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20 Watts PEP, 30-512 MHz, Tx/Rx Booster Amplifier with LNA

AR-20 (KT and KT-DUAL)

The Model AR-20 is a portable, lightweight, fully automatic band-switching RF booster amplifier for use with multi-band VHF/UHF Tactical Radio equipment employing legacy, proprietary and networking waveforms. The AR-20 produces 20 Watts from a 1 to 2 Watt PEP radio input and covers the frequency band of 30-512 MHz. The unit has a wide range input DC voltage allowing operation from a single battery (XX90 battery) or 12 and 28 VDC vehicle power sources.

It also includes Over Temperature Protection, RF sensing, T/R Switching, Automatic Level Control (ALC), Harmonic Filters, Co-Site filters and protection against antenna mismatch. The AR-20 also has a built-in internal LNA that can be switched on or off by the front panel switch to improve SATCOM receive performance. The amplifier is comprised of a rugged 4-piece aluminum case. Optional interface coaxial cables, DC battery cables, and kits for man-packing the amplifier are available.

Frequency Range 30-512 MHz
Power Output 20 Watts CW or PEP AM Modulation 1 kHz DOM 70%; < 10% AM distortion nominal
Input Power Range Nominal 2 W CW or PEP for full 20 W output. Up to 8 W without damage
RF Keying Sensitivity < 1 Watt CW typical
T/R Switchover Time < 25 μS
LNA Noise Figure < 2.5 dB typical
LNA Gain 12 dB plus Co-Site filter provides > 35 dB protection to the SATCOM receive channels
Modulation Compatible and tested with legacy and modern complex waveforms including AM, FM,
Duty Cycle Tactical operations
100% for networking modulations
Input/Output Impedance 50 Ω nominal
Input VSWR 1.5:1 nominal
Harmonics Better than – 60 dBc typical
Spurious Outputs Better than – 70 dBc
Power Requirement 12 to 35.5 VDC single XX90 battery, 12 and 28 VDC vehicles
Current 3.2 A Amps @ 24 V typical