Message-ID: <003c01c215ff$37c200a0$2d2af7c2@a7j7r2>
From: "John Rabson" <word.factory@zetnet.co.uk>
To: rsgb_lf_group@blacksheep.org
References: <5.1.0.14.0.20020617121621.00ac5770@gemini.herts.ac.uk>
Subject: LF: Re: Old LF D/F Receiver
Date: Mon, 17 Jun 2002 14:02:16 +0100
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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" <j.r.moritz@herts.ac.uk>
To: <rsgb_lf_group@blacksheep.org>; <lowfer@mailman.qth.net>
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
>
>
>