Ben, THose voltages are not 'spec', but they are guidelines for troubleshooting. The oscillator activity will vary a lot from one unit to another, and a 10% variation either way from the values stated is usually OK - The important voltages are at the D1 cathode and the D7 anode.
Two points - 1) there is a new Diode voltage chart in the current level errata sheet - download it and use that chart. 2) is the R4 value on your KPA100 board 100k? If not change it to 100k and that will drop your D1-D8 voltages down a bit if your current R4 value is 39k. 73, Don W3FPR > -----Original Message----- > 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 > -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.16.8/621 - Release Date: 1/9/2007 1:37 PM _______________________________________________ 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
