I have K3 s/n 3020 with firmware 3.11. I'm planning to upgrade firmware at the next release--I didn't see 3.14 as important for me.
I've been using the K3 on 80 through 20 mostly, with great success and satisfaction--I love this radio. I have in filter locations 1-4 1 - 13 khz, 0 gain, 0 offset 2 - 2.7 khz 5-pole, 0 gain, -.85 offset 3 - 1.8 khz 8-pole, 0 gain, 0 offset 4 - .4 khz 8-pole, 2 gain, 0 offset I did NOT get the AM filter because I did not plan on transmitting AM. I DID get the FM filter because I want to listen to AM (broadcast band and SW), and possibly operate on 10 meter FM. When I try to use the FM filter for AM listening, the results are very poor. Specifically, poor bass and significant ringing, even when adjusted for max bandwidth, which shows as 5 khz on the display. If I turn the FM filter off, and use the 2.7 khz 5-pole filter for AM listening, the results are much better--no ringing and a more open sound with better bass. The FM filter bandwidth is set for 13 khz in the config menu. Did I make an error in judgment when I purchased the FM filter for AM listening, or am I experiencing a technical problem? I have not tried to use the FM filter for 10 meter FM because I haven't heard any detectable signals at my location. Thanks, Dan - W4TQ ______________________________________________________________ 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
