DSC troubleshooting

TroubleshootingVHF radio DSC functions

DSC functions are not available / working

Possible causes	Possible solutions
MMSI number not programmed.	Programme your MMSI number. Each VHF radio requires a unique MMSI number. In the United States, this MUST be programmed into the unit by an authorized dealer. For more information, refer to: Obtain MMSI (Maritime Mobile Service Identity) number
Radio is set to ATIS or Marcom-C mode.	Use of DSC is not permitted when in ATIS or Marcom-C mode. You will be unable to make DSC distress and other types of digital selective call. If you are not in an ATIS region switch off ATIS mode: Menu > Set-up > ATIS set-up > ATIS.

Possible causes

Possible solutions

MMSI number not programmed.

Programme your MMSI number. Each VHF radio requires a unique MMSI number. In the United States, this MUST be programmed into the unit by an authorized dealer. For more information, refer to: Obtain MMSI (Maritime Mobile Service Identity) number

Radio is set to ATIS or Marcom-C mode.

Use of DSC is not permitted when in ATIS or Marcom-C mode. You will be unable to make DSC distress and other types of digital selective call.

If you are not in an ATIS region switch off ATIS mode: Menu > Set-up > ATIS set-up > ATIS.