While looking up more information on this issue in the latest online version of the K3 User Manual (version D5 dated 20 Sep 2009) I read something that puzzled me a bit: on page 54 the description of CONFIG:AGC HOLD reads "SLOW AGC "hold" time. Specifies the number of *seconds* that the SLOW AGC level is held after the signal drops. This can be used to reduce IMD caused by traditional AGC". Having some background in pro audio I guessed that the word "seconds" must be in error. Sure enough older versions of the User Manual mention *milliseconds* which sounds more logical to me. Something to put in the errata sheet?
73 Glenn ON4WIX / OR4W ----- Original Message ----- From: "Dave G4AON" <elecr...@astromag.co.uk> To: <elecraft@mailman.qth.net> Sent: Wednesday, December 02, 2009 6:42 PM Subject: [Elecraft] K3 other CQWW contest issues > It came as a surprise when a 40m pile up in the recent contest resulted > in distorted audio on my K3, this only occurred when I was in the thick > of it, multiple S9+ signals in the passband, with a 250 Hz filter and > DSP bandwidth around 100 Hz. This happened on 3 or 4 occasions, no NR, > no NB. A query to Wayne and Lyle resulted in a reminder to use SOFT AGC > which isn't the default setting. It wasn't a big issue and another K3 > owner noted the same with his K3, so perhaps the default needs changing > to SOFT? > > Not only is the K3 quite good with regard to key clicks, the synthesizer > noise level is much less than most of the competition, look at the ARRL > reviews for the "Spectral display of the K3/100 > transmitter during keying sideband testing" or the equivalent for the > other transceivers. When you are 2 miles from a non K3 using running 1.5 > KW on 80m CW, the resultant bandwidth of that transmitter can reach +/- > 50 KHz, if it was 10 or more dB lower life would be much more pleasant. > Many stations here in the UK, and perhaps elsewhere, ignore the power > limits (400 Watts in the case of the UK)... > > 73 Dave, G4AON > K3/100 #80 > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
