Guido, I would first look at the bandpass filter - on 20 meters, capacitors C28 and C29 and trimmers C21 and C23. The symptoms sound like a bad solder connection. For the 17 meter problem, check trimmer capacitors C32 and C34. If that does not produce results, then check the VFO frequency when tuned to 18000 kHz, it should be 22915 kHz (use the internal counter probe plugged into TP1 and CAL FCTR to check the frequency if you have no external counter.
73, Don W3FPR DM1GP - Dr. Guido Pelz wrote: > Dear K2 specialists, > > I recently finished my K2 with (more or less) no problems. Everything is > fine, expect the transmitter alignment for 17m and 20m. Here are the > symptoms > found while doing the alignment with 2W output in tune mode: > > 1. On 20m, the output power is rapidly changing between 0.1 and about 9W. > 2. On 17m, I have a problem reaching 2W output. The maximum I get is 0.5W. > > Any idea? > > 73, > > Guido - DM1GP > > ______________________________________________________________ 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
