I am fairly new to the K3 but have no problems setting up N1MM and
other software, getting things to work properly. My problem is I
cannot get RTTY to send/TX. I have made a homebrew interface with
optoisolators for both the FSK line and the PTT line. I'm going from a
separate serial port, pins 3 and 7, for FSK and PTT, to the Assy(15
pin) connector. To pins 1 for FSK, 4 for PTT and 5 for ground.
When I run MMTTY I cannot get the rig to key. If I switch to SSB or CW
and use the CAT line to work the PTT, no problem. If I switch to RTTY
and try to use the CAT line it will not key the TX. I've tried a
variety of setting in MMTTY and get no TX. I have a 1000MP set up with
a similar homebrew interface and have no issues.
Can anyone shed some help on me?
73 Bill K3SV
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