[Elecraft] K3 Receiver mush

[Richard Ferch]

Actually it's not the 250 Hz roofing filter that is too narrow, it is the
250 Hz DSP filter setting. If you ignore the label on the roofing filter
and configure the K3 to switch the 250 Hz crystal filter in at the 350 Hz
DSP setting, the combination (350 Hz DSP, 250 Hz roofing filter) works fine
for those situations where there is a very strong signal right next door.
The rest of the time I prefer to operate with a 400-450 Hz DSP bandwidth
and a 500 Hz roofing filter.

73,
Rich VE3KI


N1MGO wrote:

I do lots of rtty contesting.  I have found the 400Hz filter to be
just right for rtty.  The 250 is too narrow.  I then narrow the DSP
filter to 300Hz if needed, with the 400Hz Xtal filter in front.