John asked me to post this additional useful info. -- Enno
============= I wanted to report back to you on the "noise" I was encountering with my K3. I was not aware of this but changing the RX EQ settings other than default will cause excess "noise" when changing to the cw mode. When I cleared those previous settings the "noise floor" of the receiver went down. Something you may want to try at your end. 73 john-n4dsp Enno, PF5X wrote: > > Hi all, > > My K3 #1263 was delivered in July with F/W MCU 2.18 DSP 1.84 and I was > really enjoying the RX capabilities of the K3. Now that I have upgraded to > 2.38/1.90 I believe the RX is more "restless" when listening to an "empty" > space on the band. The S-meter is constantly on S5 with pre-amp ON and S3 > with pre-amp OFF on the lower bands (30/40m). I have compensated that a > bit by lowering the AGC threshold (from 5 to 4 now). > I liked the initial F/W wrt AGC behavior better (less fatiguing to listen > to). > > I have read in the F/W history file that changes to the AGC have been made > from F/W 2.22 onwards. So I wonder if other people have the same > experience. > > I live in an urban area so it IS noisy out here. It is just the way the K3 > deals with that noisy background level. > When switching to ANT2 (not connected to anything) the RX goes virtually > silent. > > -- Enno, PF5X > -- View this message in context: http://n2.nabble.com/AGC-behaviour-tp1114728p1130062.html Sent from the Elecraft mailing list archive at Nabble.com. _______________________________________________ Elecraft mailing list Post to: [email protected] 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
