> ...I > suggested to Lyle that they change the default center fq. in AFSK to > 1500 so it will match Data A then let the user change as desired. The center frequency in AFSK will be between the two tones selected for the tone pair. It really can;t be anything else. DATA A is a general purpose data mode. AFSK is targeted for RTTY operation. 73, Lyle KK7P