9/12/2023 0 Comments Air navigation beaconsIn the Americas the navigational NDB's operate 530 kHz to 1700 kHz with 10 kHz increments. Very modern receivers can estimate the distance towards a NDB station by the azimuth towards the station. From the time it takes, the number of degrees and the ground speed the pilot can calculate the distance towards the station. The pilot measures the time it takes to fly a number of degrees on the compass. For that a pilot flies on a 90 degree angle opposite the station (one wing-tip pointing towards the station). It is possible to calculate the distance towards a NDB station. The typical frequencies of a NDB can be found on the AM Medium band (530 kHz to 1700 kHz) but during flight planning we shall discover NDB's outside this range. The equipment on board of our aircraft will have to figure out where it is. Navigation at night and at high altitude are possible.Ī Non-Directional Beacon ( NDB) is the most basic type of radio beacon. Radio beacons enable Radio navigation and IFR taking away the need for visual landmarks. Two-way communication is possible where the equipment on-board questions equipment on-ground or the beacon is used for ATIS or Tower communication. A beacon can include information, it can even send out music. In the above comparisons, a radio beacon is the one that is shouting or that is laying out the ropes. This describes how a VOR-Distance Measuring Equipment ( VOR-DME) works.Ī radio is a generic term for the transmission of electromagnetic waves. This describes how a VHF Omnidirectional Range ( VOR) works.īut what if you want to know where you are and you have just one friend? Then the friend had to make knots in the ropes telling how far away you are. So by comparing the numbers on the ropes that cross the place where you are standing, you know where you are. The numbers on the rope are the same numbers as the degrees on a compass. Each rope leads directly towards a friend. If the friends do not like to shout all the time, they can lay down numbered ropes around them. This describes how a Non Directional Beacon ( NDB) works. When there are two friends (with distinctive voices) and a map telling you where they stand, you can even figure out about where you are on that map. You turn around till you hear your friend best and start walking towards the sound. In a distance a friend is shouting "I am here!". Standing blindfolded in the middle of a field. Position finding with NDB, VOR and VOR-DME
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