Re: AGC

Posted by on Mar 06, 2009; 3:18pm
URL: http://elecraft.85.s1.nabble.com/AGC-tp2435434p2436279.html

Thanks for the reply Keith,  Makes sense.   Don...w2xb    -------Original Message-------   From: [hidden email] Date: 03/06/09 07:56:25 To: [hidden email] Subject: Re: AGC   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: elecraft-bounces@... [mailto:elecraft-bounces@...] On Behalf Of W2XB Sent: Friday, March 06, 2009 7:43 AM To: elecraft@... 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:Elecraft@... 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@... This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html This email is a reply to your post @ http://n2.nabble.com/AGC-tp2435434p2435493.html You can reply by email or by visting the link above.