Don, DATA A and AFSK A are not the same. For PSK31 with a center frequency of 1500 Hz, you should be using the DATA A submode.
In AFSK A, which is really intended for Baudot RTTY only, the normal or default filter center frequency is controlled by the PITCH setting; with the default PITCH setting of 2125-170, the normal center frequency is 2210 Hz. There is no PITCH setting that corresponds exactly to a center frequency of 1500 Hz, although the 1445-170 setting is pretty close (1530 Hz). In DATA A, the default center frequency is 1500 Hz. Also, you will find in AFSK A that your dial frequency reading is different from everyone else's; AFSK A uses the lower sideband and the dial displays the actual RTTY mark frequency, whereas DATA A uses the upper sideband and the dial displays the suppressed carrier frequency. 73, Rich VE3KI NA6Z wrote: > So I've been using TX DATA/AFSK A for PSK31 on 20M for quite a while with no > problems. With the recent activity on 10M, I thought I'd give PSK31 a try up > there. For whatever reason my 2700 Hz filter is centered on 1500 Hz (as I > would > expect), but my 500 Hz filter is centered on 2210 Hz. It turns out that's the > case for all bands except 20M. It's been so long I don't remember what I did > to > change the default. How do I change all those defaults to 1500 Hz without > having to use the shift knob? In other words, I want the bandpass display on > the front panel to show centered when the filter is centered on 1500 Hz. ______________________________________________________________ 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
