Secure Clear
XXCLARK at indst.indstate.edu
XXCLARK at indst.indstate.edu
Sun Nov 28 20:29:40 PST 1993
wisej <wisej at acf4.NYU.EDU> asked:
> (M) MOTOROLA
> Motorola and Secure Clear are trademarks of Motorola, Inc. (c) 1993
> Motorola, Inc.
>Comments?
Don't have one, but know two who do. Scramble, as I understand
the meaning of the word, they don't.
Last I knew, "Secure Clear" is simple frequency inversion, and can
be defeated by:
a $15 kit added to a scanner, or;
tuning the freq on a single sideband receiver.
I've even heard of individuals who had trained themselves, or
been trained, to understand the freq inverted signal.
Check out Cincinnati Microwave's spread spectrum frequency
phones. I don't know if they use frequency hopping or direct sequence,
but they may be secure against all but military and LEA types... and
the really determined and accomplished hardware hacker.
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