34-51-00  AUTOMATIC DIRECTION FINDING SYSTEM Back

A. System Function

The Automatic Direction Finding (ADF) system uses Radio Frequency (RF) signals from a set ground station to measure the direction (bearing) to the ground station).

B. System Components

(1) There are two ADF sub-systems, the No.1 ADF system and the No.2 ADF system.

(2) The primary components of each ADF system are: (Ref. Fig. 1)
  • An integrated navigation unit (Nav Unit)
  • An ADF antenna

C. System Operation

The ADF system receives RF signals from a set ground station. It changes the RF signals to digital and analog signals and calculates the bearing.

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