[Lowfer] VD in PSK31 on 13555.400

[Ed Phillips]

"Ed

Agree. Same is probably true at 13 MHz.

PSK31 clips along at a good rate so it can take advantage of any short
duration propagation. PSK08 might offer some advantage if
conditions were stable and signals were weak. Think I might try sending
just VD VD VD instead of the longer message that's currently
running to take advantage of any "scatter".

I'm using Spectrum Laboratory's digimode feature to generate an on/off
tone .wav file for PSK08 and PSK31.
The exciter is the tracking generator output from an HP 3586C referenced
to GPS. This feeds a pin diode switched 180 degree phase
shift circuit (23' of rolled up RG-174!) with the switch driven by the
rectified .wav file. It's then further amplified and fed to a dipole
@ 60'. Not very elegant but it seems to work. Will probably replace the
RG-174 with a hybrid at some point.

Jay "

Jay:

	Sounds interesting.  Guess I'll have to learn how to use Spectru m
Laboratory - downloaded it a while back but haven't gone beyond that.

Ed