# gr-elster

> gr-elster receives and decodes 902–928 MHz packets from Elster smart meters with a GNU Radio block and sample flow graphs. It dumps packets in hexadecimal, writes pcap files and extracts meter readings and hourly electricity usage. Its packet and payload interpretation remains partial.

- 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/argilo/gr-elster>
- Primary source: <https://github.com/argilo/gr-elster/blob/bd33fcda1fe3bedcacbeead9a35491a8183f515d/README.md>
- Catalog page: <https://awesomerea.org/resources/gr-elster/>
- Record JSON: <https://awesomerea.org/resources/gr-elster/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/gr-elster/index.md)

## Requirements & limits

- **Prerequisites:** GNU Radio and an SDR receiver are needed; the multi-channel flow graph targets RTL-SDR.
- **Testing evidence:** The author tested with Elster R2S hydro meters in the Ottawa area.
- **Limits:** Packet structure and payload decoding are incomplete.
- **License:** GPL-3.0 license.

## Primary sources

1. <https://github.com/argilo/gr-elster/blob/bd33fcda1fe3bedcacbeead9a35491a8183f515d/README.md>
2. <https://github.com/argilo/gr-elster/blob/bd33fcda1fe3bedcacbeead9a35491a8183f515d/COPYING>

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## 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.