Hi Gerhard, Not an answer I'm afraid, but I recently opened up my KPA100 to try to find the whole answer to the low power out problem. Even though my KPA100 puts out 100w on all bands, I don't like something lurking ready to bite! I immediately noticed that smell as though something had been hot at sometime, and as far as I can tell (sniff) some resistor(s) around T1 was (were) the cause. No visible sign of overheating, and values OK. T1 is OK, the transistors are healthy, the fan runs all the time when power demand is over 11W, and in a pileup the heatsink does get warm but not hot.
Sorry I do not have a XV144. 73, Geoff. GM4ESD ----- Original Message ----- From: "GS" <[EMAIL PROTECTED]> To: "Mailingliste Elecraft" <[email protected]> Sent: Monday, July 04, 2005 8:08 AM Subject: [Elecraft] Temperature with KPA100 and XV144 > Hi list, > > I have run into some minor problems regarding > temperature rises with the mentioned devices and like > your opinion/solution. > > 1st, the KPA100. I noticed that even when I only > answer some CQs in a contest (CW) the fins get very > hot - of course the little fan fights it. Not to speak > of CQing myself. This is only possible with another > fan on top. (I admit that I didn't dare not using this > additional fan). > _______________________________________________ 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
