46 was a HF portable manpack transceiver used by the British Army during World War II.
Designed by Ekco for use during beach landings, the set was introduced in 1942.
[1] It was a 6 valve set with 3 preset crystal controlled channels, housed in a water-resistant enclosure carried in a webbing pouch.
The set was powered by a separate dry cell battery carried in a haversack.
[2] The frequency range was between 3.6 and 9.1 MHz depending on the coils and crystals fitted.