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Vintage Tape (Audio), Cassette, Wire and Magnetic Disc Recorders and Players Open-reel tape recorders, cassette recorders, 8-track players etc.

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Old 16th Sep 2023, 2:15 pm   #1
DMcMahon
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Default Name The Machine This Part Belongs To

This could be a difficult one.

While looking for a spare part for a reel to reel recorder I found this solid plate, stainless steel I think.

Even though it looks very familiar, I cannot think where it belongs, but am 99% sure it is from one of my many R2Rs.

Hoping someone may be able to offer suggestions that will trigger my memory.

David
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Old 10th Dec 2023, 3:24 pm   #2
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Default Re: Name The Machine This Part Belongs To

Bouncing this just in case anybody who may have missed it first time round may have a suggestion.

David
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Old 10th Dec 2023, 3:28 pm   #3
stevehertz
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Default Re: Name The Machine This Part Belongs To

As an aside, from the photo is doesn't look like stainless steel to me. Also, I can't see why such a plate would be made from such an expensive and difficult to work with material as stainless steel for use on a domestic R2R.
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Old 10th Dec 2023, 3:54 pm   #4
Cruisin Marine
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Default Re: Name The Machine This Part Belongs To

It doesn't look like stainless to me. It does look like a mounting bracket for a CB or PMR set or something.
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Old 10th Dec 2023, 4:09 pm   #5
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Default Re: Name The Machine This Part Belongs To

PCP?

David
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Old 10th Dec 2023, 4:18 pm   #6
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Default Re: Name The Machine This Part Belongs To

Quote:
Originally Posted by Cruisin Marine View Post
It doesn't look like stainless to me. It does look like a mounting bracket for a CB or PMR set or something.
Yes, I think it's something like that.

The material looks like Cadmium-plated steel to me; the localised 'spotty' discolouration being rather characteristic.
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Old 10th Dec 2023, 9:01 pm   #7
Philips210
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Default Re: Name The Machine This Part Belongs To

I also don't think this is stainless steel. It looks like a passivated steel finish. I would have said either zinc or cadmium but I note G6Tanuki's comment on the spotty appearance. Is that only applicable to cadmium passivated steel or can it apply to zinc passivated steel?

The reason I ask is it would be useful to know when trying to identify whether cadmium is present when handling or working on a radio chassis where it's not clear the type of plating used.

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Symon
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Old 10th Dec 2023, 9:15 pm   #8
vidjoman
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Default Re: Name The Machine This Part Belongs To

The small square spot welded onto one side looks like it could be mumetal to give additional magnetic screening to whatever it’s protecting. Probably from a tape deck to prevent induced hum into a hum sensitive part.
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Old 11th Dec 2023, 12:05 am   #9
DMcMahon
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Default Re: Name The Machine This Part Belongs To

What is PCP ?

David
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Old 11th Dec 2023, 12:12 am   #10
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Default Re: Name The Machine This Part Belongs To

Passivated Cadmium Plating.

David
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Old 11th Dec 2023, 10:39 am   #11
DMcMahon
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Default Re: Name The Machine This Part Belongs To

Quote:
Originally Posted by Cruisin Marine View Post
It doesn't look like stainless to me. It does look like a mounting bracket for a CB or PMR set or something.
I do not think it is for mounting a CB or PMR set.

David
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Old 11th Dec 2023, 10:44 am   #12
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Default Re: Name The Machine This Part Belongs To

It looks like a shielding plate that would be fitted over a PCB's print side, possibly an oscillator board if you're right about it being from a reel-to-reel, which would chime with its relatively small size.

The quality and multiple fixing points would point to a more upmarket model.

However, I'm probably wrong!
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Old 11th Dec 2023, 10:46 am   #13
DMcMahon
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Default Re: Name The Machine This Part Belongs To

I originally thought the plate looked similar to some of the plated plates in the Grundig TK 14 - TK 27 series (of which I have many) but am sure the plate is not from any of them.

David
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