HARDWARE / PRODUCTUpdated 24 Jul 2026

Pulsar STX

AAC Clyde Space
Pulsar STX

The Pulsar STX is an S-band transmitter designed for CubeSats and SmallSats, offering reliable uplink and downlink capabilities for space missions.

Typed specifications43 values

Discloses 8 of 13 fields engineers filter by in this category (category median 3).

Frequency band
S
amateur · datasheet p.1 S commercial
Mass
100 g
max · datasheet p.2
Frequency range
2.4-2.45
PULSAR-STX-A · datasheet p.2 2.2-2.3 PULSAR-STX-C  |  2 400–2 450 MHz PULSAR-STX-A  |  2 200–2 300 MHz PULSAR-STX-C
Envelope (L×W×H)
96 mm (Length) x 90 mm (Width) x 16.9 mm (Height)
datasheet p.2
TX RF output power
24-30
datasheet p.2 0.251 W min · in 2 dB steps  |  1 W max · in 2 dB steps  |  1 W max · RF  |  0.251–1 W
Data rate
2 000 kbps
max · TX · datasheet p.1
Modulation
O/QPSK
datasheet p.1 QPSK  |  OQPSK  |  QPSK
Supply voltage
5 V
5 V alternative · datasheet p.2 5 V alternative  |  6–12 V
Power consumption
5 W
max · datasheet p.2 5 W max · maximum RF power output  |  5 W max · total, at maximum RF power output
Data interface
SPI
High-speed (payload data) · datasheet p.2 SPI high-speed SPI bus 4 MHz, payload data  |  I2C Low-speed (telemetry and control)  |  I2C low-speed I2C bus 400 kHz, telemetry and control  |  SPI payload data  +1
Operating temperature
-25–51 °C
datasheet p.2
Design lifetime
2 years
in LEO · datasheet p.2
Function
transmitter
datasheet p.1
Link use
payload data downlink
datasheet p.1
Link protocol
proprietary
network encoding scheme based on the IntelSAT IESS-308 specif… · datasheet p.1
RF connector
SMA
50 Ohm SMA connector · datasheet p.2
Connector
50 Ω SMA connector
datasheet p.2
Flight heritage
UKube-1 mission
datasheet p.1
Satellite class
CubeSat
datasheet p.1
Missions flown
1
datasheet p.1
Channel coding (FEC)
convolutional (Viterbi)
1/2 rate convolutional encoding (K=7) · datasheet p.2
Channel bandwidth
500 kHz
channel spacing · datasheet p.2
Board format
custom
datasheet p.2

Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.

As published by the supplier11 lines, in the manufacturer's own wording
Temperature
-25 to +51 C
Power
<5 W
Supply voltage
6 V-12V (5 V alternative)
Mass
<100 g
Tx SNR
20 dB
Frequency (STXC)
2.2-2.3 GHz
Frequency (STX)
2.4-2.45 GHz
RF power
24-30 dBm in 2 dB steps
Channel spacing
500 kHz
Spurious response
<-60 dBc
Design life
2 years in LEO

About

The Pulsar STX is an S-band transmitter developed by AAC Clyde Space, specifically designed for CubeSats and SmallSats. It is intended for space missions requiring reliable uplink and downlink communication. The product page also mentions a limited-time bundle offer, the PULSAR-HSTX Transmitter & Pulsar-SANT S-Band Antenna, suggesting the STX is a component of a broader communication solution. While specific features and detailed specifications are not provided directly on this page for the Pulsar STX itself, its context among other space-qualified communication components like the Pulsar-SANT antenna and various transceivers indicates its role in satellite communication systems.

Documentation

Need the full ICD, test reports or a specific revision? Ask the supplier directly.

Source: www.aac-clyde.space ↗

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