Hi Jerry, My TS-590 exhibits almost a similar situation, without the SO-3 high-stability oscillator installed. The specs say the 590's frequency stability is within +- 5ppm, and I've found the higher in frequency I go, the further up I need to tune to zero-beat a station. On 20m, I've found I have to consistently tune up a bit to center.
Doing the math, it looks like your KX3 is at least consistently off by 25 or 26 ppm: 133 / 5.0 = 26.6 ppm 190 / 7.335 = 25.9 ppm 250 / 10.0 = 25 ppm 384 / 15.0 = 25.6 ppm 25-26 ppm definitely adds up, and it seems to me the unit is mis-calibrated, but I don't know what the KX3's tolerance for frequency stability is. I'm a new KX3 owner myself so I haven't had enough experience with it to figure out if my unit is off by a small bit or not. Does the behavior change when the unit has been off for a while, vs when it warms up? Cheers, - Tony, N0RUA -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-Need-Advice-Xmt-Rcv-frequencies-differ-but-RIT-turned-off-tp7592042p7592051.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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 Message delivered to [email protected]
