Hi all, Just for the record, I determined empirically that I needed a compressor setting of 20 to get a reasonable amount of talk power. I have been using this setting since my first week of operation and I am still getting good audio reports. My "indication" of "talk power" is from watching the average reading analog meter in my tuner. With this said I have visibly more talk power with the K3 than I had with my IC-718 with its fixed compressor turned on. Some IC-718 owners describe the compressor as preset from the factory as overly aggressive and recommend touching up an internal adjustment. I never found mine excessive and I always got good audio reports with the 718. One of these days I will take a scope home and check if the peak power indeed varies with the compressor setting, which of course it should not.
AB2TC - Knut Stewart G3RXQ wrote: > > I have now repeated the test with my 2 tone external source, and > get similar results to the microphone "Wurlo" test. The PEAK > signal amplitude is influenced by the Compression (Clipping ?).... > > Approaching the anniversary of the product release, it's 'bout > time the SSB transmit side of the K3 was sorted out. > Brings back memories of the KSB2 saga ! > > 73 > Stewart G3RXQ > On Tue, 29 Apr 2008 03:46:46 -0700 (PDT), G4ILO wrote: >> >> >> Stewart G3RXQ wrote: >> >>> My PEAK power is down by about 50% as measured on an 200MHz >>> oscilloscope when the COMP is set to 0. This can't be right.. >>> >> I don't have your measuring equipment, Stewart, but something > doesn't seem >> right to me either. >> >> The power output doesn't seem consistent even when you don't > change the >> settings. With MIC=60 CMP=0 and PWR=12.0 if I "aaalo" into the > mic, my >> average reading power meter normally shows about 1W. But > sometimes it holds >> at 2W or even 3W and sometimes a bit less. I have also observed > the meter >> steady at say 2W then after about a second drop back to 1W, even > though I >> haven't changed the pitch or tone of my "aaaa...". I realize > this is not a >> scientific test, but I don't believe that there is that much > difference >> between my consecutive repetitions of "aaalo." >> >> I need CMP=20 to get a reasonable average level on speech. > Without any >> compression the talk power is too low. Even my FT-817 with 5W > pep output can >> manage an average of 1W on speech and it doesn't have a speech > compressor. > <snip> > -- View this message in context: http://www.nabble.com/K3%3A-two-problems-tp16943980p16960444.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
