[Elecraft] K3 RX AGC right after a transmission

Arie Kleingeld PA3A pa3a at xs4all.nl
Sun Nov 30 14:58:11 EST 2008


During the CQWW CW we found that RIGHT AFTER a transmission the RX AGC
was STILL busy doing its job and getting back to a lower level (s-meter
dropping from about s9 to the band noise level)
(AGC was at slow).
 
We SUSPECT that the AGC was still at the level from BEFORE the
transmission. So working a strong station gives a problem if the next
one is weak, you'll miss the first letters of the call. We're not sure
about the cause but we encoutered this problem quite often.
It would be better that after a transmission the RX would start at band
noise level and that there is no legacy whatsoever.
 
Anyway, the work around was setting the AGC to fast.
 
 
Did anyone else experience this? Is this a known problem?
 
Setting agc: threshold 5, the AGC ramp-up at 12, the fall-off setting at
default value (20)
SW: latest Beta.
K3 # 1255
 
 
 
73
Arie PA3A
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