Systems / SDR Transceiver

SDR Transceiver

Software-defined radio for telemetry, telecommand, and payload downlink.

EOS-SDR-DSH-08 / Flown on LOGSATS-2

SDR Transceiver flight unit render
Tuning range
100 kHz - 3.8 GHz
Transmit power
33 dBm (2 W) with PA
Data rate
Up to 1 Mbps
Mass
250 g

The EOS Orbit SDR Transceiver pairs a Linux command and data handling unit with an LMS7002M wideband front end. It tunes continuously from 100 kHz to 3.8 GHz, transmits up to 2 W through the integrated power amplifier, and moves data at up to 1 Mbps with optional LDPC and BCH coding and DVB-S2 framing.

The radio is defined in software. The same hardware ships configured for telemetry and telecommand, high-rate file downlink, or receive-only missions. On LOGSATS-2 the design flew configured as a 1090 MHz ADS-B receiver, collecting aircraft position broadcasts from orbit.

  • Continuous tuning, 100 kHz to 3.8 GHz
  • BPSK, QPSK, FSK, and GFSK modulation
  • Transmit up to 33 dBm (2 W) with PA control
  • Receive sensitivity to -95 dBm
  • Optional FEC (LDPC + BCH) and DVB-S2 framing
  • Quad-core Arm Cortex-A53 CDH running Linux, programmable in C, C++, and Python
  • Watchdog, over/under-voltage, ESD, and EMI protection
  • Optional PPS input for precise time-tagging

Radio

Radio IC LMS7002M wideband SDR front end
Frequency 100 kHz - 3800 MHz
Transmit power 33 dBm (2 W) max with PA
Receive sensitivity -95 dBm
Bandwidth 15 MHz max
Modulation BPSK, QPSK, FSK, GFSK
Data rate Up to 1 Mbps
RF connectors MMCX (TX, RX)

Electrical

Supply 5.0 V nominal
Power, idle 2.25 W typical
Power, receive 3.5 W typical
Power, transmit 8 W typical
Operating temperature -20 to +80 °C

Physical

Size 92 x 94 x 15.6 mm
Mass 250 g
Mounting PC-104 stack, 4x M3
Enclosure Aluminum 6061
Thermal vacuum 8 cycles, -20 to +60 °C, < 10⁻⁵ Torr, 1 h dwell at extremes
Radiation TID evaluated to 20 krad (Si), SEE tolerance, latch-up protection
Random vibration 14.1 gRMS, 20-2000 Hz
Functional burn-in 72-96 h continuous operation in vacuum
SDR Transceiver mechanical drawing
92 x 94 x 15.6 mm / 4x M3 / dimensions in mm

Flown on LOGSATS-2 as a 1090 MHz ADS-B receiver. 440 days of orbital operations.

Commission this system

Write to contact@eosorbit.com with your mission parameters. The engineering team responds with configuration options, lead time, and test documentation.

Contact engineering

EOS-SDR-DSH-08 / datasheet on request