RigExpert TI-3000
• PTT and CW output functions
Transceivers provide PTT (Push To Talk)
and CW (Continuous Wave) keyer inputs
to allow setting the transmitter on or off
and operating CW using external device
(PTT pedal, CW bug or paddle, terminal
node controller, or personal computer).
A separate COM port is created for PTT/
CW outputs.
• Squelch input
Some software, such as EchoLink, re-
quires the interface to provide a squelch
input to detect if the radio channel is
busy.
In RigExpert TI-3000, the squelch input is
assigned to the DCD line of the COM port
used for PTT and CW outputs.
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