The APF has a rapid 180 degree phase shift as you pass through its center frequency. This is fine fore CW, but would wreak havoc on a PSK31 signal. The K3s narrow filters (nomianl 50 Hz) are very good for local PSK31 decoding. In addition, most PC-based software includes well-matched filters for PSK31 decoding.
The APF is really intended for CW operation only. 73, Lyle KK7P > What are the pro's and cons of implementing it for the digital modes too? ______________________________________________________________ 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
