[R-390] Carrier Level Meter Issues

Larry H larry41gm at gmail.com
Sun Feb 27 22:28:27 EST 2022


Hi  Gary,  This is usually caused by lack of gain in the agc amp string or
the agc line loaded down by bad caps.  Check v508, v509, v506, z503, r542,
r549, c542 and c546.

Regards, Larry

On Sun, Feb 27, 2022 at 9:01 AM <gary.biasini at shaw.ca> wrote:

> On my 1967 EAC S/N 4996, I have zeroed the meter as follows:
>
>
>
> I tuned the radio to a dead space, unhooked the antenna and turned the RF
> gain fully counter-clockwise.  I then adjusted R523 to zero the meter.
>
>
>
> However, when I tune to 2 different local (strong) AM stations on the BCB,
> even though I start to hear the audio when the RF gain is at 4.5 and it is
> heard very loudly at 7, the carrier level meter only starts to register
> when
> the RF gain is at 7.5 and at full clockwise, only registers 40 db.
>
>
>
> I would like to troubleshoot this but don't know where to start.  If anyone
> could guide me as to what to check, I would be most grateful.
>
>
>
> Thank you.
>
>
>
> Gary
>
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