Raymarine Ray230 - Manual (Page 97)

3-74 Operations
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ENT
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Input last 9 digits of
ATIS number using
numeric keypad
ENT
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ENT
re-enter
ATIS No.
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3.5.30.5.3 MY MMSI Set Up
The operation is identical to the MMSI set up operation described for the
RAY230 in section 3.5.30.4.2 MY MMSI Set Up.
Note: Regulations in some regions may not permit end users to program
their own MMSI number. If this unit was purchased to be used in such a
region, this function will be disabled and the programming must be done
by your dealer/distributor.