Xiegu GPA100 HF Linear Amplifier 100W, 1.8–54MHz

Xiegu GPA100 HF Linear Amplifier

The Xiegu GPA100 is a compact, all-solid-state 100W HF linear amplifier covering 1.8 to 54MHz, designed to boost QRP transceivers to full legal power with clean, low-distortion output. Optimised for use with Xiegu rigs including the G90, X6100, X6200 and the Icom IC-705, it supports both automatic and manual band switching with ALC integration. A bright LCD display provides real-time monitoring of power, SWR, temperature, voltage and current — making it equally at home in the shack or out in the field.

Key Features

• 100W output (80W on 6m) from low-power QRP input — clean, stable signal for SSB and digital modes
• Auto and manual band switching — seven bands (1.8–50MHz) with dedicated hardware buttons and status LEDs
• LCD display showing output power, SWR, band, mode, voltage, current and temperature in real time
• Smart protection: guards against high SWR, overheating, overcurrent, overpower and low efficiency
• ALC support for seamless integration with compatible transceivers
• Lightweight and portable — suitable for shack, portable and field operation
• Compatible with Xiegu G90, X6100, X6200 and Icom IC-705

Technical Specifications

• Frequency Range: 1.8–54MHz
• Max Output Power: 100W ±1dB (<29.7MHz) / 80W ±1dB (50–54MHz)
• Overall Gain: 14dB ±1dB (<29.7MHz) / 12dB ±1dB (50–54MHz)
• Spurious Suppression: ≥50dB
• Supply Voltage: 12.0–15.0V DC (negative ground)
• Standby Current: 300mA max
• TX Current: 25A max
• Max Operating Temperature: ≤55°C