[Boatanchors] National Crystal Question

[Al Klase]

Keith,

Sounds like the IF filter crystal from an early HRO receiver. They're 
about 1 3/8" O.D. x 1 1/4 tall.

Al

Al Klase – N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/

On 1/5/2016 1:56 PM, Keith Densmore wrote:
> I found a small cylinder, perhaps two inches long,  chromed,
>
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>   with the National logo on it. Two prongs on bottom, it looks like a crystal
> perhaps from calibrator. Any idea what set it might belong to. I can send a pix
> if that helps.
> 73, thanks,
> Keith ve3gem/ve3ts
>
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