Posted by
Merv Schweigert on
Dec 04, 2011; 7:53pm
URL: http://elecraft.85.s1.nabble.com/Fw-CQ-WW-DX-Contest-CW-2011-Unofficial-claimed-scores-tp7060148p7060932.html
> Also, in the heat of the contest or DX pile up most reporters do not
> recall how they had their AGC parameters set (threshold, slope, AGC
> decay soft/hard, fast or slow, and fast/slow settings etc. If you can
> let us know your complete set up for AGC parameters, if you are using
> headphones or speakers, the signal strengths, CW or SSB, RX b/w, what
> different settings you tried etc., that will be extremely helpful.
>
AGC DCY = NOR
AGG HLD = 20
AGC PLS = NOR
AGC SLP = 000
AGC THR = 008
AGC F = 200
AGC S = 020
Headphones and speaker, no difference
signals S3-S4 range
CW
all bandwidths, use mostly 400hz and narrower.
Tried AGC DCY = SOFT (have PF1 programmed to switch that in and out fast)
ALL settings of SLP and THR
Turning off the AGC improves the "mush".
Loud signals are no problem at all, the K3 handles loud signals better than
any radio.. its when multiple signals of about S-4 are on this occurs,
more
than two or three, a pile up of same strength signals.
I can understand it may difficult to reproduce unless you have a way to
have
10 signals of the same strength, close to the same freq, and keying, just a
carrier will not reproduce the effect, has to be keyed signals you are
trying
to copy. They turn into a single level buzz of sorts.
One note - If signals are below S9+20 and turning AGC off does not help,
> its probably not a DSP AGC or H/W AGC issue.
>
> Also, make sure to use the AGC Limiter menu setting to hard limit audio
> levels if you use AGC OFF.
>
Never use NR or NB and have the AGC limiter set for no AGC times.
In my rough gestimation it seems that signals in the S3-S4 range need to
not trigger
the AGC as they do, if one could set the THR to higher level? perhaps
it would stop the
problem.
Is it possible to increase the range of SLP and THR to move the point
where S-3 or S-4
signals trigger the AGC?
Thanks much Eric. 73 Merv K9FD/KH6
>
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