[Elecraft] When do you use fast AGC?

Geoffrey Mackenzie-Kennedy gmk at gm4esd.fsworld.co.uk
Sun Oct 15 05:55:02 EDT 2006


Hi Jeff,

Putting aside not using AGC at all, whether you use fast or slow AGC for 
either CW or SSB depends on how quickly you want the receiver to recover its 
full sensitivity after being smacked by a strong signal. The 'fast' and 
'slow' refer to recovery time. In a DX pile-up situation when using AGC I 
prefer to use 'Fast' so as not to miss any short transmission from the 
victim such as 'agn', especially when the signal is weak in or close to the 
noise and he sends immediately after a bunch of stations with strong signals 
have finished calling. 'Slow' AGC is easier on the ears when ragchewing or 
if the DX station is reasonably strong, or when there are strong bursts of 
storm QRN, but my personal preference is to use 'Fast' all the time when 
using AGC.

73,
Geoff
GM4ESD


----- Original Message ----- 
From: "Jeff" <wb5gwb at optonline.net>
To: <Elecraft at mailman.qth.net>
Sent: Sunday, October 15, 2006 2:00 AM
Subject: [Elecraft] When do you use fast AGC?


> Hi gang,
>
> The K2 is the first rig I've had that has adjustable AGC.  Under what 
> conditions would one benefit from using fast AGC?  It seems that slow AGC 
> is easier on the ears on CW.
>
> Thanks & 73,
> Jeff
> WB5GWB
> Long Island, NY





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