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Autocorrect is frequency the culprit when it happens to me. You’d think that the software could ?remember a simple rule.?

Steve Wedge, W1ES

Time flies like an arrow. Fruit flies like a banana.

Sent from for iOS

On Sun, Apr 27, 2025 at 20:45, n4buq < n4buq@...> wrote:

"(bless its heart)" not "(bless it's heart)". Ugh - I hate it when I do that wrong and don't notice the mistake until I get the message back from the server.

Barry - N4BUQ

> Like other older things, my TR-4 (bless it's heart) is very hard of hearing on
> the upper bands. Signals and noise are quite strong on 80M and 40M but,
> starting with 20M, it becomes increasingly deaf to the point that on 10M, I
> have to turn the AF gain up almost fully open and, on 10M, the calibrator
> barely moves the S-Meter. On transmit, the problem is similar - not nearly as
> much output on 15 and 10 as the other bands so I suspect something common to RX
> and TX.
>
> The crystal oscillators are working just fine - strong enough output on the
> bands that use them and I've performed the alignment on the receiver. When
> trying to peak T1 (10M transformer), the S-Meter is virtually useless as an
> indicator as it barely moves off of "1" and I'm pretty sure it shouldn't be
> that way.
>
> Using my HP-410C, I've monitored the voltage at V7's control grid and the
> voltage consistently drops from lower bands to higher bands as I sort of
> expected it would. Should I be looking to V7 as the probable problem point or
> are there perhaps other circuits that are worth checking? I suspected this
> might be an AGC problem but not sure.
>
> Any pointers are welcome.
>
> Thanks,
> Barry - N4BUQ
>
>
>