> I noticed when I tried to narrow the passband from the 2.7 > nominal that the signals often decreased in intelligibility. > I used 1.8 K filters on my Yaesu FT 1K. I also notice I was > not tuning dead on to SSB signals, I seemed to be off to the > side emphasizing hi end response. I could hear as I swung > past the station where the more dead on was. I haven't > noticed that with other rigs. > > So I am asking: Would the 1.8 help, and still maintain good > intelligibility? What other tweaks or changes have the list > members used for top phone performance.
I have been using a 1.5 kHz bandwidth on SSB with the K3 for over 18 months now. In fact, I never use a wider bandwidth. I think the intelligibility is excellent. The K3 has changed phone Sweepstakes from tortuous to pleasant for me. Unlike CW where WIDTH and SHIFT are handy, I only use HI CUT, and occasionally LO CUT, on SSB. To go from the default 2.8 kHz to 1.8 kHz on SSB, simply reduce HI CUT by 1000 Hz. As I go further, I find that around 1.6 kHz bandwidth, I like to increase LO CUT 50-100 Hz for optimum intelligibility. The 1.8 kHz (actual -6 dB BW is 1.9 kHz) crystal filter is an excellent roofer for this application. I use the narrower 1.5 kHz crystal filter (actual -6 dB BW is 1.65 kHz), available from INRAD. Ed - W0YK ______________________________________________________________ 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
