Multipurpose Radio Server (MRS)

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By: Zakary Timson

Date: September 16, 2025

Version: 1.0

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Compact communication and information exchange server on Raspberry Pi for service-denied areas.
Ideal for disasters, unserviced environments, long-range tracking, and offline-first operations.

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Table of Contents

• Multipurpose Radio Server
  • Description
    • Inspiration
    • Capabilities
  • Manual
    • Setup
    • Introduction
    • Connecting & Wifi
    • Mesh Network
    • LoRa Radio
    • FileBrowser
    • Desktop Environment
    • Services
      • AI Assistant
      • Archive
      • ATAK
      • Maps
      • Messaging
      • Pentesting
      • SDR
      • SSH
      • VPN
  • Todo
  • License

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Description

Inspiration

• A.C.I.D
• Offline internet
• Meshtastic radios
• HaLow mesh network
• Signal Intelligence

Capabilities

Networking

• 900 MHz HaLow / 2.4 GHz / 5 GHz Mesh WiFi using B.A.T.M.A.N. (1 km +)
• LoRa radio communication (1-100s of kms)
• Connect to AP with QR code using dnsmasq, hostapd
• Captive portal & device home page + settings page

Communication

• Offline & federated text/voice/file chat using Synapse and Element
• Built-in LoRa Meshtastic node (≈2–15 km)
• GPS positioning & offline maps using gpsd, chrony
• Track people & logistics with ATAK

Information Archive

• Offline AI/LLM assistant using Ollama and OpenWebUI
• Offline Wikipedia, Ghetesburg project & more using Kiwix
• File sharing & syncing using FileBrowser and Rclone
• Remote desktop usig RDP and Apache Guacamole

Recon & Security

• WiFi & Bluetooth reconnaissance with Bettercap, nmap, masscan and more
• Red team operations with aircrack, nikto, Metasploit and more
• Radio frequency recon using SDRAngel
• ADS-B plane tracking with tar1090

License

This project is licensed under the MIT License.