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This is a project to develop an Open Source reference design for a 1500 watt solid state linear amplifier for 10 through 160 meters by K6IF

Constructing a high-power solid-state amplifier for HF operations presents unique challenges, particularly when aiming for significant output like 600 watts. This project details an amplifier design employing **Motorola MRF150** FETs, a common choice for their robust performance in RF power applications. The design emphasizes achieving substantial power output, a critical factor for effective DXing and contesting, where every decibel can make a difference in signal propagation and readability. While specific circuit diagrams or construction details are not directly presented on the current page, the mention of MRF150 FETs points towards a design that would typically involve push-pull configurations, impedance matching networks, and robust power supply considerations to handle the high current demands. Such amplifiers are often built with an eye towards linearity and efficiency across the HF bands. Amateurs pursuing similar high-power solid-state projects often share insights on thermal management, intermodulation distortion, and component sourcing, all vital for a stable and reliable amplifier capable of delivering 600 watts into a proper antenna system.

The 60 Watt linear amplifier is simple all solid state circuit using power mosfet IRF840.

G3WZT John Matthews project of a 600 Watt solid state linear amplifier for the 6 meters band

A solid state linear based on EB104 Motorola Engineering Bulletin by Helge Granberg. It uses 4 MRF150 FETs in push-pull parallel to acheive 600 Watts from about 6 Watts drive

6-Meter Solid-State 100W Linear Amplifier complete documentation German and English

Understanding Solid State Linear Amplifiers

Makers of the worlds smallest automatic solid state HF amplifier Expert 1K-FA, Expert 2K-FA and Expert 1.3K-FA

Not a project yet, but very theoretical thoughts about very practical amplifiers!