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G. P. O. Radioantenna and Parabolic Antenna Test Station Leswidden

Just outside the perimeter fence of a large British Telecom mast on the edge of Lower Bostraze and Leswidden Common (St Just) is a small ruined building of typical GPO (General Post Office) style. It comprises three rooms, two gutted by fire and another which contains a few pieces of GPO equipment and a chemical toilet. It is hard to imagine that this tiny shed was ever particularly inportant, yet without the experimental work carried out here by a small group of GPO engineers in the early 1960s, one of the greatest global communications breakthroughs of the twentieth century could not have been reached.

It was here in 1962 that the first test signals were broadcast to Antenna One ("Arthur"), the newly constructed parabolic antenna at Goonhilly Down Earth Station, just 20 miles away.

On July 23, 1962, the testing having proved successful, television pictures from the United States of America were beamed via feed horn antennae to the purpose-built communications satellite Telstar, which in turn relayed images to the reciever at Goonhilly, making this the world's first transatlantic sattelite television broadcast.

Exactly what the test station was used for after that historic experimental broadcast, I have not been able to find, but the site seems to have remained in the hands of GPO Telecommunications, who later built a modern radio station complete with large antenna to the north of the site. It is today owned and operated by GPO Telecomunications' successor British Telecom.
The Radioantenna from Leswidden Common. The Radioantenna.
Microwave drum antenna. Emergency telephone.

The disused telecommunications building. The largest room. Large amounts of Wiring were to be found amongst the rubble. wrecked instruments littered both the burnt out rooms. Toilet. Equipment cabinet. various switches.

Sources: BT Archives.
Reynolds, J. Cornish World Magazine 'Goodbye to Goonhilly' at http://www.cornishworldmagazine.co.uk/content/view/42/91/


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Page uploaded 2/8/07 Derelict Miscellany - Content © D. Gregory, 2005-2008, unless stated as otherwise.
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