John, Yep--RF on the keying line. Try putting some ferrite beads on the line near the PC end and it should go away!
73 de Tom, K4NR ----- Original Message ----- From: "John Kjos" <[EMAIL PROTECTED]> To: "DX4WIN" <[email protected]>; "RFI" <[EMAIL PROTECTED]> Sent: Sunday, February 22, 2004 5:07 PM Subject: [Dx4win] Keying problem > Hi, I am using the printer port on my computer for CW keying during > contests. On 20 meters I am having some sort of problem. When I try and send > CW via the computer it locks the radio into transmit without sending > anything, just a carrier. As soon as I pull the cable out of the keying > jack, it stops. I am sure it is a RF problem somehow, as it only does it > with the amp in line running 1KW. 200 watts out of the radio it is fine. Any > suggestions on a remedy? Thanks- John W9RPM
