[Elecraft] DSP and IF filtering

Mon Sep 1 21:10:09 2003

Don,

Very nice tip and reminder.  Thanks!

Bill=20
K9YEQ
=20
K-2 (#35)=20
=20
=20
-----Original Message-----
From: [email protected] =
[mailto:[email protected]]

Leo,

The DSP for the K2 is done at audio, so a wide IF will still let nearby
interfering signals into the AGC and will desense the receiver.  Using a
narrower IF can avoid that problem.

So if you notice that the receiver sensitivity appears to decrease when =
QRM
is present (S-meter will increase, so use the ears), switching to a =
narrower
filter would be my first course of action.  If you can get additional
improvement by then using the DSP, by all means use it.

73,
Don W3FPR