Srs-4 Satlab -
The Satlab SRS-4 is purpose-built to fit seamlessly into heavily constrained CubeSat and SmallSat configurations. Enclosed in a rugged, protective , it protects delicate RF electronics against electromagnetic interference (EMI) and radiation in low Earth orbit (LEO).
This company specializes in professional-grade geospatial measurement equipment for land surveying, construction, and marine applications. Based in Sweden, they provide a full stack of hardware and software solutions for high-precision positioning and 3D mapping, competing with industry giants like Trimble and Leica Geosystems.
The intended users are , Civil Engineers , and GIS Professionals . Users are expected to have technical knowledge of coordinate systems, geodesy, and basic surveying principles.
The transceiver offers a versatile range of configurations to suit various mission profiles: : Transmitter : 2200 to 2290 MHz. Receiver : 2025 to 2110 MHz. Modulation Schemes : TX : BPSK, QPSK, and 8PSK. RX : BPSK and QPSK. srs-4 satlab
Understanding where the SRS-4 fits requires comparing it directly to its predecessor, the lower-power Satlab SRS-3 . Satlab SRS-3 Satlab SRS-4 Low-power TM & TC High-speed, heavy-data downlink Max Symbol Rate 512 kbps Tx / 128 kbps Rx Up to 5 MBd Tx & Rx Modulation Types Fixed BPSK / QPSK BPSK, QPSK, and 8PSK Max Output Power 30 dBm (1W) 33 dBm (2W) High-Speed Serial Standard IO Prepared for future LVDS support Mass ~190 grams Unit Price Range ~€15,810 ~€20,390 Summary of Benefits for Mission Designers
A particularly important safety feature for on-orbit operation is the . This timer must be reset periodically via a telecommand (typically every 24 hours). If it expires, the system automatically reboots to safe fallback settings, protecting the satellite from becoming unresponsive due to incorrect configuration.
Delivered via CAN-bus and RS-422 interfaces, allowing seamless plug-and-play communication with standard onboard computers (OBCs) and power systems. The Satlab SRS-4 is purpose-built to fit seamlessly
It includes a safe, on-orbit software upgrade mechanism. Operators can load newer firmware images directly to the radio while in space, extending the operational life of the mission. Summary of Core Specifications Specification Frequency Range 2.025 to 2.29 GHz (ITU S-Band) Data Rate Range 1 to 100 Mbps Symbol Rate Up to 5 MBd (Tx and Rx) Modulation Support Downlink: BPSK, QPSK, 8PSK | Uplink: BPSK, QPSK RF Output Power 0.1 to 1.99 W (Up to 33 dBm) Receiver Sensitivity Security Encryption AES-256-GCM Standard Protocols CCSDS, CSP, IP Routing Physical Interface CAN-bus, RS-422, Ethernet Form Factor Enclosure PC/104 Milled Aluminum
: Typical power consumption is roughly 1.5W (RX) and 10.8W (full TX at 33 dBm). Software & Security
Full-duplex high-speed S-band transceiver. Based in Sweden, they provide a full stack
The is a high-performance, full-duplex S-band transceiver developed by Satlab A/S specifically for high-speed data transfers on micro- and nano-satellites . Boasting a Technology Readiness Level of 9 (TRL-9) and substantial flight heritage since its release, the SRS-4 operates as a cutting-edge Software Defined Radio (SDR) tailored for the demanding environments of modern small satellite missions. Technical Overview & Architecture
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: Primarily used for downloading large data sets, such as high-resolution images or video, from small satellite platforms.
