Hi, rigctl -u indicates that Yaesu FT775GXII cannot set ptt, although the documentation of this rig tells:
"The CAT jack also provides access to the PTT line at pin 4 to allow keying the transmitter".
At the same time, the file yaesu/ft757gx.c set the flag ptt_type = RIG_PTT_SERIAL_DTR, but does not provides a function ft757_set_ptt (although there is a ft757_get_ptt).
Was something forbidden ? Thanks.