To transmit FSK from N1MM+/MMTTY with a K3 or K3S, you need: (a) some kind of serial port-based keying interface; and (b) a cable from the keying interface to the 15-pin ACC port on the back of the K3/K3S (pin 1 is the FSK keying input).
The serial port used for FSK keying by MMTTY must be a different serial port from the port used by N1MM+ for radio control. The two programs cannot share the same serial port. The serial port interface can be a one-transistor keying circuit connected to a true serial port, or the same kind of interface connected to a USB-to-serial adapter with the help of the EXTFSK plugin in MMTTY, or a USB device that incorporates both a virtual serial port and a keying circuit, such as a commercially available keying interface (e.g. microHam, RigExpert, ...), or a TinyFSK (either with a special plugin for MMTTY or used directly from N1MM+). In principle, an RTTY program could use radio control commands to key FSK via the USB cable to the radio, but none of the RTTY modems supported by N1MM+ (including MMTTY) use this method. It should be possible to program CAT1ASC macros into the N1MM+ function keys to implement this approach, but I don't know whether anyone has tried this. There are a number of people who have used a similar approach for keying CW from N1MM+ with the KX2 and KX3, and offhand I cannot think of a reason why it would not also work in FSK RTTY, but I have never tried it. Just as in CW, there are likely to be some features of N1MM+ that work with more traditional methods but that wouldn't work using this unsupported method. 73, Rich VE3KI PD1RP wrote: I want to do FSK with my K3S. N1MM and MMTTY. The USB cable i used it for radio control. What kind of cable do i need for FSK or can i used the USB cable also. Any suggestions are welcome. ______________________________________________________________ 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 Message delivered to [email protected]
