Key highlights

EnduroSat's S-Band Transceiver is a full-duplex satellite communication module that gives CubeSat and SmallSat operators dependable telemetry and telecommand (TMTC) with room to grow. Independent transmit and receive chains cover 2200–2290 MHz on the downlink and 2025–2110 MHz on the uplink, with configurable GFSK/GMSK/MSK modulation and data rates selectable anywhere from 0.1 to 125 kbps.

Link security and standards compliance are built in: AES-256 encrypted communication protects command and telemetry traffic, while CCSDS Unified Space Data Link Protocol support keeps the radio interoperable with established ground networks. Output power is commandable from 24 to 33 dBm in 1 dBm steps, so operators can balance link margin against the power budget on every pass, and automatic frequency correction over modulation deviation keeps the link locked.

At 246 g with a wide 10–30 V DC supply input, this S-band CubeSat transceiver is straightforward to accommodate on small platforms. High-efficiency amplifiers carry integrated electrical and temperature protections, control runs over dual CAN FD buses at 1 Mbps with CSPES, and the unit draws just 1.2 W at 12 V when idling in receive-only mode.

Applications

Primary TMTC (telemetry, tracking and command) link for CubeSats and SmallSats
Secure commanding for commercial and institutional LEO missions requiring AES-256 encryption
Missions interfacing with CCSDS-compliant ground station networks
Medium-rate housekeeping and payload telemetry downlink up to 125 kbps
Redundant or complementary link alongside UHF and X-band radios

Key features

Full-duplex operation:
Independent, integrated Tx and Rx channels for simultaneous uplink and downlink.
AES-256 encryption:
Encrypted communication for secure command and telemetry traffic.
CCSDS interoperability:
Unified Space Data Link Protocol support for compatibility with standard ground segments.
Configurable data rate:
Selectable from 0.1 to 125 kbps to match link conditions.
Adjustable RF output:
24 to 33 dBm output power, commandable in 1 dBm intervals.
Flexible modulation:
GFSK, GMSK or MSK, configurable in operation.
Automatic frequency correction:
Frequency correction over modulation deviation maintains link stability.
Protected amplifiers:
High-efficiency PAs with integrated electrical and temperature protections.
Low idle consumption:
1.2 W at 12 V in receive-only mode; 12 W maximum at 33 dBm transmit.
Wide supply input:
Operates from 10 to 30 V DC.
Compact and light:
246 g mass with Full Detent SMP antenna connectors for Tx and Rx.
Standardized control:
2x CAN FD at 1 Mbps with CSPES, plus a UART data interface and a dedicated interface for powering, debugging and programming.

Testing & qualification

Compliant with theCubeSat standard, DVB-S2/S2X, and CCSDS.

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Last updated: 2026-06-04