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75 Watts PEP, 30-512 MHz, Tx/Rx Booster Amplifier


The AR-75 is the second generation 75W portable, fully automatic band-switching RF booster amplifier for multi-band VHF / UHF Tactical Radio equipment employing legacy, proprietary and emerging waveforms.  The redesigned unit incorporates a slimmer, lighter, and lower-profile design than the predecessor.  The amplifier covers the frequency band of 30-512 MHz using six high-speed auto switching filters to assure harmonic suppression and is SINCGARS, HAVEQUICK, HPW, DAMA, IW, WNW, SRW and ANW2 compatible.  The amplifier includes power supply Voltage Spike Suppression, a DC/DC convertor for wide DC input range, RF sensing, T/R switching, Automatic Level Control (ALC), six automatically switched harmonic filter bands (DAMA capable), and protection against antenna mismatch and over-temperature.  Protection against accidental polarity reversal is provided.  The amplifier comprises a rugged 2-piece aluminum case.

Frequency Range 30-512 MHz
Power Output 75 Watts CW nominal; 75 W PEP with 70% AM modulation; < 10% distortion typical
Input Power Range CW: 1-20 W 5-8 Watts CW typical for nominal 75 Watts Output; Input Protection for up to 20 W CW
Input Power Range AM 2 Watt average (5-7 W PEP) for 70 W PEP output at 70% modulation
RF Keying Sensitivity 1 Watt typical
T/R & Filter Switchover Time SINCGARS, HAVEQUICK, HPW, DAMA, IW, WNW, SRW, and ANW2 capable
Insertion Loss Bypass Mode 1.0 dB typical
Insertion Loss Active RX 1.5 dB nominal
Modulation AM, FM, or PM, and Tactical communications waveforms
Duty Cycle Tactical operations
Input/Output Impedance 50 Ω nominal
Input VSWR 1.5:1 nominal
Harmonics Better than – 60 dBc typical. FULL high speed filter switching avoids interference in SINCGARS and HAVEQUICK – No filter gaps
Spurious Outputs Better than – 70 dBc
Rx LNA Gain 12 dB typical
Rx LNA Noise Figure 2 dB typical
Rx Co-Site Filter Band pass frequency 239-273 MHz, Out of band rejection 45 dB typical
Power Requirement 18-35.5 VDC filtered and transient protected for 24 volt vehicle systems batteries MIL-STD 1275 and 461 compliant DC-DC internal power supply
Current < 9.5 Amps @ 24 V typical