Sandy, As far as I know, there is no direct relationship between the strength of a signal and receiver AGC.
My AD8307 power meter can measure signal strengths directly off an antenna if called upon to do that, it goes down to -80 dBm (about S-8) with no other amplification. This is strictly a power meter, no AGC implied or implemented - the output is the base 10 logarithm of the input signal. All one must do is measure the strength of the received signal to drive an S-meter - but it must be calibrated if it is used as an absolute measurement device. Yes, the implementation in most receivers derive the AGC voltage from the same signal strength measurement circuits, so things get a bit mixed up, and often appear as a 'chicken and egg' situation. 73, Don W3FPR > -----Original Message----- > > Circuitrywise, an "AGC/AVC free" S-meter is an oxymoron! Can't have one > without the other. > (snip) > 73, > Sandy W5TVW > -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.8/718 - Release Date: 3/11/2007 9:27 AM _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
