Exactly, working one day with WSJT-X, next day, not. > On Nov 18, 2021, at 5:10 PM, Don Wilhelm <d...@w3fpr.com> wrote: > > Matt, > > I Forgot to mention that to Bill. The special cable does not have to be very > long, but it must be present. Only pins 2, 3 and 5 should connect to the > RS232 connector on the USB to serial adapter. Failure to follow this will > cause several "strange happenings" with the K2. The subject line said it > "quit working", so I assumed it had worked just before it quit. > > 73, > Don W3FPR > > On 11/18/2021 4:14 PM, Matt Maguire wrote: >> Don’t forget, you can’t plug in a USB adapter directly into a K2, as the >> wiring is not standard RS232C. You need to make up a special adapter as >> described in the manual. Probably you know this already, but just something >> else to check. >> >> 73, Matt VK2RQ >> >> On Fri, 5 Nov 2021 at 06:31, Bill Coleman <aa...@arrl.net> wrote: >> >>> About 10 days ago, I was having trouble with the K2/100, as it was no >>> longer talking to WSJT-X correctly. I could get the audio running, but it >>> would never contact the radio. >>> the man eis >>> Trying to set up for CQ WW Phone, I had the same trouble with N1MM. >>> >>> Tried to use the PORT TEST feature by going to the SEC menu, selecting >>> PORT, going into EDIT, and pressing the DISPLAY button. It would say TEST, >>> but I’d see no characters transmitted. >>> >>> Since I use USB serial adapters, I tried two of them, to no avail. Can’t >>> get a peep out of the K2/100. >>> >>> Opening up the rig and digging out the scope, if I send characters on the >>> serial port, I see pulse trains on KPA100 U4 - the MAX1406 chip - pin 11 >>> (R3OUT). So, it would appear that characters are reaching the main CPU. >>> >>> If I put the scope probe on pin 12 (T2IN), it remains locked on ground, >>> never moving, even when I do the PORT TEST. >>> >>> If I remove the P1 connector from the control board, and put the scope >>> probe on pin 1 of that connector, I DO see pulse trains from the PORT TEST. >>> This indicates to me that the CPU is OK, but something is wrong at the >>> MAX1406 chip in the KPA100. >>> >>> In addition to not getting a response from the K2, it doesn’t appear to >>> obey commands. If I send RT1; or XT1; it doesn’t turn RIT or XIT on. >>> >>> I tried using a different main CPU chip (I have one with older firmware), >>> but that doesn’t appear to make a difference. I’m wondering if my problem >>> is a blown MAX1406 chip. >>> >>> Any recommendations or advice? It’s a big pain to remove the KPA100 board, >>> so I want to make sure what I’m replacing before I go after it. >>> >>> >>> Bill Coleman, AA4LR, PP-ASEL Mail: aa...@arrl.net >>> Web: http://boringhamradiopart.blogspot.com >>> Quote: "Not within a thousand years will man ever fly!" >>> -- Wilbur Wright, 1901 >>> >>> ______________________________________________________________ >>> 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 >>> Message delivered to matt.vk...@gmail.com >> ______________________________________________________________ >> 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 >> Message delivered to d...@w3fpr.com >
Bill Coleman, AA4LR, PP-ASEL Mail: aa...@arrl.net Web: http://boringhamradiopart.blogspot.com Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
