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PortaPack
PortaPack
Based on the HAMGEEK PortaPack H4M kit — guides apply to any PortaPack with Mayhem firmware.
Hardware
Getting Started
1
Firmware
The stock firmware is limited. Mayhem unlocks spectrum analysis, the full app suite, and better receive performance. Flash it first — it's a one-time step and fully reversible.
2
Videos
Good starting points — cover the hardware, what it can do, and how to get your first signal.
Use Cases
Reference
Legal
Receiving is almost universally legal. Transmitting without a licence is not — and the threshold for prosecution is low when it comes to aviation, emergency services, or cellular frequencies.
Laws vary significantly by country. Before using this hardware beyond FM broadcast and other clearly public transmissions, look up the radio regulations for your jurisdiction. Key terms to search: radiocommunications act, spectrum monitoring, scanner laws + your country name.