I have a 250 Hz filter I use for PSK31. It seems to improve reception with the normal numbers of signals on 20 meters. I does wonders with nearby strong signals.
I am using the computer as a pan adapter, so I have to narrow the bandwidth around the desired signal manually. (I have a K3 button assigned to opening the bandwidth up again at the end of a QSO.) When my P3 arrives (RSN I hope), I plan to try to use it as the pan adapter, tune with the K3, and just have the computer do fine tuning and QSO recording. Regarding the digital modes: I see PSK31 as a rag chewing mode. Transmission speed is about the same as typing speed from a good typist. It is easy to demodulate the 31 Hz bandwidth signal if there is a 31 Hz guard band on either side, making is a good neighbor on crowded bands. I also see some PSK61, which is twice as fast and good for the macro driven "599 73 OM QRZ?" type of contacts. The WSJT modes can get a signal through when the noise floor is higher than the signal. While I'm not a CW operator, I'm working in that direction. Narrow bandwidth and no computer are compelling characteristics. Cheers - Bill, AE6JV On 11/1/12 at 10:31 AM, mzil...@magellangps.com (Matthew Zilmer) wrote: >If you're really into CW, you might consider one of the tighter >roofing filters (250, 400, 500 Hz). Generally the data modes >use small passbands too. ----------------------------------------------------------------------- Bill Frantz | If the site is supported by | Periwinkle (408)356-8506 | ads, you are the product. | 16345 Englewood Ave www.pwpconsult.com | | Los Gatos, CA 95032 ______________________________________________________________ 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
