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Andy Timmons Shows How It's Done: "On Your Way Sweet Soul"

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ericblair2/03/2019 12:48:01 am PST

re: #27 The Very Reverend Battleaxe of Knowledge

I remember Henry Kissinger talking about using one of these scrambler phones from his hotel room in Moscow. The Russians couldn’t get anything out of tapping his line, but he thought having to scream into it at the top of his lungs kind of defeated the purpose….

Yes, sort of like triple locking the front door and leaving the garage open.

Frequency hopping is used quite a lot in military comms to prevent hostile jamming. It can also make a signal almost impossible to detect, as the signal can weaker than the natural background noise and still be received correctly.

3G cellular as well (but not 4G), and Bluetooth are based on frequency hopping. These can be jammed because everyone knows their hopping codes, but helps the radios deal with interference problems.