OK folks, I am really truly sorry I started this tuner-efficiency-by-measuring-its-heat thread. I apologize. It was sort of an e-nerd joke and I really miscalculated the laugh-factor in it, it seems there was none, an unfortunate failing for me ... but too common. Boltzmann's Constant is in my HP48GX calculator, not that I actually know or care what to do with it at this point in my life.
It would be hugely difficult to get any sort of accuracy in a measurement of the heat lost in a tuner to find its efficiency, I never meant it to be real or even close to reality. Again, I'm sorry to have been joking around on a serious list. Won't do it again. Please, everyone, use what works, have fun, enjoy the hobby with the great E-gear. My KPA500 is heating the room far more than my MFJ989C. If you can make QSO's, it works. 73, Fred K6DGW - Northern California Contest Club - CU in the 2012 Cal QSO Party 6-7 Oct 2012 - www.cqp.org On 3/10/2012 4:56 PM, Fred Townsend wrote: > Ron, Rick, Erik: There are many reasons why temperature measurements are a > poor way of evaluating a tuner. There is a method of power measure based on > temperature rise. It's called a bolometer. It only works well if the mass > involved is small. Wiki bolometers if you want the details. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
