Audio Troubleshooting (Transmission / Reception) - Raymarine RAY91 Installation And Operation Instruction Manual

11.5 Audio troubleshooting (transmission / reception)

Problems with your VHF radio and their possible causes and solutions are described below:
No audio transmission
Possible Causes
Incorrect settings
Dirt or debris blocking the microphone
on the fist mic or Raymic handset.
Incorrect channel type in use.
Insufficient transmission power.
No audio reception
Possible Causes
Incorrect settings
Incorrect channel type in use.
Incorrect volume or squelch level.
Troubleshooting
Possible Solutions
Reset the radio to factory defaults, using the Maintenance
menu: Menu > Set-up > Maintenance > System reset.
Check the microphone on the fist mic or Raymic to ensure
that the microphone port is clear and not blocked. Clean
if necessary.
Ensure you are using only Simplex channels for testing,
if communicating with another vessel. For example,
channels 6, 8, 9, 10, 13, 67, 72, or 73.
When communicating with vessels at a distance, ensure
the radio is set to transmit at 25 W power. Press the HI
/ LO button on the fist mic or the Raymic handset and
ensure that the 25 W symbol is displayed.
Possible Solutions
Reset the radio to factory defaults, using the Maintenance
menu: Menu > Set-up > Maintenance > System reset.
Ensure you are using only Simplex channels for testing,
if communicating with another vessel. For example,
channels 6, 8, 9, 10, 13, 67, 72, or 73.
1. Firstly, verify that noise is audible from the speakers,
by setting the Squelch level to zero. To do this,
press the Vol/Sq button a few times until Squelch is
displayed. Then adjust the level to zero.
2. If there is no noise from the speaker, try adjusting the
volume. To do this, press the Vol/Sq button a few
times until Volume is displayed. Then adjust the level
as required.
Note: Volume control on each handset in the system
and the radio units themselves is independent.
3. If audio / noise can be heard, press the Vol/Sq button
a few times until Squelch is displayed. Then adjust
the squelch level until the noise stops.
4. If no audio / noise is heard from the speaker after
completing the above steps, contact Product Support
for further guidance.
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