SRS-4 Full-duplex High-speed S-band Transceiver

The Satlab SRS-4 is a full-duplex S-band transceiver designed for high-speed data transfer on micro- and nano-satellites.

The transceiver operates on the ITU space operations S-band frequencies with BPSK, QPSK and 8PSK modulation and CCSDS recommended channel coding, enabling integration with both independent and commercial ground station networks.

Features

Variable transmit symbol rate up to 5 MBd
BPSK, QPSK and 8PSK transmit modulation
BPSK and QPSK receive modulation up to 5 MBd
Run-time configurable convolutional and/or Reed-Solomon forward error correction
Adjustable output power up to 33 dBm with power monitoring and regulation
CAN-bus and RS-422 interfaces using CubeSat Space Protocol (CSP)
Ethernet interface using IP
AES-256-GCM link-layer encryption and authentication
PC/104 form factor aluminum enclosure
Delivered with support library for easy integration
Fully on-orbit software upgradable

Key Parameters

Parameter	Specification
Transmitter frequency	2200 to 2290 MHz
Transmitter modulation	BPSK/QPSK/8PSK, 100 kBd to 5 MBd
Transmitter power	20 to 33 dBm
Receiver frequency	2025 to 2110 MHz
Receiver modulation	BPSK/QPSK, 100 kBd to 5 MBd
Receiver sensitivity	-122 dBm (
Input voltage	5.1 to 28.8 V
Typical power consumption (6 V input, 20℃)	RX: 1.5 W (5 MBd) RX+TX: 10.8 W (5 MBd, 33 dBm output)
Operating temperature	RX: -40℃ to +85℃ TX: -40℃ to +70℃
Dimensions	93.0 mm × 87.2 mm × 17.5 mm
Mass	253 g

Additional Resources

Datasheet
Parasolids CAD model
STEP AP214 CAD model
Firmware and client library
Satlab Control application
GNU Radio blocks

Customization

Custom hardware and software requests can often be accommodated. Please see the R&D section