David Gilbert wrote: > Here's a point that I think a lot of people are missing, though ... > the > signals need to be pretty weak. As someone else recently mentioned, > the > problem doesn't occur on strong signals. If you have a high ambient > noise level you may never even have the opportunity to notice the > problem.
In some cases, I understand, turning AGC off helps with this "small- signal" phenomenon. When Lyle gets back from vacation, we could experimentally increase the range of threshold and slope settings with AGC on to see if that helps, too. Another thing we might want to try is a variation on RF GAIN that controls only the DSP gain--not the hardware gain. This may have less effect on the noise floor than the current RF gain implementation. Also see my earlier email regarding the possibility that stronger out- of-DSP-passband signals could be causing problems for weak signals due to phantom hardware AGC modulation. Wayne N6KR ______________________________________________________________ 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
