HARDWARE / PRODUCTAdded 1 Jul 2026

K/Ka-Band Uplink Transceiver UDC300

ReliaSat
K/Ka-Band Uplink Transceiver UDC300

The UDC300 is a fully integrated standalone K/Ka-band uplink transceiver with up to 2.5 GHz instantaneous bandwidth, supporting ground segment and airborne applications with an on-board frequency synthesizer in a stackable enclosure.

Typed specifications46 values

Discloses 7 of 8 fields engineers filter by in this category (category median 2).

Frequency band
K
RX · datasheet p.1 K RX 17-21 GHz (K/Ka-band in document)  |  Ka TX  |  Ka TX 27-30 GHz
Mass
430 g
nom. · total mass ~0.430 kg · datasheet p.2 430 g  |  430 g Total Mass
Frequency range
1 000–5 000 MHz
RX IF output frequency range · datasheet p.2 17 000–21 000 MHz RX input  |  17 000–21 000 MHz RX input frequency range  |  1 000–4 000 MHz TX IF input frequency range  |  27 000–30 000 MHz TX output  +1
Envelope (L×W×H)
95.89 x 90.17 x 38.15 mm
Mechanical Enclosure Dimensions · datasheet p.2 95.89 x 90.17 x 1 PCB dimensions
TX RF output power
0.1 W
TX Output Linear Power · datasheet p.2
Supply voltage
7–42 V
RX · datasheet p.2 7–42 V Supply voltage range (RX)  |  7–42 V supply voltage range (TX and RX)  |  7–42 V TX
Power consumption
7.5 W
max · DC power (RX) · datasheet p.2 12 W max · DC power (TX)  |  7.5 W max · RX  |  12 W max · TX
Operating temperature
-40–85 °C
datasheet p.3
Function
transceiver
stand-alone transceiver, wideband up/down converter for modem… · datasheet p.1
Link use
ground terminal
designed for either on ground segment or an airborne environment · datasheet p.1
RF connector
SMP
IF signal connectors, edge mounts · datasheet p.2 other IF signal, SMP edge mounts  |  SMPM RF Connector Types  |  SMPM RF, edge mount  |  other RF, SMPM edge mount
Power draw, receive
7.5 W
max · receiver DC power <7.5 · datasheet p.2
Power draw, transmit
12 W
max · transmitter DC power <12 · datasheet p.2
Noise figure
2.5 dB
max · receiver, <2.5 · datasheet p.2
Connector
DC flying leads (DC power); 6-pin Pico-Lock (current sensor, temperature sensor, synthesiser lock, DC power enable)
datasheet p.2 6-pin Pico-Lock Connector Current Sensor, Temperature Sensor, Frequency Synthesiser Loc…  |  DC flying leads DC Connector Types  |  SMP edge mounts IF Signal Connector Types  |  SMPM edge mount RF Connector Types
Satellite class
CubeSat
form factor requirement: Cube Sat · datasheet p.2
Channel bandwidth
250 000 kHz
instantaneous bandwidth · datasheet p.1 250 000 kHz max · up to 250 MHz of instantaneous bandwidth
RF gain
30 dB
RX conversion gain (printed 'extended 50 dB with SSPA' also i… · datasheet p.2 30 dB TX conversion gain (extended 50 dB with SSPA)  |  50 dB TX conversion gain extended with SSPA

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 supplier8 lines, in the manufacturer's own wording
Rx frequency (downlink)
17-21 GHz
Tx frequency (uplink)
27-30 GHz
Tx if frequency
1-4 GHz
Rx if frequency
1-5 GHz
Tx output power
>20 dBm
Instantaneous bandwidth
Up to 2.5 GHz
Enclosure
Stackable
Lo clock
High-precision on-board, external reference capable

About

The UDC300 is a fully integrated standalone uplink transceiver module designed for K/Ka-band communications systems. It operates as a wideband up/down converter suitable for both ground segment and airborne environments, offering up to 2.5 GHz of instantaneous bandwidth – significantly broader than most competing solutions – for high-throughput LEO satellite applications.

The module incorporates an on-board frequency synthesizer and high-precision LO clock that can serve as a reference for cascaded modules or lock to an external system reference, providing design flexibility for complex multi-channel ground station architectures. Its stackable enclosure enables modular system builds where multiple UDC300 units can be combined to form multi-channel or multi-beam ground terminals.

With TX covering 27-30 GHz (uplink) and RX covering 17-21 GHz (downlink), IF ports of 1-4 GHz (TX) and 1-5 GHz (RX), and output power exceeding 20 dBm, the UDC300 can be used standalone or combined with a modem or SDR to implement full-function K/Ka-band satellite communication for LEO constellation ground networks and airborne SATCOM platforms.

Documentation

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

Source: reliasat.com ↗

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