The Cubecom XTX X-band Transmitter is a compact, flight-proven nanosatellite X-band transmitter with a Cubesat Kit PC/104 form factor.

The transmitter implements the DVB-S2 standard up to MODCOD 21 which supports QPSK, 8PSK, and 16APSK modulation at a symbol rate of 25 Msps.

The use of the DVB-S2 standard (concatenated encoding optional) enables compatibility with commercial-of-the-shelf (COTS) satellite demodulators.

The XTX X-band Transmitter also has a maximum encoded data rate of 100 Mbps, making it suitable for space applications that require a high data rate downlink.

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Last updated: 2023-11-22

XTX X-band Transmitter



< 120 g
< 96 mm
< 90 mm
input voltage
7 to 20 V
power consumption
< 15 W
frequency range
8.025 to 8.4 GHz
rf power
< 2 W (33 dBm)
spurious response
< 60 dBc (TBC)
> 20 dB
symbol rate
2.5 to 25 MBd
data interface
CAN 2.0 (telemetry and control)
I2C (telemetry and control)
SpaceWire (high speed data interface)
LVDS (high speed data interface)
operating temperature
-20 to 60 C


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