HARDWARE / PRODUCTAdded 30 Jul 2026

RADIOSAT Ka-Band Datalink Transmitter

PicoSaTs
RADIOSAT Ka-Band Datalink Transmitter

Sub-0.5U Ka-band downlink transmitter under 500 g reaching 4 Gbps, DVB-S2X with ACM up to 256 APSK.

Typed specifications53 values

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

Frequency band
Ka
Downlink · datasheet p.2
Mass
500 g
max · datasheet p.2 500 g max · < 500 g
Frequency range
25.5-27
Downlink · datasheet p.2 25 500–27 000 MHz Downlink
Envelope (L×W×H)
< 0.5 U (configurable)
datasheet p.1
TX RF output power
5 W
max · datasheet p.2 5 W max · RF output power, up to
Data rate
4 000 000 kbps
max · transmission · datasheet p.2 4 000 000 kbps max · TX, up to
Modulation
DVB-S2X with ACM (up to 256 APSK)
datasheet p.2 256APSK DVB-S2X with ACM, up to 256 APSK  |  8PSK  |  16APSK  |  32APSK  +3
Supply voltage
12–24 V
datasheet p.2 12–24 V input supply
Power consumption
70 W
max · datasheet p.2 70 W max · < 70 W
Data interface
SpaceWire
Data over (opt.) · datasheet p.2 other Data over SpaceFibre  |  SpaceWire Data over SpaceFibre (opt.)  |  SpaceWire optional, data  |  RS-422 optional, TM/TC  +9
Operating temperature
-20–70 °C
datasheet p.2
Function
transmitter
datasheet p.1
Link use
payload data downlink
Earth Observation data downlink · datasheet p.1
Link protocol
CCSDS
CCSDS packets over DVB-S2X (CCSDS 131.3-B) · datasheet p.1 proprietary RADIOSAT SDR  |  CSP System telemetry and control  |  DVB-S2X with ACM  |  CCSDS  +1
RF connector
SMP
gold plated · datasheet p.1
Connector
SMP gold plated RF connectors
datasheet p.2 Space qualified data and power connectors
Survival temperature
-30–90 °C
datasheet p.2 -30–90 °C non-operating
Satellite class
CubeSat
datasheet p.1 smallsat 100-500 kg
Duplex
simplex
transmitter only · datasheet p.1

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
Downlink
25.5 - 27 GHz
RF output power
Up to 5 W
Data rate
Up to 4 Gbps
Modulation and channel coding
DVB-S2X with ACM, up to 256 APSK
Volume
< 0.5 U
Mass
< 500 g
Power consumption
< 70 W
Input supply
12 V to 24 V
Interfaces
SMP gold plated RF connectors; telemetry and control with CSP over CAN (opt. Ethernet or RS422); data over SpaceFibre (opt. SpaceWire or Ethernet)
Operating temperature
-20 C to +70 C (non-operating -30 C to +90 C)
Qualification
Vibration and TVAC qualified by ECSS-E-ST-10-03C

About

A miniaturized transmitter designed for LEO CubeSat and small satellites for Earth observation and exploration data downlink applications. With a volume below 0.5 U and a mass below 500 g, the transmitter operates in Ka-band from 25.5 to 27 GHz and can reach up to 4 Gbps in transmission, making it unique in size and performance ratio.

The transmitter is compliant with DVB-S2X with ACM and up to 256 APSK, which makes it compatible with all the most common commercial ground station segments. It is equipped with the RADIOSAT SDR that allows customization of its protocols and waveforms up to 1 GHz instantaneous bandwidth.

It is compatible with CCSDS packets over DVB-S2X (CCSDS 131.3-B), supports in-orbit firmware and protocol reprogramming, and features redundant boot flash with automatic failover and watchdog timers.

Documentation

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

Source: picosats.eu ↗

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