Would it help to have the pinouts for the valves? If so, send me a list of
types and I will see what I can do.
73 de G3PAI,
John Rabson
----- Original Message -----
From: "James Moritz" <[email protected]>
To: <[email protected]>; <[email protected]>
Sent: Monday, June 17, 2002 12:44 PM
Subject: LF: Old LF D/F Receiver
Dear LF Group, Lowfers
I recently bought a WWII vintage LF and MF receiver, which according to
the
label was "part of aircraft direction finder DZ-1", type CRV-46123,
apparently made by RCA. Does anyone have any info on this RX?
It covers 15kHz to 1.5MHz in 6 bands, with a gap from 70kHz to 100kHz, so
I
imagine the IF is 85kHz. It has a 5 gang tuning capacitor, with separate
input stages for loop and wire antennas, and facilities to select either
or
both antennas for non-directional, directional, or "unilateral" reception,
with various gain and phase adjustments. The audio stages appear to have
tuned transformers to improve selectivity. The valves are glass types,
mainly on 6 pin bases. The tuning dial has main and vernier scales giving
0-1000 divisions, and there is a calibration chart on the front panel.
It is simple enough to get working without a manual, but I would be
interested if anyone knows more about it.
Cheers, Jim Moritz
73 de M0BMU
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