[Elecraft] K3s AFSK frequencies

[john at kk9a.com]

The optimal band width may depend on how crowded the band is. Wide
filtering may work well for a DXer trying to copy a super weak signal on a
quiet band. I only use RTTY in contests when the bands are packed and I
have had great results using very narrow roofing filters.

John KK9A


from: Dave Hachadorian
Tue Apr 12 23:54:57 EDT 2016

Current thinking is to use a fairly wide filter for RTTY.  The
software filters that are applied in the sound card are much
narrower, about 50 Hz wide.  Lately I've been using the 2.7 KHz
roofing filter, with DSP bandwidth set to about 600 Hz.


Dave Hachadorian, K6LL
Yuma, AZ