NuPower Xtender™ 12B04A-03 L-Band Bidirectional Amplifier

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The NuPower Xtender ™ 12B04A-03 L-Band Bidirectional Amplifier module is a small, broadband, high-performance RF amplifier that provides 16 watts of RF output power from 1.435 to 1.525 GHz.

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 16 Watts of RF transmit power. In receive mode, the NuPower Xtender offers a low noise figure of 3.5 dB and a low noise amplifier that provides 13 dB of gain. The module accepts a +5 dBm input level and provides a minimum of 37 dB of transmit gain, all while operating with 30% or better power efficiency at most frequencies.

The NuPower Xtender features the option of manual transmit / receive (T/R) mode selection or automatic transmit sensing, coupled with an extremely fast T/R mode switch time of

With a small form factor (6.9 cubic inches) and state-of-the-art Gallium Nitride (GaN) power amplifier device technology, the NuPower Xtender 12B04A-03 is ideal for broadband RF telemetry and communication systems that require reliability and minimal size, weight, and power consumption (SWaP).

P/N: NW-BA-12B04A-03



Frequency Range 1435 MHz to 1525  MHz Size 3.00″ x 2.00″ x 1.16″
(L x W x H)
RF Output Power 14 W (min)
16 W (typ)
Weight  5.8 oz.
RF Gain 35 dB (typ)
2nd Harmonic -13 dBc


Module Efficiency 30% Operating Temperature -40 to +60 °C
Nominal Input Drive Level +5 dBm Storage Temperature -55 to +85 °C
Maximum Input Drive Level (no damage) +10 dBm
Supply Voltage +11 to +32 VDC


Current Consumption 2.2 A@ +28 VDC (typ) Classification  ITAR Controlled
RF Connectors SMA (female)
Interface Connector 9-pin Micro-D (socket)

•  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

•  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