"Note that I don’t discount that the 20m LPF is noticeably less efficient than those on the other bands. Each KPA is unique in this sense - we tune the LPFs for best efficiency for each band. I suspect your KPA is just fine, but the more info we get from you, the more we can tell what is going on."
In the time I have owned and used my KPA500 I have noticed that 20 m band requires a higher drive level than other bands. This thread prompted me to do some more analysis of data I had recorded last year. Data here - https://tinyurl.com/y5oygtlp The data show that my KPA500 is significantly less efficient on 20 m than on the other bands tested. Is this a characteristic of all KPA500 and, if so, why would that be the case? Note that my dummy load shows variation of characteristics with frequency and heating. I have the load complex values for every data point but I used a test run average R and X to name each test plot. 73, Andy, k3wyc ______________________________________________________________ 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
