[MRCA] RT-524 Parts

[Tim]

That loud whine in the audio is a classic transmission signature of a
VRC-46 (RT-524).  Mostly from the blower.
I'm sure that was taught in the old Soviet REK (Radio Electronic Kombat)
school!  ;o)
Tim
N6CC


On Tue, Jul 9, 2013 at 1:11 PM, Radio Station KW1I <kw1i at earthlink.net>wrote:

> **
> Thanks for all the responses. Finally got back to troubleshooting some
> more before I acquired any replacement parts,
>
> Found the problem to be the final tube.  Should have recognized the tube
> fault earlier when I measured a positive voltage for grid bias when in
> transmit mode.  Probably an interelectrode short.
>
> With the tube replaced the radio is transmitting now and can be used, but
> there is a loud whine in the transmit audio.  I have heard this whine
> before in other RT-524's, but never this strong.
>
> Anyone have any experience with this symptom?
>
> Thanks,
>
> Dale
> KW1I
>
> ----- Original Message -----
> *From:* Radio Station KW1I <kw1i at earthlink.net>
> *To:* mrca at mailman.qth.net
> *Sent:* Sunday, April 21, 2013 2:12 PM
> *Subject:* RT-524 Parts
>
> Currently repairing a RT-524 (basic variant) for a military vehicle club
> member.  Nee the power supply module and the diode sub-assy.  Let me know
> what you have or where you suggest I go to find what I am looking for.
>
> Thanks,
>
> Dale
> KW1I
>
>
>
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