I believe that FSK uses the TX signal on a serial port and is connected to a pin on the DE15 ACC2 port on the K3(S).
Sent from my iPhone ...nr4c. bill > On Aug 30, 2018, at 2:19 PM, Richard Ferch <[email protected]> wrote: > > 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]
