As far as I am aware, a radio signal is basically just shouting into the void, and anyone who is tuned to the correct channel can hear you clear as day, like a car radio. So, how do militaries keep their radio signals from being over heard by the enemy? Do they have special radios, or are the communications sent over radios just not that important strategically?
In: Technology
They’re encrypted for one (digitally) and they channel or frequency hop – in a seemingly random manner, but if you know the seed and the algorithm, a computer can follow it.
The channel/frequency hopping while part of a security measure is also good to battle against jamming and electronic countermeasures although most ECM suites can probably track/jam a frequency hopping signal too.
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