[hpsdr] Ancient device.

[Terry Fox]

It sounds like a microwave diode  See pix here:
https://www.ebay.com/p/679091999?iid=133017830790&chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=133017830790&targetid=885491683625&device=c&mktype=pla&googleloc=9010496&poi=&campaignid=6469981107&mkgroupid=91562449160&rlsatarget=aud-622524042438:pla-885491683625&abcId=1141176&merchantid=111834767&gclid=Cj0KCQjw-r71BRDuARIsAB7i_QMnNmBmXDwta0j9_YpYGGLWsrx2R0snqAyHJYInWV1PKxZ5ogzT-SAaAqXLEALw_wcB

THey were still used in the 1970s for microwave receivers.  I worked at the 
local CBS affiliate in Washington D.C. and became VERY familiar with 
replacing them in our 2GHz news gathering receivers under the tower, after 
lightning storms blew them out.  The receivers used them in the mixer, and 
IIRC, they came in a matched pair, one of each polarity, in metalized 
envelopes.  I may still have a pair of them here.  Manufactured by Microwave 
Associates, I believe.
Terry, N4TLF


-----Original Message----- 
From: Chris Smith
Sent: Monday, May 04, 2020 5:39 AM
To: hpsdr at lists.openhpsdr.org
Subject: [hpsdr] Ancient device.

***** High Performance Software Defined Radio Discussion List *****

Hi

I know this is off topic as it is an enquiry about (historic) electronic 
components, but ...

Many years ago, before my junk box disappeared during one of my many house 
moves, I had in that junk box a small device marked (I think) Westcotector. 
This was, I believe, an early example of an encapsulated semiconductor 
diode. It was about .5 to .75 inches long with metal ends and a flange on 
the, I assume, anode end.

Google has failed me on this occasion.

Does anyone have any info on such a device? It probably came out of WW2 
surplus equipment which was readily available in the late 1940s, '50s and 
early ‘60s.

Thanks in advance and apologies if this is so far off topic it needs to be 
removed.

Cheers & 73

Chris G4NUX


Chris Smith
chris at wealdencottage.co.uk



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