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Radio Navigationeasy#1178

To calculate the QDR (magnetic bearing FROM the station) from an RBI reading:

A

QDR = MH + RB + 180

B

QDR = RB - MH

C

QDR = MH + RB (the QDM) plus or minus 180

Correct
D

QDR = RB only

Explanation

QDR = QDM +/- 180 degrees. First calculate QDM (MH + RB), then add or subtract 180 to get the reciprocal bearing FROM the station.

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