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Radio beacons: Difference between revisions
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→Marker beacons: oops, horizontal.... vertical, 't nieuwe pinnen
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Often the [[VOR-DME]] part of the [[TACAN]] is also made available for civilian navigation. If so, the beacon is called a '''VORTAC''', but the use is as a normal [[VOR-DME]], in the normal frequency range. The range of the beacon varies. Most have the same range as a [[VOR-DME]] but many will have different ranges. | Often the [[VOR-DME]] part of the [[TACAN]] is also made available for civilian navigation. If so, the beacon is called a '''VORTAC''', but the use is as a normal [[VOR-DME]], in the normal frequency range. The range of the beacon varies. Most have the same range as a [[VOR-DME]] but many will have different ranges. | ||
==Marker beacons== | ==Marker beacons== | ||
Runways used to have three | Runways used to have three vertical directed radio beacons in-line with the runway to aid landing, the [http://en.wikipedia.org/wiki/Marker_beacon marker beacons]. | ||
# Outer marker - Typically placed at 4 NM from runway | # Outer marker - Typically placed at 4 NM from runway | ||
# Middle marker - Typically placed at 3500 feet from the runway | # Middle marker - Typically placed at 3500 feet from the runway | ||