I may be wandering into nit-picky land, but I noticed using a hand held infrared thermometer that the heat sink of the KPA100 is usually about 2 degrees warmer than ambient air temperature (when the unit has been sitting idle for several hours). For example, the heat sink will measure about 26 degs C and the room air temp is about 24 degs C.
For the purposes of the CAL tPA, which temp should I go with? Or does it really even matter? Secondarily, when I discovered all this, I also found out that I had never calibrated CAL tPA! I was wondering why the fan NEVER seemed to kick on! So, I've been using the KPA100 for YEARS without the benefit of the fan. I hope I didn't cause any long term degradation of the unit. Incidentally, it always seemed to get out at the proper power, but boy would it get hot! 73, Brian N5BCN -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-KPA100-Temp-Cal-Room-temp-or-radio-temp-tp7613845.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]
