Jeløy Radio

The Royal Norwegian Navy was the first user of wireless telegraphy in Norway, when they purchased two Slaby–Arco units in 1901.

They were installed on Eidsvold and Frithjof and tested the equipment out of the main base, Karljohansvern.

Additional sets were installed, especially after wireless telegraphy's successfully implementation in the Japanese Navy during the 1904–05 Russo-Japanese War.

A new NOK 1.5-million vacuum tube transmitter was installed in 1922 and the receiver station, originally at Nærbø, was moved to Fornebu in 1925.

[4] With the 1939 opening of Oslo Airport, Fornebu, the North American receiver station was moved to Ski.

At the peak point-to-point connections had been established with seventeen cities, as far away as in Japan and South America.

The furthest away was to the Falkland Islands, which was connected to allow for relays onwards to the Norwegian settlement of Grytviken on South Georgia.