50 to 100 watts?? I've seen the R98 tweak help with power cycling over a range of a few watts, but not a 2:1 range from 50 to 100 watts!
That's not normal for ANY K2 that I've ever heard of but, Don, you've worked with far more K2's than I. Have you seen this large a range caused by R98 elsewhere? The app note describes a variation like I've seen, less than 0.5 dB or, say, perhaps as much as 0.5 watts at the 5 watt level. Ron AC7AC -----Original Message----- Dick, Check out this application note at the Elecraft website - http://www.elecraft.com/Apps/Power_Control_Mod.html Each K2 is a bit different in the overall transmit gain, so for most stable operation, the value of R98 must be determined experimentally. Be aware that increasing R98 too much will result in a power output drop on 10 meters (the band with the lowest transmit gain), so some compromise must be made - you select how much power reduction on 10 meters is tolerable for you. 73, Don W3FPR Dick Grolleman wrote: > Hi All > > I'm using my K2/100 to drive my Amp with 50 watts. But the output > power is not stabel. When set to 50 watt the power goes from 50 to 100 and back, wich causes to much drive for my Amp. Other then that the K2 works fine with 100watts, barefood. > Any one knows this problem? And more important, how do is solve it. > My K2 is serial nr 4072. It's build in sprng 2004. Rev B KPA100 > > Have the K3 on order, have to wait a few more months > > _______________________________________________ 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 _______________________________________________ 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
