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TR-300 OPERATION
POWER
You should now be ready to turn the TR-300
“ON”. Rotate the OFF/ON Volume Control
Switch on the TR-300 clockwise to turn the
unit on.
BATTERY CHECK
As you turn the unit on, note that the battery
light (labeled bat/ovmod) should flash one or
more times with good batteries. Low batteries
will cause the light to be illuminated continu-
ously and a bad battery will not cause any
illumination at all.
Figure 30
Low Battery/ Overmodulation
and Talk Indicator Lights
HEADSET VOLUME
After batteries have been checked, adjust the
volume control by rotating the control as re-
quired for comfortable listening volume.
Figure 31
Power ON/OFF - Volume Control - TR-300
PUSH TO TALK/PUSH TO TRANSMIT
To enable the talk function on the Model
TR-300 press and hold down on the talk but-
ton and begin talking. Releasing the talk but-
ton will discontinue the microphone audio.
For continuous talk, quickly press the talk but-
ton twice. This locks on the talk function. To
release the talk function press the talk button
once. Note that the TR-300 transmits any time
that the power is on.
NOTE: The talk light will be illuminated
whenever the talk function is activated.
Figure 32
Push-to-Talk/Lock-to-Talk Switch
-26-
bat/
ovmod
talk
ON/ INCREASES
VOLUME
ON / OFF SWITCH AND
VOLUME CONTROL
RadioCom
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TR-300
talk
PUSH-TO-TALK/LOCK-TO-TALK SWITCH
talk
TALK LIGHT