[Drake] TR-4 Relay Problem

[Al Parker]

Hi Chuck,
    Here's what I saved some time ago from Garey Barrell:
73,
Al, W8UT
New Bern, NC
BoatAnchors appreciated here
http://www.boatanchors.org
http://www.hammarlund.info

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From: "Garey Barrell" <k4oah at mindspring.com>
Subject: Re: [drakelist] TR-4C relay
Date: Wednesday, June 11, 2003 10:16 PM
Hi Al -
Potter & Brumfield R10-E1Y4-V2.5K is the standard relay in all the
T(R)-4 (any) transmitters.

According to Bill Frost, you can replace the earlier 5K ohm coil relay
with this one with no changes.
They're available from both Digi-Key and Mouser for about $15.

01/28/04 Garey adds:
You might want to add to that message.  Some of the early T-4XC's used a
15K
relay too.  That one needs a 1.5k resistor added in series with the coil.
73, Garey - K4OAH
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----- Original Message ----- 
From: "Chuck Kembring" <kembring at epix.net>
To: "Drake Reflector" <drake at mailman.qth.net>
Sent: Tuesday, October 24, 2006 8:03 PM
Subject: [Drake] TR-4 Relay Problem


> Hello.....
> I have taken on a project for a 90 year old (still active) ham and I am
in
> need of some help and a part.
> I was given a TR4 in very dirty condition that does not work. After some
> cleaning (outside the house!) I see first off that the T/R relay has
been
> removed and is missing. After looking at the circuit, I see that it is
the
> plate load of the VOX tube and is connected to the +250 VDC bus. I
imagine
> this device is 2500 Ohms or better.
> I'm hoping that someone will have part information on this relay, a
> possible modern replacement, or perhaps one lying around in the junk box
> which may be available to me to get this repair moving...
> Thanks in advance for any / all help,
> 73,
> Chuck Kembring WB3LGG
> Cochranville, Pa
>