[Elecraft] [K3] AGC

[W2XB]

Thanks for the reply Keith,

 Makes sense. 



Don...w2xb 

 

-------Original Message-------

 

From: Darwin, Keith (via Nabble)

Date: 03/06/09 07:56:25

To: W2XB

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 at ... 

[mailto:elecraft-bounces at ...] On Behalf Of W2XB 

Sent: Friday, March 06, 2009 7:43 AM 

To: elecraft at ... 

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 

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