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Cefn Du, Radio Station, Concrete Base L

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NPRN505892
Map ReferenceSH56SW
Grid ReferenceSH5429060442
Unitary (Local) AuthorityGwynedd
Old CountyCaernarfonshire
CommunityWaunfawr
Type Of SitePLATFORM
PeriodModern
Description

A concrete wireless mast stay anchor 9D for mast 9, of which four were used per 1914 antenna mast. It measures 3.7m long by 3.7m at the base (3.7m x 2m at top), and up to 1m high. Mass of ca. 98 tons. Five steel ‘eyes’ providing attachment points for a total of seven guy wire tensioning turnbuckles splayed out and ran deep into the concrete. The form was used widely across the Marconi Empire wireless scheme.

Source: Rowlands, J., Marconi's Carnarvon Station 1912-1939: a journey into early commercial wireless in north Wales' Second Edition, 2023.

RCAHMW, 2023.