[Moon-net] WJST software help please

[Joe Taylor]

Hi Lee, Dave, and all --

> Is there any logic for transmitting CW using SSB Audio vs CW Keying?

CW is not one of the primary WSJT modes.  Since everything else is done 
using audio tones and your radio set to SSB mode, this was *by far* the 
easiest way to implement CW.

In addition, by using audio-generated CW I can shape dots and dashes 
properly (thus minimizing bandwidth) and control their timing 
accurately.  Doing this with a keyed digital line may be possible under 
Windows (including all Windows flavors), but would not be trivial.

> Personally, I'd like to see WSJT transmit CW using a key. This way the 
> rig does not have to be put in split SSB/CW mode for receiving CW 
> signals. I suppose it doesn't matter as I have to use another rig for 
> receiving CW. The DSP-10 does a much better job than the IC746 for 
> reception of CW.

If you want to use WSJT in CW mode and key your radio in the normal way 
for CW, I suggest rectifying the audio tone and using it (through a 
transistor switch) to key a reed relay.  The relay contacts then go to 
your key jack.

> One other question.  What is WSJT actually doing when it tries to decode 
> CW?

Good question!  I wondered that, myself, the last time I fired up WSJT 
in CW mode, and saw garbage appearing in the decoded text window.

There is no CW decoder in WSJT.  I think I just forgot to tell the 
program not to call any decoder.  It must be trying to treat the signal 
as if it were FSK441, or maybe one of the other modes.  ;-)

	-- Joe, K1JT