---- "Darwin wrote: > And a related question. At what power level does the fan come on? > -----Original Message----- > It always bothers me when the fan comes on even though I realize that it > is normal and desirable behavior.
IMHO It is my understanding the the Power transistors in the KPA-100 (2SC2879) are rated for 100W SSB PEP for each, and with that HUGE heat sink I would expect the KPA-100 to loaf along fine at 100 watts CW, 30 wpm for two minutes. I have seen a few posts where folks have added additional fans. The fan is temperature controlled it will turn on high when the heat sink temp goes above 40 degrees C and turn off two minutes after the temp goes below 37 degrees C. For me, I like it when the fan turns on, it is letting me know that my KPA-100 is functioning as it was designed. 73 KI4DGH Chuck G. _______________________________________________ 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
