G`day,
I`m running a K2 + EC2(KAT100/KPA100), fully loaded, actual fw`s, which seemed to work fine. But driving an external linear amplifier (tune situation) I noticed inacceptable rf output fluctuations of the KPA100. (measured on antenna as well as on dummy-load) K2 (alone): obviously no output fluctuations K2+KPA100 (independant of KAT100 settings: bypass or auto mode): 1. jumping output fluctuations of 10 to 15 W on all bands 2. height of fluctuation nearly independant of K2 power knob setting; f.e. 10 W jumps at 30 W as on 50 W or any other driver setting. 3. fluctuation depends on K2 power knob setting, there exist ranges with and without fluctuation (on same band), obviously different ranges for different bands. Asked a friend to come along with his K2+EC2 (also fully loaded, actual fw`s) for test changing of components. But his K2+EC2 showed same behaviour. Btw, another K2/100 + KAT100 (all but KX60V options) showed same behaviour but fluctuation was less (max. 8 W). 10-15 W jumps are a bit "much" ... :-(( Any ideas? Frank, DL4KQ _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
