Author : M J Richardson
Source : From geograph.org.uk
Date : July 1962

Lighthouse and fog signal at Trevose Head
The tower is 27 metres (89 ft) tall, and has a range of 20 nautical miles (37 km ; 23 mi), but, on a clear night, you can just spot the light from Pendeen Lighthouse, over 35 miles (56 km) away.
The fog Signal character is 2 Blasts Every 30 Seconds

More informations :
– The sound SuperTyfon Fog Signal, Trevose Head Lighthouse, Cornwall, UK (1993) from cornes.debru.me and shortwavemusic
– Trevose Head lighthouse and foghorn from Trinity house