The Amplifier Research 800A3 is a solid-state, air-cooled broadband amplifier delivering 800 watts minimum continuous wave power across 10 kHz to 3 MHz. This self-contained unit accepts a maximum input of 1.0 milliwatt for rated output and provides 60 dB minimum gain. The digital control panel enables local and remote operation via IEEE-488, RS-232, and USB interfaces, with real-time displays of forward and reflected power plus internal status monitoring.
– Technical Specifications
• Power Output: 800 W CW minimum
• Frequency Range: 10 kHz to 3 MHz
• Input for Rated Output: 1.0 mW maximum
• Gain (maximum setting): 60 dB minimum
• Harmonic Distortion: −20 dBc maximum at 400 W output
• Mismatch Tolerance: Full rated power to 6.0:1 VSWR; above 6.0:1, limited to 400 W reflected power
• Modulation Support: AM, FM, and pulse modulation reproduction within linear power specification
• Primary Power: 85–137 VAC / 180–264 VAC, 47–63 Hz, 2500 W maximum draw
• RF Connectors: Type N female (input and output)
• Cooling: Forced-air with internal fans
• Dimensions: 50.3 × 34.0 × 55.1 cm
• Weight: 36.4 kg
– Key Features
• Selectable output impedance matching (12.5, 25, 50, 100, 200, 400 Ω) via internal transformer
• Hot-switching capability using high-voltage/high-current vacuum relays for impedance changes without shutdown
• RF output level protection with integrated circuitry
• Gain control adjustment
• Front panel keylock for operation mode control
• Power-factor-corrected universal input switching supplies
• Operates without damage or oscillation across any source and load impedance combination
– Typical Applications
Standalone RF testing and amplification, EMC testing, and component characterization across the ELF to MF frequency bands. Configurable as a sub-amplifier in multi-stage 1500 W or 5000 W system architectures.
– Compatibility & Integration
Remote control via IEEE-488, RS-232, and USB. Back panel buss interface connectors support system integration.
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