Thanks Lyle. I tried those things. If it's a cable problem then I must have TWO defective cables, because feeding RS232 to the P3 and connecting the single-headed cable to the K3 also results in no communications to the K3. And yes, I put the K3 in RS232 mode at 38400 baud when I tried that.
-- Carl On Sat, Jul 16, 2016 at 5:52 PM, Lyle Johnson <[email protected]> wrote: > Carl, > > A couple of thoughts. > > 1) Losing communications with the Y cable plugged into the KIO3B but not > having BOTH DE-9 connectors attached to the P3 will result in no > communications. The KIO3B senses the Y cable and routes the USB side > communications to the P3 which then routes signals to the K3. > > 2) Be sure the cable is fully seated into the jack on the KIO3B. The > plastic lock should "click" into place. You can verify this with a gentle > tug on the cable after it is inserted to verify it is fully seated. > > 3) Be sure the P3 is set to 38,400 bps on its serial ports. > > 4) If the cable is fully seated and the P3 is set to 38,400 bps and you > still have the problem, I'd suspect the Y cable being defective. I don;t > know if the schematics for the cable are on the website or supplied with > the cable to assist you in troubleshooting the cable if you so desire, so > it may require a call to support on Monday, or an email directly to them. > > 73, > > Lyle KK7P > > > Maybe the combined wisdom of the group will be able to help before I send >> this to Elecraft support. >> >> I installed the KIO3B upgrade in my K3. The USB interface from PC to K3 >> works but only if you don't plug a cable in the RS232/P3 jack. The RS232 >> connection to the P3 isn't happening... >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]

