Since AGC automatically turns down the gain when there is a big signal, I'd expect that it would make things quiet. Basically, it adjusts the gain to equalize all signals. Band noise, weak signals, strong signals - all are rendered at the same volume level as they come out the speaker. Turn AGC off and the quiet stuff remains quiet while the loud stuff gets much louder. Overall S/N ratio goes way up.
I run my rig with a combination of AGC on/off. I turn AGC on (to squash any loud peaks) then back RF gain down until the noise background gets weak. Now I have a higher average S/N ratio but still have the ear-protection benefits of AGC. - Keith N1AS - - K3 711 - -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of W2XB Sent: Friday, March 06, 2009 7:43 AM To: [email protected] Subject: [Elecraft] [K3] AGC Hello Folks, Just talking to a friend that has a K3 also and he was asking why the signal gets louder with less noise when you turn off the "AGC" ? I turned off tha agc when working a weak DX station, and he was right. Made the copy easier and much louder. What is the technical reason for this? Don..w2xb -- View this message in context: http://n2.nabble.com/AGC-tp2435434p2435434.html Sent from the [K3] mailing list archive at Nabble.com. ______________________________________________________________ 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 ______________________________________________________________ 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
