Thanks Don: Easy enough ! I appreciate that very much.
Yes I am working with my KPA100. I'm looking for why the K2 drops out of TX when I try to adjust output above 35 watts. A couple of the bands are also showing excessive current draw and high reflected. Just wanted to check the relays and make sure everything in the LPF first. I've spent a good part of the evening reading the archives for similar issues. Your comments in most cases take folks back to the SWR bridge and related components. BUT first things first ! Have a great evening Jerry > I assume you are working on a KPA100 - if not, please ignore. > The easiest way to check the relays and the LPF of the KPA100 is with an > antenna analyzer. > Put the KPA100 to the right of the K2 (upside down on a book or other > support) with the ribbon cable connected to the K2. Power only the base > K2 through the coaxial jack. > Put the leads of a 50 (ok, 51 will do fine) ohm resistor into the > connector that normally connects to the AUX RF header. > Power the K2 on and select each band in turn. For each band, scan > through the frequency range of the antenna analyzer to determine the > cutoff frequency for the LPF - it should be higher than the band edge, > but lower than the 2nd harmonic. > If all bands meet that criteria, the relays and LPF are correct - > assemble the KPA100 to the base K2 and go. ______________________________________________________________ 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
