In order to control PTT for VoiceKeyer, the manual states the following:
I ended up using Eterlogic VSPE (demo mode at the moment) and it works. Just curious if there is another 'baked in' way to accomplish this type of PTT control within Thetis. Thanks for any input!VoiceKeyer controls the radio PTT by toggling the DTR and/or RTS pins on a PC serial port.
Most commercially-available sound card interfaces sold for digital mode operation support this
method of PTT control. PowerSDR supports this method using a virtual serial port created with
VSPmgr, com0com, or similar program. SmartSDR supports this method by creating a PTT
serial port in SmartSDR CAT.
VoiceKeyer also allows up to two messages in each profile to be triggered by pulsing one of the
modem control lines (CTS, DSR) on either the serial port used for PTT control or on another
serial port.