Specifications

11.3 Audio troubleshooting (transmission / reception)
Problems with your VHF radio and their possible causes and solutions are described below:
No audio transmission
Possible Causes Possible Solutions
Incorrect settings
Reset the radio to factory defaults, using the Maintenance menu:
Menu > Set-up > Maintenance
> System reset.
Dirt or debris blocking the microphone on the fist mic or Raymic
handset.
Check the microphone on the fist mic or Raymic to ensure that the microphone port is clear and not
blocked. Clean if necessary.
Incorrect channel type in use.
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.
Insufficient transmission power. When communicating with vessels at a distance, ensure the radio is set to transmit at 25 W power. Press
the
HI/LObutton on the fist mic or the Raymic handset and ensure that the 25 W symbol is displayed.
No audio reception
Possible Causes Possible Solutions
Incorrect settings
Reset the radio to factory defaults, using the Maintenance menu:
Menu > Set-up > Maintenance
> System reset.
Incorrect channel type in use.
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.
Incorrect volume or squelch level.
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.
Troubleshooting
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