Hi Peter, Using a regular/cheap USB <> RS232 converter and NPN-"interface" to the ACC port. FSK works fine here with my K3s.
MMTTY settings: TX menu : port = EXTFSK64 Misc menu : tx-port = Com-TxD(FSK) , click USB and set C where needed Audio via USB. Henk PA0C PS, kan jammer genoeg niet met RTTY contest meedoen -----Oorspronkelijk bericht----- Van: elecraft-boun...@mailman.qth.net <elecraft-boun...@mailman.qth.net> Namens brian Verzonden: donderdag 30 augustus 2018 19:36 Aan: elecraft@mailman.qth.net Onderwerp: Re: [Elecraft] K3S fsk with usb Rich, I seem to recall that the serial port needed for FSK generally cannot come from the run of the mill USB/RS232 converters. They can't operate at 45 baud/5 bit rate needed. See: http://aa5au.com/GettingStartedOnRtty.pdf This is old info and things may have changed. So what does a guy who has only USB ports do other than AFSK? I thought that was his question. 73 de Brian/K3KO On 8/30/2018 18:19 PM, Richard Ferch 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 > N1MM+ 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:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to > als...@comcast.net > > --- > This email has been checked for viruses by AVG. > https://www.avg.com > ______________________________________________________________ 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 Message delivered to h...@kpnplanet.nl ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
