# orbcomm-rx

> orbcomm-rx demodulates and decodes Orbcomm VHF Subscriber Transmitter downlinks. Its documented signal uses SDPSK at 4.8 kbps on carriers between 137 and 138 MHz, carrying satellite position, orbital elements, channel information and encrypted user messages.

- Type: Tool
- Targets: Protocol
- Category: Protocol analysis tools
- Relationship: Foundation tool
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/sam210723/orbcomm-rx>
- Primary source: <https://github.com/sam210723/orbcomm-rx/blob/0f861523ea45eedf03978ba4a66ace1af6eae5c4/README.md>
- Catalog page: <https://awesomerea.org/resources/orbcomm-rx/>
- Record JSON: <https://awesomerea.org/resources/orbcomm-rx/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/orbcomm-rx/index.md)

## Requirements & limits

- **Prerequisites:** Orbcomm STX downlink signals are the input.
- **License:** No licence file is listed in the repository.

## Primary sources

1. <https://github.com/sam210723/orbcomm-rx/blob/0f861523ea45eedf03978ba4a66ace1af6eae5c4/README.md>

## More in Protocols

- [Meteor LRPT Decoder](https://awesomerea.org/resources/metlrpt/index.md) · Tool
- [open-appleremote: Siri Remote protocol reconstruction](https://awesomerea.org/resources/open-appleremote-case/index.md) · Case study
- [GAMEKB-K17: reconstructing a macropad configuration protocol](https://awesomerea.org/resources/gamekb-k17-case/index.md) · Case study
- [cooler-lcd: a Thermalright display protocol implementation](https://awesomerea.org/resources/cooler-lcd-case/index.md) · Case study
- [NJFE: a Soulear camera protocol bridge for desktop inspection](https://awesomerea.org/resources/njfe-ear-camera-bridge-case/index.md) · Case study
- [ultimate2: 8BitDo controller configuration protocol and Linux client](https://awesomerea.org/resources/8bitdo-controller-hid-case/index.md) · Case study

## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.