My K3 is in the 61XX serial number range (almost 2 years old), and I'm running FW 4.67/2.81.
While setting up WSJT-X, I've noticed a rather pronounced audio roll-off on the waterfall display. By other means I've verified that the sound card being used is flat down to below 20 Hz, so it isn't that. Assuming that it is an attribute of the K3 itself, things are flat down to 400 Hz. Then there is a -3 dB roll-off at 300 Hz, -10 dB at 200 Hz, and -20 dB at 100 Hz. At the moment, my widest filter is an 8-pole 2.8 KHz (A 6 KHz AM filter is on order), and it properly centered and wide open. Is this roll-off similar to what other folks are seeing? 73, Bob, WB4SON ______________________________________________________________ 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
