RDF - Radio Direction Finder. An instrument that can determine the direction that a radio transmission is coming from. The RDF is used with a radio beacon to find a radio bearing to help determine the vessel's position.
RDF - Radio Direction Finder; electronic radar instrument used to determine a ship's position.
reach - A channel located between an island and the mainland. A reach is also the distance from bend to bend in a river or channel.
(ALRS) RDF Radio Direction Finder
Navigational instruments which was used to find out the direction of a radio broadcast. Although lacking some precision, it was very reliable when all the other means to fix the position were not available.
Radio Direction Finder (RDF) - Instrument used to obtain a bearing to a marine radio beacon. Radio beacons identified on the chart with signal frequency. Locate direction when signal is null, can be 5° to 10° off ...
radio direction, finder, RDF
An electronic navigation device that takes bearings on radio signals.
radiotelephone ...
neap tide: a tide of less than average range, occurring at the first and third quarters of the moon. null: the compass point at which a radio direction finder's directional antenna receives the weakest signal from a given RDF station, ...
 See also: Rudder, Point, Quarter, Clew, After
|
