If you are using AFSK for RTTY and controlling PTT via a method such as rig control or VOX, Don's advice about only one COM port applies. The only COM port you need is for rig control, and the KIO3B simply allows you to replace whatever you used previously with a direct USB connection to the radio.
However, if you are using FSK from MMTTY (or even if you are using AFSK but have chosen for some reason to use MMTTY's PTT & FSK port for PTT control from MMTTY), there is a second serial port involved, for FSK (and possibly PTT) keying. The KIO3B's USB connection does not have anything to do with this. In MMTTY, the PTT & FSK Port that you configure under the TX tab in the MMTTY Setup window is not the same serial port you use for rig control. This is a separate serial port with keying circuit(s) for FSK (normally connected to TxD) and PTT (either RTS or DTR) connected to the K3's ACC connector. You do not use the serial port that is created by the driver for the KIO3B as the PTT & FSK port in MMTTY. MMTTY also offers some minimal rig control capabilities, using a serial port configured using the "Radio command" button in the same area of the setup window. This must be a different serial port from the FSK & PTT port. If you are not doing rig control from some other application (such as DX4Win), then you can use MMTTY's elementary rig control capabilities, and for that you can use the serial port associated with the KIO3B's serial adapter. You also mentioned difficulties in opening the audio codec in the KIO3B. This should show up in the list of sound cards under the SoundCard tab in MMTTY. Note that if there is anything plugged into the Line In jack on the KIO3B, the internal audio codec in the KIO3B will be disabled. It's an either/or - either use the codec in the KIO3B, or use a separate sound card, possibly inside the PC, connected to the K3's Line In jack. 73, Rich VE3KI On 8/19/2016 5:34 PM, Larry P. Greenberg wrote: > I recently upgraded my K3 with the new K103B that provides a USB connection, \ > eliminates the need for an external PC soundcard and retains all of the > original \ > RS232 functionality. I have an Edgeport USB to RS232 four port box providing > RS232 \ > connectivity to the K3, the amplifier, and rotator control. It seems to be > working \ > as DX4Win controls the radio, the rotator, and sends CW. I cannot get MMTTY > to \ > send RTTY or even execute the PTT function. It seems like I have not set-up > MMTTY \ > correctly. I am looking for someone who may be familiar with the new K3 > Interface \ > boards (K3s functionality) and MMTTY. My error message is Cannot Open COM3 > (COM \ > port used to control the K3 and send CW which works fine. I cannot select \ > additional soundcards such as CODEC from the soundcard menu under set-up. > Larry, WA9MAG ______________________________________________________________ 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]
