VLH-3000Page 10
6 OPERATION
This section contains operating instructions for the VLH-3000.
6.1 Switching Power On/Off
1. Rotate the LISTEN/PWR knob clockwise to turn on the VLH-3000.
2. To turn the VLH-3000 off, turn the LISTEN/PWR knob fully counter-clock-
wise.
6.2 Hail/Listen-Back
1. Press the PA button to activate the PA horn, then select the output PA
horn by pressing the FWD, BOTH, or AFT button.
2. Adjust the LISTEN/PWR knob to approximately 10 o’clock position, if
necessary turn clockwise to increase the internal (or external speaker
when connected) speaker volume.
3. Adjust the PA knob to approximately 10 o’clock position.
4. Press the microphone PTT button, then speak clearly with your mouth
about one inch (2.5 cm) from the microphone. Rotate the PA knob with
the PTT button pressed to adjust the PA horn output level. The PA horn
output level can be set from 0 to 30 watts.
5. Release the microphone PTT button. The PA horn will automatically act
as a microphone and the incoming audio signal will be heard from the
built-in or external VLH-3000 speaker. This is called Listen-Back.
6. Rotate the IC knob to increase or decrease the Listen-Back volume.
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