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50 Watts PEP, 30-88 MHz, Multiband, Automatic Band-Switching


The Model AR-50S is a portable, lightweight, fully automatic band-switching RF booster amplifier for multiband VHF Tactical Radio equipment supporting legacy, proprietary and emerging waveforms.  The amplifier is a sub-banded version of the JITC certified AR-50 multiband product and covers the frequency band of 30-88 MHz. High speed auto switching filters assure harmonic suppression and SINCGARS compatibility.  The amplifier includes power supply Voltage Spike Suppression, a DC/DC converter for wide DC input range, RF sensing, T/R switching, Automatic Level Control (ALC), automatically switched harmonic filter bands (DAMA capable).  Protections against antenna mismatch, over-temperature and accidental polarity reversal are provided.  The amplifier is comprised of a rugged aluminium case.  Optional interface coaxial cables and shock mounting plate are available.

The specifications listed below apply to the AR-50S family of amplifiers unless otherwise noted. For ordering, see datasheet for detailed information for specific model names.

Frequency Range 30-88 MHz
Power Output 50 Watts CW nominal; 50 W PEP with 80% AM modulation; < 10% distortion typical
Input Power Range CW: 1-20 W < 5 Watts CW typical for 50 Watts Output; Input Protection for up to 20 W CW
Input Power Range AM 1.5 Watt average (3-5 W PEP) for 50 W PEP output at 80% modulation
RF Keying Sensitivity Minimum input power to guarantee RX to TX Switch
< 1 Watt typical
T/R & Filter Switchover Time SINCGARS, legacy and modern modulations 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
Spurious Outputs Better than – 70 dBc
Rx LNA Gain 12 dB typical
Rx LNA Noise Figure 2 dB typical
Power Requirement 12-36 VDC filtered and transient protected for 12 or 24 volt vehicle systems or dual xx90 batteries
Current < 7.5 Amps @ 24 V typical