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Old 23rd Nov 2020, 3:50 pm   #1
GMB
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Default Info on this socket?

I was going to ask what it is and then I found out.
It is called JS/1/PF and even has an Air Ministry number 10H/4953

It's about 14mm diameter (approx - hard to measure) at the threaded part and the pin is about 3mm diameter.

So where do I go to get a plug to fit it?
And does anyone have any info on it?
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Old 24th Nov 2020, 9:09 pm   #2
Terry295
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Default Re: Info on this socket?

Hi

From your description and the picture I think this may be what I know as an "F & E" (Films & Equipment) connector. I believe that these were originally used on projection equipment for the sound O/P (this may be incorrect but that's what I heard).

I have a number of B40/41 receivers and this connector is used for the RIS I/P and IF O/P. They are not common but can be found if you know what to look for so I hope that attached pics are of assistance.

Regards Terry C (ZL4TC)
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Old 24th Nov 2020, 10:14 pm   #3
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Default Re: Info on this socket?

The snag being that one cannot "look" anywhere these days.

So no idea where the pictures came from?
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Old 24th Nov 2020, 10:23 pm   #4
M0FYA Andy
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Default Re: Info on this socket?

Is it the first type shown in the attached datasheet?

Andy
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Old 24th Nov 2020, 11:21 pm   #5
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Default Re: Info on this socket?

Could you post a non-encrypted version of that PDF please?
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Old 24th Nov 2020, 11:35 pm   #6
trh01uk
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Default Re: Info on this socket?

The PDF file isn't encrypted. Might be a problem with your pdf reader perhaps?

The one that Andy highlights looks very similar to the ones in Terry's photos.

Richard
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Old 24th Nov 2020, 11:45 pm   #7
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Default Re: Info on this socket?

OK, I found something that reads it.
It is encrypted with a rather modern method that most readers cannot process.


And yes, that first plug might be what I am looking for.
Any ideas of a source?

Well maybe, the pin looks a bit thinner than needed

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Old 25th Nov 2020, 12:11 pm   #8
The Philpott
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Default Re: Info on this socket?

I am certain i have at least one of those; it may be a day or so before i can search it out though. (Washing machine has just packed up!)
Dave
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Old 25th Nov 2020, 3:52 pm   #9
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Default Re: Info on this socket?

Oh that would be great. Yes please!
(I could really do with 2 of them )
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Old 26th Nov 2020, 9:42 pm   #10
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Default Re: Info on this socket?

Head out from under sink, have found three off F&E 10H/19698 (males) and also a hefty double-ended female link marked F&E JS-1-DE.

The pins do indeed seem to be 3mm approx, and thread difficult to measure but seems to match your figure.

Knew i had them..

PM me your address and which bits you want GMB, and i will calculate the postage (probably a slim box rather than a jiffy as i don't trust them not to break out.)

Dave
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Old 27th Nov 2020, 1:05 am   #11
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Default Re: Info on this socket?

Which Test Gear or Workshop Equipment is this from, please?
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Old 27th Nov 2020, 10:19 am   #12
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Default Re: Info on this socket?

In my case, I am trying to connect to the Post Office Engineering dept's "Measuring Set R.I. No.1".

Being an accurately calibrated thing I am reluctant to hack it about just because the connectors are almost (but hopefully thanks to Dave, not entirely) unobtainable.
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Old 27th Nov 2020, 12:54 pm   #13
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Default Re: Info on this socket?

I remember that type of connector being used in some of the old commercial test gear that was still being used at Plessey in the early 1970's. I always wondered what it was called.
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Old 29th Nov 2020, 11:19 pm   #14
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Default Re: Info on this socket?

I recall using these connectors (we called them "Small F&Es") in the late 1950s , and what are now known as" U.H.F.s", we used to call "Large F&Es" !

In case anyone else is desperate , I still have a small quantity.


When soldering , beware of those with polythene innards !

Laurie.
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Old 4th Dec 2020, 10:34 am   #15
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Default Re: Info on this socket?

Many thanks to The Philpott who has kindly sent me some examples.

They seem rather nice plugs. I wonder why they were not so popular.
Mind you, I haven't tried soldering them yet - I can see the polythene inner being a problem, just as on the TV coax plugs I guess.

(They are not the same the so-called UHF type commonly used today.)
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Old 4th Dec 2020, 12:52 pm   #16
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Default Re: Info on this socket?

Quote:
Originally Posted by Rileyman View Post
I recall using these connectors (we called them "Small F&Es") in the late 1950s , and what are now known as" U.H.F.s", we used to call "Large F&Es" !

In case anyone else is desperate , I still have a small quantity.


When soldering , beware of those with polythene innards !

Laurie.
Yes IIRC once used for connecting broadcast equipment like monitors at line level before the twist fit BNC plug.
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