What program are you using to poll the K3? If it's the K3 Utility, please make sure you've selected the correct COM port. There's information in K3 Utility Help to assist in finding the COM port that corresponds to your KUSB. If there is more than one choice in the Port page's COM port selector, try other ones.
There have been defective USB to Serial cables, there have been defective PC USB hubs, and there have been failures in the K3's KIO3. Generally the issue is selecting the wrong COM port or a defective cable. Can you try another cable? If available, try a "real" RS-232 port in preference to any USB to Serial adapter. Has this ever worked for you? Dick, K6KR -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of rfenab...@gmail.com Sent: Monday, January 11, 2010 9:57 PM To: Elecraft Subject: [Elecraft] K3 usb to serial Can anyone guess what I am NOT doing correctly? KUSB (Prolific usb) driver installed in Windows xp pro with SP3 Windows says installed and working correctly. (No matter which usb port I plug the usb to serial cable into. Speed is set to 38400 on the PC and K3 but still just wants to poll the K3 but does not connect. What am I missing here?...apart from having lost the plot long ago...(:-)) 73's Gary Sent via BlackBerryR from Telstra ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html