RMA - Recommended minimum navigation information - Loran C data

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1.Status: A=data valid, V=blink, cycle or SNR warning

2.Latitude, degrees N/S

3.Longitude, degrees E/W

4.Time difference A, microseconds

5.Time difference B, microseconds

6.Speed over ground, knots

7.Course over ground, degrees true

8.Magnetic variation(see note 1),degree E/W

9.Mode indicator(see note 2)

10.Checksum

NOTE 1 - Easterly variation(E) subtracts from true course Westerly variation(W) adds to true course

NOTE 2 Positioning system Mode indicator:

A = Autonomous

D = Differential

E = Estimated (dead reckoning)

M = Manual input

S = Simulator

N = Data not valid

The Mode indicator field supplements the Status field. The Status field shall be set to V=invalid for all values of Operating Mode except for A=Autonomous and D=Differential. The positioning system Mode indicator and Status field shall not be null fields.

AP-22

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Furuno FELCOM 12 manual AP-22, RMA Recommended minimum navigation information Loran C data