Yes, I know. I’ve been using the cable that I built back in 2002, when I added the KPA100, and later modified when I added the KAT100.
> On Nov 18, 2021, at 4:14 PM, Matt Maguire <matt.vk...@gmail.com> 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 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
