Yaesu FT 757GXII : How to set PTT ?

[Remi Chateauneu]

Hi,

Yaesu FT 757GXII

$ rigctl -m 107 -r /dev/ttyUSB0 -p /dev/ttyUSB0

Rig command: f
Frequency: 144000

Rig command: T
PTT: 1

Rig command: t
PTT: 1

Rig command: T
PTT: 0

Rig command: t
PTT: 0

* The frequency is correct.
* I can see that DTR is switched when activating PTT.

But the Yaesu does not see anything, just normal reception;

Any idea please ? Thanks in advance?

[Nate Bargmann]

Good question.  :-)

So the DTR line from your computer is tracking the rigctl PTT command correctly as I understand it but the radio is not keying.  If you manually ground pin 4 of the CAT port, does the radio transmit?

If not, then I suspect the problem is in the radio.  :-(

I do have a radio handy to test this on.