Features

Supported hardware

• RTL-SDR
• PlutoSDR
• AirSpy mini, AirSpy R2 via spyserver
• Raspberry PI (2,3,4)
• Any Debian/Ubuntu compatible PC

Supported software

• Raspbian OS
• Ubuntu: bionic, focal. Other versions not tested, but most likely will work.
• Debian: stretch, buster, bullseye. Other versions not tested, but most likely will work.

Satellites

• 303+ satellites
• Mostly cubesats on low earth orbit
• Weather satellites like Meteor-M 2-2 and NOAA
• Support newly launched satellites via special integrations

Modulation

• 2-FSK/GFSK/GMSK
• BPSK
• QPSK
• APT
• LoRa

Framing

Mostly coming from jradio:

Scheduling

• Automatic
• Fair schedule between different satellites
• Observations are load-balanced between devices of the same type
• Each device can be configured for a specific frequency range. Only observations of that range will be scheduled on that device
• Parallel observations on a single device - sdr-server
• Minimum and guaranteed elevation when scheduling observations

Web UI

• Select satellites to listen
• Configure integrations
• Configure RTL-SDR device. Using multiple RTL-SDRs or devices of different type require manual configuration via file ~/.r2cloud
• Can be controlled via REST API
• Monitor health of the system

Housekeeping

• (If configured) Reload list of satellites from SatNOGS and leosatdata.com every hour
• Reload TLE from r4uab.ru, celestrak.org
• Retry upload to leosatdata.com if integration is enabled
• Retry decoding if terminated in emergency
• Flexible retention to keep historical observations: based on number of observations or expected disk usage

Observations

• Parallel observations on multiple devices
• Support rotators
• Resume observation on restart
• Decode frames into JSON if appropriate decoder exist in jradio