Hi Dave, Here is an easy test to see what THR level you should use. First, set the SLP to 15. That will give the most AGC action -- all signal strengths will sound about the same. You might want to do this if you are listening to a round table of differing strength signals. I keep my SLP = 0, to allow me to distinguish between strong and weak signal in a contest situation. Next, choose a noisy band or the band that you want to set the AGC THR. It very well could be different on different noisy bands. Now, while listening to the noise, decrease the THR until you hear a decrease in noise. You could also use the AFV and dBV measurements but that is a bit trickier. If it were me, I'd set the THR a little higher than where it starts to be activated by the noise. Actually, I like to run THR pretty high because I like to operate the receiver in a linear region to distinguish different strength signals. Sometimes, though, I run the THR down a bit when there are a bunch of weak signals, like EUs calling, in addition to a bunch of strong US stations. Then having the AGC clip the stronger signals lets me run the AF or RF gain up to be able to hear the weaker EUs without blasting my ears with the stronger stations.
The bottom line is that there is tremendous flexibility in setting up the AGC and one size doesn't fit all. Cheers and 73, Fred KE7X Author of: "The Elecraft K3: Design, Configuration and Operation 2nd ed" "The Elecraft KX3 - Going for the summit" "The Elecraft KPA500 and KAT500 - the K-Line Dream Station" Printed, coil bound copies of these are all available at www.elecraft.com KPA500 and KAT500 Quick Set Up Guide http://www.ke7x.com/home/k-line-introduction-and-set-up-guide KAT500 and KXPA500 Tuner Operation http://www.ke7x.com/home/kat500-and-kxpa100-tuners ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
