# Datasheet: Tactical DTN Relay

## Product Overview
* **Tagline:** Store-and-Forward Resilient Mesh Relay
* **Recommended for:** Defense Procurement, Field Operations, Disaster Recovery, and disconnected industrial networks.

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## Core Differentiators
* **Store-and-Forward Mesh Routing:** Buffers packets locally and hops them opportunistically over transient links (Bluetooth, Wi-Fi, serial, or radio) until backhaul is reached.
* **Fountain Coding Packetization:** Recovers lost data packets without requiring retransmission requests, maximizing throughput on high-loss channels.
* **PRoPHET Routing Algorithm:** Calculates probabilistic delivery metrics based on past node encounters to optimize next-hop selection.

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## System Requirements

### Hardware Specs
| Component | Minimum | Recommended (Production) |
|-----------|---------|-------------------------|
| **CPU** | Any x86_64 or ARM64 (Raspberry Pi compatible) | Multi-core ARM/x86 (for dense mesh routing) |
| **RAM** | 256 MB | 512 MB |
| **Disk** | 1 GB | 16 GB+ (for local packet buffering store) |

### Software & Environment
* **Supported OS:** Linux (Debian/Ubuntu/CentOS), Windows 10+, macOS.
* **Runtimes:** None required (ships as compiled Go/Rust standalone binaries).
* **Supported Radios:** LoRa modules (SX1276/SX1262), serial telemetry radios (900MHz), standard Bluetooth 4.2+, Wi-Fi.

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## Performance Snapshot & Appendix
* **Packet Loss Resiliency:** Maintains data integrity across channels with up to 70% physical packet loss using fountain coding.
* **Buffer Storage Management:** Automatically drops low-priority expired packets when buffer exceeds 90% disk space capacity.
* **Hardened Security:** Optional AES-GCM encrypted headers and authenticated routing tables prevent spoofing attacks.