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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 10th Oct 2019, 8:50 pm   #1
Sinewave
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Default Can anyone tell me about this please?

I picked this up some time ago, I don't really know enough about it!

Any thoughts? Thanks.
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Old 10th Oct 2019, 9:11 pm   #2
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Default Re: Can anyone tell me about this please?

It was obviously an aerial tuning unit but looks like it has been very much got at and is now a power supply.
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Old 10th Oct 2019, 9:32 pm   #3
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Default Re: Can anyone tell me about this please?

Looks like originally it was a plug in Range B (CAY 47151A):

https://airandspace.si.edu/collectio...-47150-range-n

Lawrence.
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Old 10th Oct 2019, 10:05 pm   #4
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Default Re: Can anyone tell me about this please?

Yes it looks like it's been 're-purposed' and what it says on the back bears no resemblance to what it is now!
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Old 10th Oct 2019, 10:54 pm   #5
ChrisC18Mar
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Default Re: Can anyone tell me about this please?

Putting GP-7 wireless into Google came up with the following:
https://airandspace.si.edu/collectio...-47150-range-n

Looks like yours was once the band-specific component for the GP-7 transmitter, and was stored in the carrying case which is now the outer case of your assembly...
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Old 11th Oct 2019, 5:55 pm   #6
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Default Re: Can anyone tell me about this please?

I'm sure I saw that 'thing' being hawked round a few rallies (Frome, Harwell) in the last year....
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Old 11th Oct 2019, 7:04 pm   #7
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Default Re: Can anyone tell me about this please?

It certainly looked great before it was got at.

Have you opened it up to see if it is a power supply?
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Old 12th Oct 2019, 9:01 am   #8
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Default Re: Can anyone tell me about this please?

Looks like it may have a speaker under the hole top left so I'd guess an amp as well maybe?
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Old 12th Oct 2019, 9:17 am   #9
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Default Re: Can anyone tell me about this please?

Do the bottom right sockets say Tx Rx though?
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Old 12th Oct 2019, 10:04 am   #10
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Default Re: Can anyone tell me about this please?

The 2 jack-sockets next to the 'speaker' do suggest perhaps they're for audio input/output.

I'm really intrigued to see what's inside the box. My thought is that it will contain a PSU built to power some item of WWII-vintage stuff (R1155?).
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Old 12th Oct 2019, 12:52 pm   #11
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Default Re: Can anyone tell me about this please?

Open the box! We are all intrigued.
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Old 12th Oct 2019, 3:28 pm   #12
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Default Re: Can anyone tell me about this please?

Looks like an earphone has been fitted underneath, - top left?

Intriguing!

David.
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Old 17th Oct 2019, 12:22 pm   #13
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Default Re: Can anyone tell me about this please?

I'll open it up later if I get a chance and take some photos and post them here.
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Old 18th Oct 2019, 7:43 pm   #14
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Default Re: Can anyone tell me about this please?

Here you go, some more with the lid off
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Old 18th Oct 2019, 8:11 pm   #15
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Default Re: Can anyone tell me about this please?

Well, it once was a tuning unit but now it's got a cobbled-together power supply in it, complete with a dynamotor.

There should be voltage ratings on the dynamotor. The iron magnetics may just be filter chokes and not transformers.

David
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Old 18th Oct 2019, 8:11 pm   #16
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Default Re: Can anyone tell me about this please?

Last photo shows a small motor inside the unit.
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