Dick, Rather than using SSB mode for data, use the DATA modes, it is less troublesome and compression is set to zero automatically.. Use DATA A mode for soundcard digital modes, or AFSK A for soundcard RTTY. See page 31 of the K3 manual. With good carrier balance, an AFSK signal is equal to an FSK signal. The K3 AFSK A data mode sets the mark frequency in the VFO (rather than the carrier frequency), and allows use of the dual passband filter which is designed for RTTY use. The narrow roofing filters and the full range of DSP filters can be used for DATA modes if you configure the narrow filters for receive in that mode. Transmit must always use the 2.7 or 2.8 kHz filters, but the K3 figures out the arithmetic involved.
If you wish to use the FSK input to the K3, you will have to provide a level translation and drive the FSK input on the ACC connector. MMTTY has methods of activating the FSK input. 73, Don W3FPR Richard W. Solomon wrote: > Does anyone have any idea when they will upgrade to Keyboard operation > for RTTY ? Now, I mean using real FSK, not this sound card AFSK stuff. > > In some radios, AFSK requires you to use the SSB mode, which does not > allow filter selection. The Yaesu does. > > 73, Dick, W1KSZ > > ______________________________________________________________ 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
