Anthorn transmitting station

Anthorn transmitting station

Location map
caption="Anthorn transmitting station shown within Cumbria" (gbmapping|NY179581)

The Anthorn Transmitting Station is located near Anthorn, Cumbria, England and is operated by VT Communications. It has two transmitters: one VLF and one LF.

The characteristic triangular pattern of roads, clearly visible on the mmuknr photo|317950|558150|10|aerial photograph, is a remnant from the World War II military airfield which was operated by the Royal Navy Air Service as "HMS Nuthatch".

VLF transmitter

The VLF transmitter is used primarily for transmitting orders to submarines on 19.6 kHz. Its callsign is GBZ.

It is a NATO facility, controlled from Northwood Headquarters along with three other VLF transmitters in Norway, Germany and Italy. [cite web
title=The Future of the British Bomb
author=John Ainslie
month=October | year=2005
publisher=Clydeside Press|format=PDF

LF transmitter: National Physical Laboratory time signal

The National Physical Laboratory (NPL) has installed three atomic clocks at Anthorn and on 27 February 2007 Britain’s national time signal transmissions, retaining their original call sign of MSF, were transferred there on a trial basis, moving formally on 1 April 2007. Monitoring and logging of the clocks and control of the transmissions is by internet link from the NPL offices at Teddington, using comparison with GPS signals at both locations. Signal monitoring is by radio. To ensure accuracy, dynamic adjustment of the aerial according to local conditions (such as wind distortion) is controlled from computers on site. [cite web
last =
first =
authorlink =
coauthors =
title =MSF the time from NPL
work =
publisher =National Physical Laboratory
date =
url =
format =
doi =
accessdate = 2007-03-20
] The signals, transmitted at 60 kHz, also provide a national frequency standard. The effective radiated power is 15 kW.


The General Lighthouse Authorities for Britain and Ireland have contracted VT Communications to develop eLORAN (enhanced LORAN) radio navigational aid for mariners. The transmitter is at Anthorn. [cite web
last =
first =
authorlink =
coauthors =
title = The GLAs award a 15-year eLoran contract to VT Communications
work =
publisher = Trinity House
date = 2007-05-31
url =
format =
doi =
accessdate = 2008-01-09

ee also

*Rugby transmitting station


Further reading

* Hall, L.L. (1965). Anthorn Very-Low-Frequency Radio Station. "Post Office Electrical Engineers' Journal", Vol. 58 (July 1965), p.114.

External links

* [ Russell W. Barnes' page about the wartime history]
* [ Pictures of Anthorn]
* [ Information on MSF relocation to Anthorn]
* [ Press release about MSF relocation to Anthorn]

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Rugby transmitting station — NOTOC The Rugby transmitting station was a large very low frequency (VLF) transmission facility near the town of Rugby, Warwickshire in England, situated just west of the A5 trunk road and in later years junction 18 of the M1 motorway. It came… …   Wikipedia

  • Anthorn — infobox UK place country = England static static image caption= latitude= 54.914689 longitude= 3.257294 official name=Anthorn population = shire district= Allerdale shire county= Cumbria region= North West England constituency westminster=… …   Wikipedia

  • LORAN — (LOng Range Aid to Navigation) is a terrestrial radio navigation system using low frequency radio transmitters that uses multiple transmitters (multilateration) to determine location and/or speed of the receiver. The current version of LORAN in… …   Wikipedia

  • Time from NPL — Map showing the location of the Anthorn VLF transmitter within Cumbria …   Wikipedia

  • Low frequency — or LF refers to Radio Frequencies (RF) in the range of 30 kHz ndash;300 kHz. In Europe, and parts of Northern Africa and of Asia, part of the LF spectrum is used for AM broadcast service. In the western hemisphere, its main use is for aircraft… …   Wikipedia

  • Horloge radio-pilotée — Une horloge radio pilotée est une horloge qui est synchronisée sur un signal horaire émis par une station disposant d une référence de temps, par exemple une horloge atomique. Une horloge radio pilotée peut être synchronisée sur les signaux d un… …   Wikipédia en Français