[Dx4win] Rig Control and PSK

[Jay Chamberlain]

Trying to operate PSK with my IC-7300 and DX4WIN.

I've got the USB setup and working on port 20 and I can read the freq into
DX4WIN V-8.

When I open the PSK window and do an Alt-S to set TX keying I get an
exception when I try to set keying to Port 20.

The 7300 work wonderfully using WSJT-x off of port 20 no problems. Both
control and keying works fine.

Why not with DX4WIN.

NS4Jay