Build a Security 1 (speech scrambler) from Popular Electronics March 1970 – Link.
4 thoughts on “HOW TO – Build a speech scrambler”
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HOW TO – Build a speech scrambler
Build a Security 1 (speech scrambler) from Popular Electronics March 1970 – Link.
Comments are closed.
yes, but how would i get it to fit in the telephone in my shoe?
what? im a spy!
Not exactly a STU-III but proabably pretty cool.