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IC-7300 Settings for PTT by CAT control?

I've not been able to get the rig to key/unkey using CAT commands. The COM port, baud rate, and other settings are correct, and are those used by FLDIGI, JTDX, WSJTX and work fine with those programs.

OmniRig works as it should too.

I have USB KEYING (CW) turned on, as required by WINLINK.

If you have been able to use CAT commands in VarAC to key/unkey the 7300, please look at your 7300 settings and tell me what your USB KEYING (CW) setting is, and also any other settings you feel might need to be changed.

73, Joe WD4KAV

11 comments

Comments (11)

Siegfried Loeffler

Apr 03, 2022

Same here, can't get the CAT control to work with the IC7300. The buttons "PTT on" and "PTT off" in VarAC work fine, but in real operations the TX is never turned on. Tried all kinds of settings but didn't succeed - would appreciate if somebody could share the configuration of the rig to be used in order to make this work. 73 !

wd4kav

Apr 04, 2022

Replying to

Here's another thing to try. Start VarAC, then, once you're at the VarAC screen, go to VARA-HF. Click on "Settings", then "Sound Card". Make sure you have USB AUDIO CODEC (or whatever your rig sound card is called) selected in both "Device Input" and "Device Output".

After that, click on the "Test" button, and while your rig is keyed, move the slider to the right of "Test" toward the right. At some point, you should begin to hear audio (if you have our 7300 set up to monitor your transmitter) or see output.

Adjust the audio till the ALC level is about 1/3 of the way up.

Let me know how you do.