> I am seeing is the power not being limited to what the power > control has set. For example, set 5W, key down in CW mode, 5W > is transmitted. Switch to data mode, send a pure tone, 12W is > transmitted. Something is wrong with the way the power > control is working.
Have you set a value for CONFIG:TXG VCE because you voice peaks were not coming up to the CW level? Adding a dB or two there will cause PSK peak powers to run higher than the CW value. > In reply to Rob, if I reduce the audio input level so that no > ALC bars are shown, I can get the output power on a pure tone > to follow what is set on the power control. Running "no bars" of ALC in PSK/AFSK causes the microphone gain to be increased to compensate for the insufficient drive. This will result in added distortion (noise and IMD). 73, ... Joe, W4TV > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Julian, G4ILO > Sent: Saturday, October 04, 2008 5:47 AM > To: elecraft@mailman.qth.net > Subject: RE: [Elecraft] Power too high in PSK31 / SSB > > > > > > Rob May-2 wrote: > > > > I worked some PSK today at 20 watts and it seems to be > fine. Just a > > couple of bars on the RF meter when I have the power dialed to 20 > > watts. I running the latest beta (2.45) but I didn't have > any problem > > with 2.38. No compression, mic gain turned down so that the > ALC just > > barely makes one bar. > > > In reply to someone who responded off-list, I am aware that > the power when a pure tone is sent will be about twice the > power shown when the transmitter is modulated. However, what > I am seeing is the power not being limited to what the power > control has set. For example, set 5W, key down in CW mode, 5W > is transmitted. Switch to data mode, send a pure tone, 12W is > transmitted. Something is wrong with the way the power > control is working. > > In reply to Rob, if I reduce the audio input level so that no > ALC bars are shown, I can get the output power on a pure tone > to follow what is set on the power control. However, this is > not how we have been told the K3 should be set up, and it was > not necessary to do this with previous versions of the > firmware. Lyle stated in a post some months ago, that the ALC > meter in data mode does not actually measure ALC, but signal > level, and should be adjusted to a steady 4 or 5 bars to > ensure adequate drive. > > I will try the most recent release of the firmware to see if > it makes a difference. > > ----- > Julian, G4ILO. K2 #392 K3 #222. > http://www.g4ilo.com/ G4ILO's Shack > http://www.ham-directory.com/ Ham > Directory http://www.g4ilo.com/kcomm.html KComm for > Elecraft K2 and K3 > -- > View this message in context: > http://n2.nabble.com/-K3--Power-too-high-in-PSK31---SSB-tp1143 050p1143674.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 _______________________________________________ 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
