Handheld two-way radios for preppers (and other curious folks)

This page summarizes the projects mentioned and recommended in the original post on news.ycombinator.com
P25

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  • OpenGD77

    Discontinued Firmware for DMR transceivers using the NXP MK22 MCU, AT1846S RF chip and HR-C6000 DMR chipset. Including the Radioddiy GD-77, Baofeng DM-1801 and Baofeng RD-5R.

    • You can get a cheap Chinese radio and run OpenGD77 on it. Not exactly Raspberry Pi with RTL-SDR, but still open source.

    [1] https://github.com/rogerclarkmelbourne/OpenGD77

  • KFDtool

    Open Source P25 KFD (Key Fill Device/Keyloader/KVL)

    • Most P25 radios also require a specialized device (keyloader) for loading encryption keys that's separate from the vendor's programming software for channels and other parameters. Used keyloaders that support AES-256 still go for $2,000+ (Motorola KVL3000+/KVL4000).

    A couple years ago I developed an open source one:

    https://github.com/KFDtool/KFDtool

  • InfluxDB

    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

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NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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