Is there any reason why I can't run DFCW using port LPT1 from my laptop?
Both modes run ok from my desktop PC using serial port. All I have done is
make an adapter from 9 pin serial to 25 pin parallel & that is ok using qrss
mode.

If DFCW needs a serial port then running it via a 9 to 25 pin adaptor from a parallel printer port, LPT1, isn't going to work unless you've built a proper parallel to serial adapter....

but it's not sounding at the moment as though you've done that.

Have you just made a lead up?

regards

Nigel

G8PZR