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Racal MA-4225
Portable encryption unit - this page is a stub

The MA-4225 is a portable voice encryption unit developed and sold by Racal COMSEC Ltd. in the UK in the early 1980s. It has roughly the size as a portable radio (transceiver) and was probably used to add secure voice transmission to such portable radios.

Judging from the manufacturing date-codes on the various chips on the PCB, the units was built around 1984. The MA-4225 contains one large PCB with nearly 20 different hybrid building blocks, most of which are sealed.

At present no further information about this portable unit is available. If you know more, please contact us.
  
The MA-4225in the palm of a hand

Racal MA-4225 The MA-4225in the palm of a hand Mode switch Keypad Battery connection Interior Hybrid building blocks Keypad PCB
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Racal MA-4225
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The MA-4225in the palm of a hand
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Mode switch
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Keypad
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Battery connection
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Interior
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Hybrid building blocks
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Keypad PCB

Further information
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Crypto Museum. Created: Monday 13 September 2010. Last changed: Saturday, 24 February 2018 - 16:38 CET.
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