Bob, If CAL TPA is actually 220, that is much too high - The K2 microprocessor thinks the heat sink is at 220 degrees C!! Set it back to match the room temperature in degrees C when the heat sink is at the ambient temperature. (i.e. 22 rather than 220).
73, Don W3FPR > -----Original Message----- > > Yesterday I turned on and the fan came on even though the heatsink was > cold and when I tried to TX 'PA hot' came on and the PA was inhibited. > > 1. CAL tpa is 220 which is about right ~ 22C and Fan menu set nor. > 2. On TX - Q3 base is 0.6v - which I think is about right (RC4 going > high of course) > 3. On U1 RC7 is 5 and RC6 is low which is the correct output for Fan Hi > - which is what it is doing. > 4. Power control less than 10w and the K2 sends OK > 5. Firmware PA 1.06 > > Any ideas? > > 73 Bob G3PJT > _______________________________________________ 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
