Srs-4 Satlab Jun 2026

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.

: Downlinking dense imagery and multispectral data sets requires substantial bandwidth. The 5 MBd 8PSK capability allows developers to empty on-board flash memory quickly during brief ground station flyovers. srs-4 satlab

The SRS-4's performance is what truly sets it apart in a crowded field of space-ready radios. Its design priorities center on flexibility, security, and reliability. The 5 MBd 8PSK capability allows developers to

The SRS-4 uses a , which is a de facto standard for CubeSat and MicroSat components. This physical design simplifies mechanical stacking and interfacing with a satellite’s backplane. The RF connections are made via robust SMP connectors . The SRS-4 uses a , which is a

This choice by NTNU highlights the SRS-4’s suitability for a modern, complex satellite mission, where high downlink speeds and robust performance are non-negotiable. Furthermore, the European Space Agency (ESA) is using the SRS-4 as a foundation for its project, underscoring the unit's adaptability for future satellite-to-satellite communication networks.

The Satlab SRS-4 transceiver balances high-throughput capabilities with the strict power and weight budgets required by CubeSat platforms. Specification Details PC/104 standard, aluminum enclosure Dimensions & Weight 93 mm x 87.2 mm x 17.5 mm Transmit (Tx) Frequency 2200 MHz to 2290 MHz (ITU Space Operations) Receive (Rx) Frequency 2025 MHz to 2110 MHz (ITU Space Operations) Modulation Schemes Tx: BPSK, QPSK, 8PSK Data Rate Range 1 Mbps up to 100 Mbps (Symbol rates up to 5 MBd) Adjustable Output Power 20 dBm to 33 dBm (0.1W to ~2.0W) Power Consumption 1.5 W (Idle/Rx) to 10.8 W (Max Tx operational) Input Voltage 5.1 V to 28.8 V DC Operating Temperature -40°C to +85°C Architectural Design and Modularity