training my be required
>
> Indeed Brian.
>
> Perhaps you could direct him to one of the clubs doing the F/L course.

I've  met instructors from several  clubs in the area, all of whom seemed 
decent chaps. I would feel bad inflicting him on them.

--
73
Brian

"Brian Reay"  wrote in message
news:ZBjak.94019$zs1.53691@newsfe28.ams2...
> "Your Worst Nightmare" <trabant owners club@Nicks place.comco> wrote in
> message news:lx8ak.49949$Kb.33481@newsfe29.ams2...
>> "Brian Reay" <see@website.invalid> wrote in message
>> news:468ak.93980$zs1.5494@newsfe28.ams2...
>>> Not working today then ;-)
>>> If it took from 10:30 to 15:12 to determine if a device consisting of
>>> two diodes was u/s and/or the cause of your problem may I suggest some
>>> training my be required
>> Indeed Brian.
>> Perhaps you could direct him to one of the clubs doing the F/L course.
> I've  met instructors from several  clubs in the area, all of whom seemed
> decent chaps. I would feel bad inflicting him on them.

It is only yourself whom you abuse above, Brian.

"12 WPM Class A" <invalid@invalid.invalid> wrote in message 
news:g4bat4$b06$1@news.albasani.net...
> "Jeff"  wrote in message 
> news:48692b45$0$1345$834e42db@reader.greatnowhere.com...
>> "12 WPM Class A" <invalid@invalid.invalid> wrote in message 
>> news:g4b4g9$t1u$1@news.albasani.net...
>>>
>>> You've had a whole week of being rude and aggressive towards me; you
>>> are hardly in a place to comment.
>>
>> Still no reason to be gratuitously rude, which you of course say you 
>> never are.
>
> I wasn't. I was asserting the right of reply to your own continuing 
> rudeness.
>

What continuing rudeness?  In this thread I offered help only to be replied 
to in a gratuitously rude manner, and in the thread last week I merely 
posted an opposite opinion to you only to have you shouting "WRONG!" at me 
straight away in a gratuitously rude manner.

Oh! and by the way I only posted replies to you last week in the thread 'Gas 
Company piping...' for 2 days, the 26th and 27th, and none of them were rude 
or aggressive, so your allegation of a "whole week of being rude and 
aggressive" towards  you is false.


73
Jeff

12 WPM Class A wrote:

> "class_a"  wrote in message
> news:YcednaRJyuRUFPTVnZ2dnUVZ_tvinZ2d@comcast.com...
> 
>>So, you were ripped off by a pikey market trader?  Who do we know that
>>fits that description?
> 
> 
> Which begs the question as to why all the balding short-arses who
> use this NG always such aggressive and abusive individuals?

Just how tall are you?

Dave

"Jeff"  wrote in message 
news:4869e300$0$1351$834e42db@reader.greatnowhere.com...
> What continuing rudeness?  In this thread I offered help only to be 
> replied to in a gratuitously rude manner, and in the thread last week I 
> merely posted an opposite opinion to you only to have you shouting 
> "WRONG!" at me straight away in a gratuitously rude manner.
> Oh! and by the way I only posted replies to you last week in the thread 
> 'Gas Company piping...' for 2 days, the 26th and 27th, and none of them 
> were rude or aggressive, so your allegation of a "whole week of being rude 
> and aggressive" towards  you is false.

Even if it were true, your tirade above is a hotbed of gratuitous rudeness

"Dave"  wrote in message 
news:TIGdnSRdYNzmPvfVnZ2dnUVZ8vmdnZ2d@bt.com...
> 12 WPM Class A wrote:
>> "class_a"  wrote in message
>> news:YcednaRJyuRUFPTVnZ2dnUVZ_tvinZ2d@comcast.com...
>>>So, you were ripped off by a pikey market trader?  Who do we know that
>>>fits that description?
>> Which begs the question as to why all the balding short-arses who
>> use this NG always such aggressive and abusive individuals?
> Just how tall are you?

Tall enough to be able to look down on those of you who, when challenged in
debate, resort to threatening the corrupt use of those members of your 
spawnery
who had been adjudged sufficiently stupid to be recruited into the ploddery.