Amplifier Research 125S1G6 Solid-State RF Amplifier

Overview

The Amplifier Research 125S1G6 is a solid-state, Class A broadband RF amplifier designed for demanding applications requiring instantaneous bandwidth, high gain, and excellent linearity. Self-contained and air-cooled, it operates from 0.7 to 6 GHz and delivers a minimum of 125 watts of RF power. The unit features both benchtop and rack-mount configurations, with comprehensive remote control capabilities via multiple interfaces.

Key Features

• 125 watts minimum RF power output across 0.7–6 GHz instantaneous bandwidth
• 52 dB minimum gain with continuous front-panel adjustment
• Class A solid-state design ensures low distortion and high linearity
• RF input leveling circuit protects amplifier stages from overdrive
• Over-temperature protection with automatic DC shutdown on thermal fault
• Digital front panel display indicates operating status and fault conditions
• Gain flatness of ±1.5 dB typical across frequency range
• 50-ohm input and output impedance with Type N female connectors
• Remote control via IEEE-488, RS-232, fiber optic, USB, and Ethernet interfaces

Applications

• Driver amplifier for wireless and communication component testing
• Multi-band test instrument for CDMA, W-CDMA, TDMA, and GSM modulation standards
• EMC testing applications requiring undistorted modulation envelopes
• Benchtop RF amplification in research and development