Marconi Wireless Telegraph

British Post Office engineers inspect Marconi's radio equipment during a demonstration on Flat Holm Island, 13 May 1897. The transmitter is at centre, the coherer receiver below it, and the pole supporting the wire antenna is visible at top.

Just because.

Flat Holm Island Aerial View

Flat Holm island is just south of Cardiff, Wales, about 3 miles offshore in the Bristol Channel. "A sanatorium for cholera patients was built in 1896 as the isolation hospital for the port of Cardiff."  (Wikipedia) Note that was just a year before the photo at top.

Flat Holm Island