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.
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| 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, HPW, DAMA, IW, ANW2 and SRW |
| 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 |