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MEL
Mullard Equipment Ltd

MEL, or Mullard, or Mullard Equipment Ltd., was a British manufacturer and supplier of electronic components and equipment. The company was well-known from the 1920s onwards for its production of radio valves (tubes). The company later became part of Philips and by the mid-1990s it was one of the largest defence contractors of the UK. It is currently part of Thales.

Early Mullard logo

Although Mullard is mainly known as a manufacturer of electronic components, such as diodes and transistors, they also produced professional equipment and even cryptographic devices. In the early 1960s, for example, Mullard subsidary Egan Electric on Canvey Island (UK) produced the wheels for the British Singlet cipher machine. In the late 1980s and early 1990s MEL produced the PRC-319 Radio and the BA-1304 crypto/message unit under contract with the UK government.

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MEL equipment on this website
Singlet cipher machine for which Egan Electric (Mullard) produced the cipher wheels
BA-1304 Electronic Message Unit (EMU) with crypto capabilities
EMU Alpha - Alphanumeric version of the BA-1304 (EMU)
BA-1402 patrol Burst Message Terminal (Modified Nokia SANLA)
BA-1403 patrol Burst Message Terminal (Modified Nokia PARSA)
Further information
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Crypto Museum. Last changed: Friday, 18 February 2022 - 16:12 CET.
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