Jack's measurements of the K3 AGC on the link listed below are quite
interesting. As my noise level on the low bands is usually at least S3 or
4, his plots indicate that the noise (S3 is approx -90 dBm) is either in
the linear range of the AGC, or just barely in the software AGC range.
Don't we
Steve,
If you attempt to use AGC to change the noise level, you will also be
potentially pushing all the signals down to that level as well (how much
so depends on the amount of AGC slope you have dialed in.
A receiver's sensitivity is measured at the antenna input end, and if I
understand
I experienced this pinched audio problem this weekend. Using the current
beta firmware, I noted severely pinched transmit audio (using the transmit
monitor). It occurred on some bands but not all, and was present sometimes
on only one of the sidebands (i.e., when switching sidebands the audio
I experienced this pinched audio problem this weekend. Using the current
beta firmware, I noted severely pinched transmit audio (using the transmit
monitor). It occurred on some bands but not all, and was present sometimes
on only one of the sidebands (i.e., when switching sidebands the audio
Mike,
I tried hard to reproduce this -- no luck. Must be extremely rare.
Were you using diversity mode and/or SPLIT?
What crystal filter and DSP bandwidths were in effect?
Which controls might you have been moving at the time?
Thanks,
Wayne
N6KR
---
http://www.elecraft.com
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