In addition to the SSB examples several people have posted, the
Hi and Lo Cut controls are quite useful in soundcard digital
modes. For example, when I use my computer for PSK, I scan the
band with the bandwidth set to a low of 300 Hz and a high of
2.6KHz. I have a macro to set this bandwith (IS 1450;BW0230;).
When I start a QSO, I narrow the Hi and Lo Cut controls to
eliminate most of the other signals on my waterfall. The audio
frequency marks on the computer's waterfall make this adjustment
straight forward if a bit fiddly. The resulting bandwidth is
between 50Hz and 150Hz and makes use of the 250Hz crystal filter
in the K3. (Someday I have to reprogram the computer to send the
narrow bandwidth details to the K3.) With this narrow bandwidth
I find it easier to pull weak signals out of the noise floor and
avoid overload from nearby strong signals.
Cheers - Bill, AE6JV
-------------------------------------------------------------------------
Bill Frantz | Airline peanut bag: "Produced | Periwinkle
(408)356-8506 | in a facility that processes | 16345
Englewood Ave
www.pwpconsult.com | peanuts and other nuts." - Duh | Los Gatos,
CA 95032
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