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Todays date is: Sun Aug 2010 |
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| Navigational & Radio Aids |
Dotted around the United Kingdom are many different types of Radio navigation aids which are there to assist Pilot's in safe navigation across the country. There are also many radio installations spread across the UK which ensure that London Control are able to provide radio coverage across the uk to pilot's wherever they are.
Repeaters
Repeaters are electronic devices that receive signals and then retransmit the signals at a higher level and/or higher power, or onto the other side of an obstruction, so that the signals can cover longer distances without degradation.
Below are a few photos of the Repeater station and aerials at Winstone in Gloucester.
VORS
VOR, short for VHF Omni-directional Radio Range, is a type of radio navigation system for aircraft. A VOR ground station broadcasts a VHF radio composite signal including the station's identifier in morse code (and sometimes a voice identifier), and data that allows the airborne receiving equipment to derive a magnetic bearing from the station to the aircraft (direction from the VOR station in relation to the Earth's magnetic North at the time of installation).
VOR stations in areas of magnetic compass unreliability are oriented with respect to True North. This line of position is called the "radial" from the VOR. The intersection of two radials from different VOR stations on a chart allows for a "fix" or approximate position of the aircraft.
Developed from earlier Visual-Aural Range (VAR) systems, the VOR was designed to provide 360 courses to and from the station selectable by the pilot.
The VOR's major advantage is that the radio signal provides a reliable line (radial) from the station which can be selected and followed by the pilot. A worldwide land-based network of "air highways", known in the US as Victor Airways (below 18,000 feet) and "jet routes" (at and above 18,000 feet), was set up linking VORs.
An aircraft could follow a specific path from station to station by tuning the successive stations on the VOR receiver, and then either following the desired course on a Radio Magnetic Indicator, or setting it on a conventional VOR indicator (shown below) or a Horizontal Situation Indicator (HSI, a more sophisticated version of the VOR indicator) and keeping a course pointer centered on the display. Further reading - Source: http://en.wikipedia.org/wiki/VHF_omnidirectional_range
VORS - Brecon
VORS - Strumble
Learn about Air Traffic Control
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