[Dx4win] Radio selection control problems in 7.02.15

[Randy Farmer]

I use a Top Ten Devices DX Doubler box to control two radios in my 
station. It gets its control for radio selection via pin 14 of the 
LPT port. When I first installed 7.02 I found that the radio 
selection function logic was upside down. Radio 2 would be selected 
when Radio 1 was selected in the DX4WIN control, and vice versa.

With the added WinKey support in 7.02, I was planning to use an 
external WinKey for QSK keying, so I had set the "Interface" value on 
the CW tab in the Preferences setup to None. When I set it back to 
LPT1, the logic reversed, and the radio switching functioned 
normally. I left it set to LPT1 and had no further problem.

I am now in the process of setting up my new microHAM microKEYER, and 
per the setup instructions for that device, I set the Interface to 
COM5, the port controlling Radio 1, and configured it for PTT control 
on the RTS line. The microKEYER requires using PTT control via the 
COM port to make its switching logic work properly in various modes. 
The LPT radio select bit was again backwards!

After some fooling around with various settings, it is apparent 
there's a bug in the DX4WIN control logic that makes the sense of the 
radio select bit correct if and only if the LPT port is also selected 
as the CW and PTT interface. Any other setting reverses the control 
bit logic. This is not good, since it means I can't make the 
microKEYER control the PTT properly for PSK (and probably voice 
message playback).

This bug really needs to be addressed. I don't know if there are any 
updates afoot,  but if so a fix for this one needs to be put in any 
new release.

73...
Randy W8FN