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Systems / LoRa Module

LoRa Module

Single-channel LoRa transceiver for space-to-ground IoT links.

EOS-LORASGW-DSH-02 / Flown on LOGSATS-2

LoRa Module flight unit render
Frequency
137 - 525 MHz
Sensitivity
-141 dBm
Transmit power
18 dBm
Mass
230 g

Overview

The EOS Orbit LoRa Module is a single-channel LoRa transceiver for space-to-ground IoT links. An STM32F411 handles command and data handling while an SX1278 front end covers 137 to 525 MHz with sensitivity to -141 dBm and spreading factors SF7 through SF12.

Power draw stays inside a tight budget: 0.6 W transmitting, 0.15 W receiving, 0.05 W idle. The module talks to the bus over CAN, RS-485, UART, or I2C, and supports CCSDS-compatible framing or lightweight custom protocols depending on the mission.

Features

  • LoRa spread spectrum, plus FSK, GFSK, MSK, GMSK, OOK
  • 137 - 525 MHz with custom frequency configurations
  • Sensitivity to -141 dBm, transmit 18 dBm
  • Spreading factors SF7 to SF12, up to 300 kbps
  • 0.6 W TX / 0.15 W RX / 0.05 W idle
  • CAN and RS-485 command interfaces
  • Watchdog, short-circuit, over/under-voltage, ESD, and EMI protection
  • CCSDS-compatible or custom lightweight framing

Specifications

Radio

Radio IC SX1278 LoRa front end
Frequency 137 - 525 MHz
Transmit power 18 ±1 dBm
Sensitivity -141 dBm
Spreading factor SF7 - SF12
Data rate Up to 300 kbps

Electrical

Supply 5.0 V nominal
Power, transmit 0.6 W typical
Power, receive 0.15 W typical
Power, idle 0.05 W typical
Operating temperature -40 to +85 °C

Physical

Size 92 x 94 x 19.1 mm
Mass 230 g
Mounting PC-104 stack, 4x M3
Enclosure Aluminum 6061

Qualification

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

Mechanical

LoRa Module mechanical drawing
92 x 94 x 19.1 mm / 4x M3 / dimensions in mm

Heritage

Flown on LOGSATS-2. Launched January 15, 2025, on a SpaceX Falcon 9. 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-LORASGW-DSH-02 / datasheet on request