[Elecraft] K3 hardware AGC experiment shows promise (& KE7X config)

[Peter Wollan]

Fred's configuration struck me as quite surprising.  With DSP at
5-700, his K3 would be using the 1000 kHz roofing filter, so there
would be a substantial frequency range blocked only by the DSP.  And
ATT on -- why would this be attractive?  I'd think to hear weak
signals close together, you'd turn off ATT, turn up RF gain, and
squeeze down to a narrow roofing filter.  Wouldn't that make the
signals sharper and more legible?

I wonder if this choice of operating settings is the reason not
everyone hears the mushy effect.

     Peter W0LLN


On Mon, Dec 5, 2011 at 7:09 AM, Cady, Fred <fcady at ece.montana.edu> wrote:

> When operating, ATT is ALWAYS ON. I don't think I ever took it off
> except maybe when 15 was dead. PRE never on.
>

> I have 250, 400, 1000 and 2.7 kHz filters.
>
> DSP _usually_ in the 500 - 700 range, sometimes a little wider,
> sometimes a little narrower. I don't think I ever went below 300 Hz.