Good advice from N1EU and K2AV here, folks! Also, see Wayne's posting: "Tips for using APF."
I'm a junkie for trying out new firmware, and I can attest that the APF is as good as it ever was-- in fact you need the latest version of it to be sure you have the 5 Hz resolution in the APF shift control. Other pre-requisites for success with APF are using FINE tune (1 Hz frequency resolution) and also shifting the signal frequency (using RIT and APF shift) ) slightly off the ringing frequency. 73, Chuck Guenther NI0C K3 s/n 1061 Barry, N1EU wrote: " Forget it - full stop! I just ran a spectral analysis of the current firmware versus the very first APF implementation (mcu 4.17 dsp 2.65) from 11/3/10 AND THE PLOTS ARE ABSOLUTELY CONGRUOUS! The APF implementation hasn't changed a bit (or a byte)." Guy, K2AV wrote: " May I suggest that one of the necessities of using APF is to throttle back the RF gain so that the AGC is not pushing up the noise to the level of forcing what sounds like ringing. When I'm hearing what sounds like ringing, moving back the RF gain (or removing PRE, or using ATT) will usually clear it up. Using slow AGC usually does NOT help much, but backing off RF gain so the background noise is only moderate or less usually helps." ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
