I've taken the watt meter out of the loop, and have the K2 set for 10W. Double checked the windings and solder on T1, and it still won't go below 30mV. I definitely have C31 at the low spot as the voltage climbs on either side. I still can't get anywhere the voltage needed at U5 pin 5 for the power calibration.
Jeremy VA3ZTF Don Wilhelm-4 wrote > Jeremy, > > Tune the capacitor very slowly and use a non-metallic tool. The null is > sharp and deep. > You must have a good 50 ohm dummy load connected. > You may want to take your external wattmeter out of line to do the > nulling. > The actual voltage will depend on the power level, at 5 watts it should > be less than 10 mV, but you should be able to get it below 15 or 20 mV > if the power is 10 watts. If you are using 20 watts or more from the > KPA100, then your 30 mV is probably OK. > > Ideally, the voltage should go to zero, but being practical, one may not > be able to adjust the capacitor in fine enough increments to achieve > that goal. > > 73, > Don W3FPR > > On 2/28/2014 4:32 PM, JeremyJones wrote: >> I just reread Dons post, and he says less than 10mV, so I guess I have >> some >> trouble shooting to do with that first, >> >> Jeremy >> VA3ZTF >> >> >> >> -- >> View this message in context: >> http://elecraft.365791.n2.nabble.com/KAT100-Power-Calibration-Problem-tp7584832p7584865.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: > Elecraft@.qth >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: > Elecraft@.qth > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://elecraft.365791.n2.nabble.com/KAT100-Power-Calibration-Problem-tp7584832p7584881.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:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
