Due to a shortage of serial ports, I use LPT1 to key CW in DX4WIN. This works fine for CW, but when operating in PSK31 mode, the LPT keyed line does not seem to operate. I have gone into the PSK Tx preference window and checked the "use CW control" - but the LPT CW line does not work from PSK. (the frustrating fact is that PSK keying _does_ work under exactly the same settings from the COM port - but my com ports are dedicated to other functions).
Am I doing something wrong here ? -larry K8UT