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Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment.

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Old 3rd Jan 2017, 11:56 am   #1
M0FYA Andy
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Default Plug Type 135

Has anyone come across this Air Ministry coaxial Plug Type 135, 10H/11724?

I have a couple of examples, but have no idea what type of socket it plugs into, or what equipment used it.

The very unusual thing is that the centre pin isn't circular but has the sides flattened, so essentially rectangular.

Any ideas, please?

Many thanks,

Andy
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Old 3rd Jan 2017, 12:54 pm   #2
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Default Re: Plug Type 135

That's a new one to me. I thought I had met most kinds of connectors by now but not one of those!
Alan.
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Old 3rd Jan 2017, 2:40 pm   #3
M0FYA Andy
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Default Re: Plug Type 135

I've been puzzling what the logic of a non-circular pin might be, there must have been a good reason to depart from standard practice, but it has me stumped.

I don't like an unsolved mystery!

Andy
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Old 3rd Jan 2017, 3:10 pm   #4
ms660
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Default Re: Plug Type 135

For what it's worth Andy, I've Googled high and low, nowt yet.

Lawrence.
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Old 3rd Jan 2017, 5:18 pm   #5
M0FYA Andy
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Default Re: Plug Type 135

Thanks Lawrence, it's certainly an odd one!

The locking ring is the correct size to fit the klystron output on the H2S indicator unit - the mating connector is made of unobtainium, so I'm wondering whether to modify (aka bodge) a Plug 135.

But Sod's Law guarantees that as soon as I do I'll discover that it is vital for some other purpose............

I don't approve of modifying things which I assume aren't made any more, as a matter of principle.

Andy
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Old 3rd Jan 2017, 5:56 pm   #6
Biggles
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Default Re: Plug Type 135

Have you tried the Royal Signals Museum Blandford? If they don't know about it no one will.
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Old 3rd Jan 2017, 5:57 pm   #7
ms660
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Default Re: Plug Type 135

Maybe hang on to that plug as original, would anyone on VMARS know?

Lawrence.
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Old 3rd Jan 2017, 6:08 pm   #8
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Default Re: Plug Type 135

Bottom right of this PDF shows a socket type 135 with AM ref which I assume is for the socket only....Might not be relevant at all but posted it up anyways:

http://www.rnmuseumradarandcommunica...org.uk/610.pdf

Lawrence.
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Old 3rd Jan 2017, 6:34 pm   #9
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Default Re: Plug Type 135

With that square profile to the centre pin, is it possible that it's not a plug but something like a Bowden cable? I'm thinking of the ones used on ARC-5 Command receivers, I think some of them had right-angled drives.

73

Roger
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Old 3rd Jan 2017, 7:05 pm   #10
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Default Re: Plug Type 135

Quote:
With that square profile to the centre pin, is it possible that it's not a plug but something like a Bowden cable?
To confirm this, does the middle pin turn?
 
Old 3rd Jan 2017, 8:13 pm   #11
rovernut
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Default Re: Plug Type 135

Hi

It is an aerial plug made by GEC (GEC Drawing number is GEC 86790)

refernce souce is Standardization of Plugs and Sockets (Preliminary version dated November 1942)

Cannot find details of the matching socket

Cheers
Richard
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Old 3rd Jan 2017, 8:47 pm   #12
M0FYA Andy
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Default Re: Plug Type 135

Thanks for the interest, folks!

Lawrence, the picture shows a connector labelled 10H/135, which is a completely different animal to a Plug Type 135. It is really is an intriguing picture, though, a mixture of Admiralty Pattern and AM equipment with all connectors marked up as Air Ministry types - I must give that diagram a good studying! The Power Unit Type 114 is the one for the T1154/R1155, so using Jones Connectors.

Roger, the connector is definitely a coax electrical type, nothing to do with Bowden cables. I'll take a picture of it in pieces tomorrow.

Richard, most interesting!

Andy
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Old 3rd Jan 2017, 8:57 pm   #13
M0FYA Andy
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Default Re: Plug Type 135

I just had a further look at the picture linked to by Lawrence, and had a 'Eureka moment', the Transmitter Type 8D is of course the Admiralty designation for the AM T1154 transmitter.
No help with the elusive coax connector, but a most interesting drawing, thanks Lawrence!

Andy
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