[Elecraft] K3 receiver noise questionable test results
N1JM
johnn1jm at gmail.com
Fri Dec 18 10:45:08 EST 2009
I went back to factory defaults and set AF gain to low as suggested by
Wayne. Seems better but I will try other combinations. Thanks.
73,
John N1JM
On Fri, Dec 18, 2009 at 8:34 AM, Barry N1EU [via Elecraft]
<ml-node+4187185-2059304645 at n2.nabble.com> wrote:
> That result indicates you have too much RF/IF Gain. You need to apply the
> remedies previously discussed.
>
> 73,
> Barry N1EU
>
>
> N1JM wrote:
> It seems as I move the value of AGC SLP down the noise gets louder. Does
> that sound right?
>
> John N1JM
>
> P.B. Christensen wrote:
>> Back down the value of AGC THR in the menu, turn down RF Gain, turn up
>> your
>> AF Gain and turn off your preamp on 160-20M.
>
> Adding to that...AGC SLP has a profound effect on the AGC compression ratio.
> Higher settings make all signals sound relatively the same. A few posts
> back, I recall seeing comments about how signals on a Yaesu transceiver
> seemed to "pop out." For that to noticeably happen on the K3, AGC SLP will
> need to be set for lower menu values. From the K3 manual:
>
> AGC SLP - (Advanced.) Higher values result in 'flatter' AGC (making signals
> at all amplitudes closer in AF output level)." My AGC SLP setting is on the
> lower end of the range as I actually prefer audio dynamic range rather than
> homogenizing everything on the band.
>
> Aggressive AGC SLP and AGC THR add to a perceived increase in background
> noise and signals that do not "pop out."
>
> Paul, W9AC
>
>
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