Les,
I do sort of remember Cambridge Thermionics. I came across their
name back in the late 60's or early 70's when I first got in the
frequency measurement "business". I think I also remember seeing
their name as a parts supplier in some WW-2 military radio manuals.
Burt
From: "Lester Veenstra" <[email protected]>
Bert:
I wonder if you happen to remember a company called Cambridge
Thermionics. Located in Cambridge MA, they made ceramic slug tuned coil s
but in one corner was an individual with the off air frequency measuring
service. As a duty engineer up the read at WCOP in Lexington, I frequently
would get calls from him to tick a dummy plug in the modulator input patch
(turning the board gain down was too much residual noise), so he could
measure us, and more often, to remove the carrier for a few seconds so you
could measure some one co-channel. He never wanted to talk about how it did
it, and absolute would not accept visitors who might learn his dark trade
secrets.
I had assumed that these days a GPSDO would remove the need for the
monthly "freq service" but I guess not.
I stood my last midwatch at COP and reported to the Boston Army station for
induction into the USN the next morning.
73 Les
Burt I. Weiner Associates
Broadcast Technical Services
Glendale, California U.S.A.
[email protected]
www.biwa.cc
K6OQK
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