Odd problem on 160m

[WN3R, Dick]

I put up a new 160m dipole and SSB signals sound like something is pumping
with AGC in the slow mode.  SSB Stations sound much better with fast AGC.  I
have a Dunstar 600 but since I am using the aux ant jack it's not in the
receive circuit.

Perhaps I should reconfigure to add the Dunstar.  BTW, when listening on the
K9AY loop, signals sounds much better (no pumping).

Any ideas?

73, Dick, WN3R


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[Don Wilhelm-4]

Dick,

What firmware level are you using?  There have been some AGC
improvements lately.
Also, try reducing the slope setting (CONFIG: AGC SLP) to the point
where weaker signals produce slightly weaker audio than a strong signal.

The dipole has more gain than the K9AY loop, so you may need to add
attenuation when the dipole is selected.

73,
Don W3FPR

WN3R, Dick wrote:

> I put up a new 160m dipole and SSB signals sound like something is pumping
> with AGC in the slow mode.  SSB Stations sound much better with fast AGC.  I
> have a Dunstar 600 but since I am using the aux ant jack it's not in the
> receive circuit.
>
> Perhaps I should reconfigure to add the Dunstar.  BTW, when listening on the
> K9AY loop, signals sounds much better (no pumping).
>
> Any ideas?
>
> 73, Dick, WN3R
>  
>

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