A rectangular concrete anchoring point measuring 2.25m long by 1.7m wide and up to 0.5m high. It has a loop, cut during station dismantling, made of 1½” diameter iron embedded at the northern centre top. Its function was either for masthead or triatic (antenna wire support) wire straining. Such bases were widely used at Marconi stations worldwide.

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

RCAHMW, 2023.