[Elecraft] Subject: Data mode and filters

[Edward R Cole]

To run WSJT modes wider than the K3 DSP permits (4-KHz) you can take 
the 1st IF output to a SDR like the LP-Pan which can process 400-KHz 
baseband.  Of course the highest bw soundcards run 192-KHz so that is 
another restriction.

I run MAP65 which can process 90-KHz of JT65 if sufficient bw is 
available.  Just about any SDR can convert the 8.215 MHz 1st IF of 
the K3 to provide this.  I use a emu0202 s/c to process the IQ 
baseband from the LP-Pan (as an example).

If you are running a KX3 it offers baseband IQ directly (not sure 
what the bw is as I have not tried my KX3 for WSJT).

One caveat: there seems to be two WSJT in use:  those that run JT65 
on HF and those who run JT65 on VHF+ (mainly for eme and ms).  Some 
of the modes are not compatible and will not decode signals generated 
by the other "flavor" of WSJT.  Specifically JT65-HF is not read by JT-65A.

I run WSJT only on 6m and higher bands using WSJT10 from Joe Taylor 
(K1JT) who is the creator of WSJT.

73, Ed - KL7UW
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