File:Anthorn Transmitting Station Communications Masts - Cable Detail ^1 - geograph.org.uk - 1804398.jpg
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Anthorn_Transmitting_Station_Communications_Masts_-_Cable_Detail_^1_-_geograph.org.uk_-_1804398.jpg (640 × 480 pixels, file size: 38 KB, MIME type: image/jpeg)
Captions
Captions
Insulator strings and wires in the wire antenna of the naval VLF transmitter at Anthorn Radio Station, Anthorn, UK
Summary[edit]
| Description |
English: Details of the supporting cables of the huge wire trideco antenna of the very low frequency (VLF) naval radio transmitter at Anthorn Radio Station, Anthorn, UK, used by the British Navy to communicate with submerged submarines. This facility was actually under the command of NATO, and in a nuclear war would be used to transmit missile launch orders to ballistic missile submarines. It transmits on 19.6 kHz with a callsign of GQD with output power of 550 kilowatts. The antenna consists of 6 vertical wire radiators driven at the base of the central mast, attached to 6 2148 foot rhombic-shaped horizontal multiwire toploads. These extend at angles of 60° from the central mast, supported by 12 surrounding masts, giving the antenna the shape of a 6 pointed star when viewed from above. The entire antenna is more than a mile in diameter. This photo shows the attachments of wires from two of the rhombic toploads to the vertical radiator wires. The standing waves on the high Q antenna create very high voltages on the topload wires, requiring long insulator strings with corona rings to stand the voltage where the toploads are attached to the mast. |
| Date | |
| Source | From geograph.org.uk |
| Author | James T M Towill |
| Attribution (required by the license) | James T M Towill / Anthorn Transmitting Station Communications Masts - Cable Detail #1 / |
| Camera location |   | View this and other nearby images on: OpenStreetMap |  |
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| Object location | | View this and other nearby images on: OpenStreetMap | |
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Licensing[edit]
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This image was taken from the Geograph project collection. See this photograph's page on the Geograph website for the photographer's contact details. The copyright on this image is owned by James T M Towill and is licensed for reuse under the Creative Commons Attribution-ShareAlike 2.0 license.
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This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
Attribution: James T M Towill
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 12:22, 14 March 2011 | | 640 × 480 (38 KB) | GeographBot (talk | contribs) | == {{int:filedesc}} == {{Information |description={{en|1=Anthorn Transmitting Station Communications Masts - Cable Detail #1 A detailed view of cable arrangements in the site.}} |date=2010-04-08 |source=From [http://www.geograph.org.uk/photo/1804398 geogr |
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