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I’m using a differential GPS but I can’t get the differential light to show on the panel.


GPS incorrectly setup.
seaPro incorrectly setup.
Problem with the differential GPS signal.


GPS incorrectly setup.
Find the interface or communications screen on your GPS.
Check that the GPS is setup to send “GGA” position.
GPS has a clear view of the sky

seaPro incorrectly setup.

Select “Setup” from the main menu, then “Nav properties”, and then “NMEA Rx”
Tick the “GGA” NMEA sentence

Problem with the transmitted differential signal

Check that you are in range of a functioning differential transmitter.
Check that the GPS is receiving the differential correction.
Satellite correction service such as WASS / EGNOS this service can be intermittent


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