Posted by
Mike Scott-7 on
Oct 23, 2010; 7:30pm
URL: http://elecraft.85.s1.nabble.com/K3-Sub-RF-gain-tp5659334p5666217.html
I followed the procedure Markus suggested with no change to my K3 RF gain
tracking between main and sub Rx.
I have been listening through the 2.7 KHz stock filter in both receivers
with identical PRE and ATT and both filter gains set to 0 and identical IF
filter bandwidth settings and both receivers sharing the main antenna. I
have SQ MAIN = 0; SQ SUB = 0, SUB AF = nor. The offsets are matched on both
filters and set properly.
Still full CCW on the sub is about 12:00 O'clock on the main.
At full RF gain both are about equal. Strong signals are still copyable on
the sub Rx with full off RF gain, the main is dead when RF gain is minimum.
So I tried an experiment, set main IF Filter (stock filter) to a maximum of
+8 dB gain leaving the sub at 0. I still have more gain on the sub Rx than
the main at low RF gain settings. At high gain settings, now the main is
louder than the sub. So back to zero on the filter gain and very different
gain tracking between the receivers.
Audio gain perfectly tracks by the way.
My K3 behavior is as if Wayne were reading every other RF-Sub gain control
impulse and every one on Main.
I received a few direct emails from other K3 users and theirs act just like
mine. Markus' K3 is now the only one I have heard of that is acting like
expectations.
AE6WA
Mike Scott
Tarzana, CA
>>Markus said: Problem solved: At identical settings (PRE, ATT, RF/AF
Gain), main and
sub signal lelvels are now fully identical.
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