mark roz wrote: > > Toby, > > I was operating RTTY AFSK mode. Driving K3 from my > computer sound card. I was using VOX or PTT. > At the start of transmission the output power of the > K3 > would jump to 50W. However the power of K3 was > adjusted to 25W level. So, K3 would put out 50W at > first and than quickly go back to proper level of 25W. > > This would put my AMP in to fault every time. > Does anybody know what am I doing wrong? > > I have noticed that if I increase the mic gain level while transmitting, the output increases a little and then slowly drops back to the level selected by the power control. If I reduce the input level again, the output drops and then slowly comes back again. So it would seem that there is some slow acting AGC operating to keep the level correct. The solution is probably to adjust the audio input level by slowly bringing it up from 0 until the measured output stops increasing, then you know you have just enough output and no more.
----- Julian, G4ILO K3 s/n: 222 K2 s/n: 392 G4ILO's Shack: www.g4ilo.com Zerobeat Ham Forums: www.zerobeat.net/smf -- View this message in context: http://www.nabble.com/Fwd%3A--K3--CQ-WW-WPX-RTTY---a-mini-summary-tp15402308p15403118.html Sent from the Elecraft mailing list archive at Nabble.com. _______________________________________________ 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
