I've completed construction of my KPA100 and am doing final voltage checks listed in the manual on p.46. My KPA100 as bought was a rev. C kit, but prior to construction I purchased parts to build it as a rev. D. Apparently I was not thorough enough in annotating my manual, as I was looking for the high voltage from the bias supply at the cathode of D13, but in the rev. D manual, the test point is changed to the junction of C77 and R11. Before realizing this, I had the heat sink removed and was testing voltage on D1-D8. Although the voltage at junction of C77 and R11 was within spec, many of the voltages at D1-D8 are significantly different from the tables in the manual. I don't know if I should be concerned about this or not since the final high voltage is within spec (now that I'm measuring at the right test point), as is the negative supply for the RS-232. Here's a list of my measurements at D1-D8.
Spec Mine Diode Anode Cathode Anode Cathode D1 32 130 21.1 138 D2 84 32 89.0 20.9 D3 21 84 18.1 88.7 D4 36 21 38.2 17.1 D5 24 36 15.9 38.2 D6 13.7 24 13.5 16.0 D7 -22 -8.8 -24.1 -1.1 D8 -8.8 0 -1.1 0 Any insight would be appreciated. -Ben K1NT _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net 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