While tweaking the rx EQ may help mask the problem I feel the root cause is that the AGC operates at too low a signal level. I like to set my RF gain at a level where I can hear what I want but not the band noise. If I then engage the AGC it has the effect of increasing the gain by 2 or three S points increasing background band noise by the same amount. Or put another way, the same as increasing the RF gain control by 15 - 20 degrees of arc.
It is not receiver generated noise. My receiver is fabulously quiet with the AGC off. 73 John G3XRJ > > My first thought was to change the EQ more like I have my TX eq set pulling > the low end down and raising the high end up does tend to accent the > high-end of speech for clarity on phone but on a quiet band makes the band > noise sound hissy. > > I don't have my low end set up to the plus side as high nor the high end set > as low on the negative side as N1EU but have went in this general direction > to smooth out the band noise but in a very active round table I don't know > if the noise tone is really that important in relation to good receive audio > clarity. If you go too high on the plus side of the bottom end and too > negative on the high end you can tend to use loose some signal clarity and > get a little muddy. > > > > 73 de KE4WY Jim > > These work for me, CW or Phone: > > RX Eq settings Low to High audio band: > 50 = +2 > 100= +2 > 200= +1 > 400= 0 > 800= -1 > 1.6k= -2 > 2.4k= -3 > 3.2k= -4 > ____________________________________________________________________________ > ______________________________________________________________ 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
