5 OPERATING INSTRUCTIONS
5.1 Switching ON and selecting channels
1) Turn VOL and SQ to position 0.
2) Turn Tron AIR on by pushing the ON/OFF button for 3
seconds. Tron AIR is now working at 121.5MHz.
3) Adjust the sound volume by turning VOL. Use noise from the
loudspeaker to find a proper level.
4) Adjust the squelch level by turning SQ. Turn SQ carefully until
noise from the loudspeaker is suppressed. Be careful not to
turn the squelch level to high. This may lead to no squelch
opening when weak signals are received. The Tron AIR is now
ready for reception.
5) Selecting another channel is done with the CH wheel.
121.5MHz indicating light will switch off when 123.1MHz is
chosen.
5.2 Emergency call sequence
1) Start the emergency call sequence by selecting 121.5MHz.
2) Emergency calling:
- Push PTT and send the emergency signal MAYDAY,
repeated three times,
- the words; THIS IS,
- call sign or other identification on the mobile station
being at distress, repeated three times.
- Release PTT.
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