You guys are headed in the wrong direction ... crank the AGC threshold UP and you will come closer to getting what you want. I have mine set to 008 and if it would go higher I would set it there.
73, Dave AB7E On 10/8/2010 7:25 AM, Steve Wedge wrote: > John, I've noticed the same thing: the AGC does seem to make the receiver - > in the absence of signals - roar quite a bit with my early (#770) K3. > > I've attributed a lot of the noise to computer and suburban hash, but > listening with my old Drake receiver shows things much quieter. Noise > reduction does help, but it would be nice to quiet this down as John suggests. > > My .02 > > Steve, W1ES > > -----Original Message----- >> From: John Chappell G3XRJ<[email protected]> >> Sent: Oct 8, 2010 8:22 AM >> To: [email protected] >> Subject: [Elecraft] K3 AGC THR doesn't go low enough >> >> I like to listen to a receiver with the rf gain set to just below >> antenna atmospheric noise and AGC on - and not raising the rf gain when >> it is switched on. >> >> My K3 is srl 46xx and the only way I get the quiet background I desire >> is to turn the AGC off. This necessitates having the AF limiter turned >> on to save my ears and hopefully the speaker output chip. >> >> I've played around with various AGC settings and in particular the >> AGC THR - which if it would go 2 or 3 points lower would appear to >> address the problem. >> >> Anyway, to save a thousand words, this recording sets the scene >> http://tinyurl.com/38qo9ud >> >> - made from Main Rx on 3670khz with 2.8khz filter passband set to >> Normal, NR and NB Off. >> Sub Rx is identical in performance in this respect. >> >> In all other respects that I use it the K3 is a stunner. >> >> John G3XRJ >> ______________________________________________________________ >> 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 > ______________________________________________________________ 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
