To build a complete communication system, the SRS-4 is often paired with other components. One notable accessory is the , designed specifically to work with the SRS-4 (and SRS-3) transceiver. This passive module allows the satellite to use a single antenna for both transmission and reception, saving space and mass, with typical insertion loss of only 0.2 dB.
The is a flight-proven, full-duplex S-band transceiver engineered specifically for high-speed Telemetry, Tracking, and Command (TT&C) as well as data downlink operations on micro- and nano-satellites . Developed by European aerospace company Satlab A/S —and widely integrated via major small satellite distributors like NanoAvionics —the SRS-4 represents a massive leap forward from standard low-power radios, offering a Technology Readiness Level (TRL) of 9 and global flight heritage since 2021.
Unlike simple transmitter modules, the SRS-4 operates in mode, meaning it can transmit and receive data simultaneously without compromising performance. This is critical for missions that need to receive commands while concurrently downloading mission data. 2. Key Technical Specifications and Performance srs-4 satlab
+---------------------------------------------+ | Satlab SRS-4 Radio | | | | +------------------+ +--------------+ | | | Space Operations | | Encryption | | | | CCSDS & FEC | | AES-256-GCM | | | +--------+---------+ +------+-------+ | +------------|--------------------|-----------+ | Space Link | v v +---------------------------------------------+ | Internal Satellite Bus | | | | [CAN-bus] [RS-422] [Ethernet] | | CSP Traffic CSP Traffic IP Routing | +---------------------------------------------+ 1. CubeSat Space Protocol (CSP)
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). To build a complete communication system, the SRS-4
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Built on a polyimide PCB for thermal performance, the SRS-4 is housed in a milled aluminum enclosure This is critical for missions that need to
The core of the Satlab SRS-4 centers on its agile SDR architecture. This hardware configuration allows satellite operators to configure transmission parameters dynamically while in orbit, reducing mission risk and adjusting to changing ground networks.
Acting as a data relay for low-power ground sensors.
: Efficient operation with a typical RX-only consumption of 1.5 W and a combined RX+TX consumption of 10.8 W at maximum output. Advanced Features for Satellite Missions
The module houses internal power amplifiers (PA), low-noise amplifiers (LNA), and custom-tailored transmit/receive filters. This self-contained layout eliminates the need for active external RF components, requiring only simple, passive S-band antennas mounted to the spacecraft body. High-Speed RF Performance & Modulation