I find the K3 APF invaluable for weak signal work on the microwaves. In the microwave NAC contest last night I worked three stations over 600km on 2.3 and 3.4GHz by aircraft reflection, and the APF really helped pull the weak signals out of the noise. I generally use 1kHz width for CW and my ears for the rest of the filtering, but the APF makes a really big difference on those signals that seem just too weak to copy.
The only disadvantage is the hold rather than tap to switch it on/off - I often find I end up having to reset the filter width when I try to cancel the APF . -- 73 John G3XDY K3 #0689 ______________________________________________________________ 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
