* Secure telephone in a briefcase.
* 110 were built in the 1980's for senior US government officials to use when travelling.
* The device employed Linear Predictive Coding (LPC-10) at 28 kbps.
* Predecessor to STU II.

Navajo I  photo by Ralph Simpson

Contributors and Credits:

1) Ralph Simpson <ralphenator(at)gmail.com>

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Apr 13/12