The Satlab SRS-4 is a high-speed, full-duplex S-band transceiver designed for micro- and nano-satellites. With a Technology Readiness Level (TRL) of 9, it is flight-proven and fully qualified for orbital missions, having delivered over 100 units since 2021. Key Technical Specifications
The SRS-4 stands out for its high data rates and flexibility in modulation and frequency, making it suitable for complex space missions.
Frequency Range: Transmits at 2200 to 2290 MHz and receives at 2025 to 2110 MHz.
Data Throughput: Supports variable transmit symbol rates up to 5 MBd with BPSK, QPSK, and 8PSK modulation.
Output Power: Adjustable from 20 to 33 dBm (~2W) with active power monitoring and an Automatic Level Control (ALC) loop. Sensitivity: Features a receiver sensitivity of -122 dBm.
Interfaces: Integrated support for CAN-bus and RS-422 (using CubeSat Space Protocol) as well as Ethernet for IP routing. Physical & Environmental Features srs-4 satlab
Built for the harsh environment of space, the SRS-4 utilizes a ruggedized design to ensure long-term reliability.
Form Factor: Housed in a PC/104-compatible milled aluminum enclosure for EMI shielding and thermal stability.
Operating Temperatures: Reliable performance from -40°C up to +85°C (RX) and +70°C (TX).
Dimensions & Mass: Compact footprint at 93 x 87.2 x 18 mm, weighing approximately 253g.
Power Efficiency: Typical power consumption is roughly 1.5W (RX) and 10.8W (full TX at 33 dBm). Software & Security The Satlab SRS-4 is a high-speed, full-duplex S-band
The transceiver is designed for ease of integration and high-security communication.
Encryption: Features AES-256-GCM link-layer encryption and authentication for secure data transmission.
Upgradability: The system is fully on-orbit software upgradable, allowing for mission-critical updates after launch.
Developer Support: Delivered with a comprehensive C/Python support library to simplify the integration of space-link interfaces with the satellite bus. Availability & Pricing
The SRS-4 is available through manufacturers like Satlab A/S and partners like NanoAvionics. Unit Price: Approximately 20,390 EUR per unit. Mass & Power Budget (summary)
Lead Time: Standard manufacturing lead time is roughly 8 weeks.
Resources: Detailed technical data can be found in the Official SRS-4 Datasheet. SRS-4 Full-duplex High-speed S-band Transceiver - Satlab
Since "SRS-4" is not a widely recognized standard designation in the public satellite industry (unlike SRS-2, SRS-3, or SRS-5+ which typically refer to specific ground stations or proprietary protocols), it is highly likely you are referring to a specific project, a typo for a known satellite (like the SSTL SRS series), or perhaps a specific SatLab brand product integration.
However, assuming you are looking for an interesting technical write-up on the intersection of SatLab hardware and satellite ground station operations (SRS), here is a speculative technical brief on how such a system is architected today.
The scope covers the Satlab S4 hardware unit, the embedded firmware controlling satellite signal processing, and the accompanying control software (typically Android/iOS applications or PC suites). The system is designed for high-precision surveying, mapping, and construction applications.
The Satlab S4 functions as a "Rover" unit in surveying setups. It communicates with satellites in orbit and a "Base Station" (a known fixed point) to calculate coordinates with centimeter-level accuracy. The system comprises: