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Voice Encryption Unit
The MSC-2001 is a voice encryption unit, developed and manufactured by
Siemens in Germany.
Although it can basically be used in the audio line of any radio set,
it was intended for use with the AN/PRC-77 radio.
Up to 8 different crypto keys can be stored in the device. The current
key is selected with a rotary key at the front panel.
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The rotary key can also be used to select CLEAR mode (i.e. no crypto)
and to ZEROIZE (i.e. clear all keys).
The unit connects to the radio via a short cable between the TX/RX socket
and (typically) the AN/PRC-77 radio.
New crypto keys are loaded into the device by means of a special
key fill unit that connects to the REMOTE socket.
Two different key fill units were available: the S42043-E522-A1,
that allowed up to 8 different keys to be loaded by means of 5-bit
paper tape, and the S42043-E522-A2, that had a build-in memory.
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At present we have no further information about this unit.
If you known more, or if you have some background information about is,
please contact us. As we have two such units, it would be nice
if we could demonstrate it at some point.
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© Copyright 2009-2011, Paul Reuvers & Marc Simons. Last changed: Mon,09 Jan 2012.20:35:26
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