Thanks, Don Wilhelm, your intuition was correct: I installed a 120pF capacitor at C12. When I replaced it with the correct 1200pF capacitor the frequency display worked!
73, Tom KQ7TJ Don Wilhelm wrote > Tom, > > Triple check C11 and C12 to be certain they are both 1200pF and that you > did not use the 120pF capacitor for one of them. > > Build yourself an RF Probe. The schematic for one is shown in the K1 > Manual Appendix on Troubleshooting. You can also purchase a kit from > Elecraft. > > 73, > Don W3FPR > > On 3/23/2019 10:03 PM, Tom Johnson wrote: > >> I am awaiting arrival of an RF Probe kit so I can do signal testing to >> attempt to trace down my problem. In the meantime I have looked over my >> board to the point it's invading my dreams, and I do not see any visible >> problem with the installation of any of the parts, with special attention >> to: Q9, Q1, R11, R12, L1, C2. >> >> I did see that I had not firmly seated U1, and corrected that: I was >> hoping >> that would do the trick, but it did not - still get the E42 code. >> >> It just seems to me that as everything tested out fine up until the >> installation of the L1 Toroid and the C2 capacitor (I'm using 68 pF disc >> for >> the 80 kHz range), that the issue should be centered there. I've >> confirmed >> the 33 turns on the toroid, and fiddled with the it's placement. I'm >> wondering if the winding direction makes a difference in the functioning >> of >> L1 - there is no picture of it in the manual, only a reference back to >> previous toroids, and I have wound it to match them. I've also confirmed >> continuity of the windings on L1. >> >> Lastly, I will reveal my testing ignorance here by mentioning my >> multimeter >> does measure frequency, but I am not sure if that applies in this case: >> ie, >> would that function as an RF Probe if I understood how to use it? >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: > Elecraft@.qth > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html -- Sent from: http://elecraft.365791.n2.nabble.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
