Protocol specification for the M17 Project.

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README.md

M17_spec

M17 Project is a modern, digital radio protocol built by hams, for hams. This repository contains the specification describing it exhaustively, from top to bottom. It is still a work in progress, meaning that this repository is meant to be updated now and then. After a few years of development, almost all of the changes are just to supplement the specification with new functions or improve the document.

The specification can be conveniently browsed here.

Part I - Air Interface

M17 RF Protocol: Summary
Glossary
Physical Layer
- 4FSK generation
  - Preamble
  - Bit types
  - Error correction coding schemes and bit type conversion
Data Link Layer
- Stream Mode
- Packet Mode
- BERT Mode
Application Layer
- Amateur Radio Voice Application
- Packet Application

Part II - Internet Interface

M17 Internet Protocol (IP) Networking
- Standard IP Framing
- Control Packets

Appendix

Address Encoding
- Callsign Encoding: base40
- Callsign Formats
Randomizer sequence
Convolutional Encoder
Golay Encoder
Code Puncturing
Interleaving
BERT Details
KISS Protocol
- References
- Glossary
- M17 Protocols
- KISS Basics
- Packet Protocols
- Stream Protocol
- Mixing Modes
- Implementation Details
File Formats

README.md

M17_spec

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