[R-390] R-725 AGC quits working after 1 hr.

[David Wise]

Jordan,

"film caps" plural?  Do you mean that you did the partial-mitigation for moment of silence mod that uses one cap for LONG and another cap for MED?

If I were to do it again, I would do Charles Steinmetz's moment of silence mod, placing the caps behind the front panel, and abandon the original C551 in place.  Once you've committed to removing the panel, you can also illuminate the frequency readout with LEDs, and install Jan Skirrow's universal carrier meter circuit if you don't feel like doing mine and Gary Biasini's.

Dave Wise

________________________________
From: r-390-bounces at mailman.qth.net <r-390-bounces at mailman.qth.net> on behalf of Geoff Brozny via R-390 <r-390 at mailman.qth.net>
Sent: Saturday, November 9, 2024 10:22 AM
To: Larry Haney <larry41gm2 at gmail.com>
Cc: r-390 at mailman.qth.net <r-390 at mailman.qth.net>
Subject: Re: [R-390] R-725 AGC quits working after 1 hr.

On 11/9/2024 1:09 PM, Larry Haney wrote:
> Geoff,  the minimum voltage for that cap is a good quality 250 vdc or
> more (200 vdc on the plate of the 'time constant' tube).  You might find
> one 2mfd cap that will work.
>
> Regards, Larry
>

Thanks Larry, I appreciate it. Hopefully I can get it back up and
running this next week.

Thanks,
Geoff
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