NuPower Xtender™ VU4GX01 VHF/UHF Bidirectional Amplifier

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The NuPower Xtender™ VU4GX01 VHF/UHF Bidirectional Amplifier module is a small, broadband, high-performance RF embedded OEM amplifier that generates 4 watts of linear RF power across the 225 to 512 MHz frequency range.

The bidirectional amplifier is ideal for extending the communication range of half-duplex transceivers with constant-envelope waveforms (i.e. PSK- and FSK-based modulations, such as SOQPSK and GFSK), and generates 10 Watts of RF transmit power. The module accepts a +5 dBm input level and provides 35 dB of transmit gain, all while operating with 30% or better power efficiency at most frequencies. In receive mode, the NuPower Xtender offers a low noise figure of 3.5 dB and incorporates a low noise amplifier that provides 15 dB of gain.

The NuPower Xtender features manual transmit / receive (T/R) mode selection, coupled with an extremely fast T/R mode switch time of 2 μS.

With a small form factor (3.3 cubic inches) and state-of-the-art Gallium Nitride (GaN) power amplifier device technology, the NuPower Xtender VHF/UHF Bidirectional  Amplifier module is ideal for broadband RF telemetry and communication systems that require reliability and minimal size, weight, and power consumption (SWaP).

P/N: NW-BA-VU-4-GX01



Frequency Range 225 MHz to 512 MHz Size 2.34″ x 2.34″ x 0.61″
(L x W x H)
RF Output Power 4 W (Linear)
16 W (Psat)
Weight  1.92 oz.
RF Gain 35 dB (typ)
2nd Harmonic -13 dBc


Module Efficiency 25% Operating Temperature -40 to +85 °C
Nominal Input Drive Level +5 dBm Storage Temperature -55 to +85 °C
Maximum Input Drive Level (no damage) +10 dBm
Supply Voltage +10 to +32 VDC


Current Consumption 1.6 A@ +28 VDC (typ) Classification  5A991.G
RF Connectors SMA (female)
Interface Connector 15-pin Micro-D (socket)

VHF & UHF Bidirectional Amplifier OEM

•  Accessory Kit, which includes Fan-Cooled Heatsink and Upgraded Interface Cable
•  Harmonic Filter Module
•  Upgraded Interface Cable Assembly Banana Plug Termination
•  Heatsink with Integrated Fan

•  Unmanned Aircraft Systems (UAS) –
Group 2 & Group 3
•  Unmanned Ground Vehicles (UGV)
•  Unmanned Surface Vehicles (USV)
•  Broadband RF Telemetry
•  RF Communication Systems
•  Software Defined Radios
•  Test Labs