Pile-up Mush

[Mike Harris]

G'day,

Any progress or further insights into the reported low level CW pile-up
mush?

Regards,

Mike VP8NO
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[Mike Harris]

Thanks for that Doc,

I was particularly interested in the HAGC time constant experiment.
Apologies for not making that clear.

Regards,

Mike VP8NO

On 07/02/2012 16:21, D. R. Evans wrote:

> Mike Harris said the following at 02/07/2012 12:03 PM :
>> G'day,
>>
>> Any progress or further insights into the reported low level CW pile-up
>> mush?
>>
>
> Here is what I do (this was originally a suggestion I received privately
> from K6LL):
>
> ----
>
> Another approach, which I haven't really tested under severe
> pileup conditions, is the following:
> AF GAIN = HIGH (to increase overall post-agc gain)
> Front panel AGC = FAST
> AGC DCY = SOFT
> AGC HLD = 0.20
> AGC PLS = NOR
> AGC SLP = 000 (steepest)
> AGC THR = 008 (highest)
> AGC - F = 200 (fastest)
> AGC - S = 020
>
> ----
>
> The one downside to this is that loud signals are too loud. I need to fix
> that before ARRL DX CW. I'm sure that tweaking one of the settings will
> solve that problem. But, at least here, the above settings solved the
> mushiness problem.
>
>    73 -- Doc  N7DR
>

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[Bill W4ZV]

Mike Harris wrote

Thanks for that Doc

> Here is what I do (this was originally a suggestion I received privately
> from K6LL):

> Front panel AGC = FAST
> AGC DCY = SOFT
> AGC HLD = 0.20

It doesn't matter where AGC HLD is set when using AGC-F.  It only functions with AGC-S per the manual:

"AGC HLD 0.00 SLOW AGC “hold” time. Specifies the number of seconds that the SLOW AGC
level is held after the signal drops. This can be used to reduce IMD caused by
traditional AGC, and is especially useful in “pileup” conditions, in some cases
making it unnecessary to turn AGC off. Also see AGC DCY, above."

73,  Bill