Transmitting; Receiving; Programmable Auxiliary Functions - HYT TC-300 Owner's Manual

Transmitting

To transmit, press and hold down the PTT key, speak into the microphone at your normal
voice level. Hold the radio about 2.5 to 5 centimeters away from your mouth.

Receiving

Release the PTT key to receive.

Programmable Auxiliary Functions

The SK key is a programmable function button. Your dealer may assign any of the
following auxiliary functions to a short or long programmable key-press.
None
Power Adjust
Monitor
Monitor Momentary
Scan
Scrambler
VOX (Voice-Operated Transmit)
Compandor
Figure 3
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