Part of the ADF system used on aircraft includes

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Multiple Choice

Part of the ADF system used on aircraft includes

Automatic Direction Finding relies on two antennas to determine bearing to a radio beacon. The loop antenna provides a directional pattern that gives a maximum or minimum signal as its orientation changes, allowing you to infer the direction to the beacon. However, a loop by itself has a 180-degree ambiguity, meaning it can’t tell which side you’re on. The sense antenna supplies a reference direction and, when used together with the loop, resolves that ambiguity so you can identify the actual bearing toward the beacon. The ADF receiver processes signals from both antennas and displays the bearing to the pilot. Other options aren’t part of the ADF setup: a diplexer and mixer are general RF front-end components; a VOR/ILS receiver handles different navigation signals; and a transponder antenna serves the transponder, not the ADF.

Automatic Direction Finding relies on two antennas to determine bearing to a radio beacon. The loop antenna provides a directional pattern that gives a maximum or minimum signal as its orientation changes, allowing you to infer the direction to the beacon. However, a loop by itself has a 180-degree ambiguity, meaning it can’t tell which side you’re on. The sense antenna supplies a reference direction and, when used together with the loop, resolves that ambiguity so you can identify the actual bearing toward the beacon. The ADF receiver processes signals from both antennas and displays the bearing to the pilot.

Other options aren’t part of the ADF setup: a diplexer and mixer are general RF front-end components; a VOR/ILS receiver handles different navigation signals; and a transponder antenna serves the transponder, not the ADF.

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