Radio
Persistent Systems MPU5
The wearable MANET radio that meshes squads without infrastructure; the label everyone photographs and nobody can afford.
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Understand it first
Radios and comms, without the felony
FRS, GMRS, ham, and P25 — what each actually is, what needs a license, and how headsets connect.
Off-grid networking: comms when the towers are gone
Mesh radios, LoRa, and ham data — how small groups stay connected with zero infrastructure.
Digital security for normal people
Why attackers bother with you, the five habits that stop most of it, and what a hardened home network actually buys.
Civil unrest: getting home and staying out of it
The whole strategy is distance — leave early, route around, and be somewhere else when it gets bad.