6m/4m Discovery64 PA (GS35 tube)

QRO/QRP

The new version of the 6m/4m Discovery uses a Russian GS35 ceramic triode valve. This rugged triode valve will operate for long periods at an output up to 1500W. The output stage is a Pi/L network with a tuned input circuit. A heavy duty toroidal transformer and voltage doubler board produce 3600V. The valve is…

G3WOS Homebrew six meter 450w amplifier

QRO/QRP

G3WOS six meter, DXpedition solid state amp, packed and ready to go! I don’t think I could ever, hand on heart, recommend that anyone build a high power solid-state amplifier rather than one based on trusted triodes. However, if you read such excellent books such as the recently released ‘The VHF/UHF DX Book’ (DIR Publishing)…

HF SuperPacker Pro 100W Amp

New equipment

This project is designed to walk you through the build process step by step. We welcome first-time builders. Let us help you be all that you can be. The project parts and your efforts will provide you with a compact linear amplifier for use with QRP SSB/CW transmitters on the amateur bands 160 through 10…

Millinium HF Linear Amplifier

QRO/QRP

· Fully microprocessor controlled HF Linear Amplifier. · Conservative rated 1500 Watt no time limit RF power output in all modes. · T/R-QSK shift with RF output vacuum relay for high reliability. · AC input in single phase 190-264 Volt or dual phase 360-440 Volt internally manual switching. · 3,5 kW +++ Power Supply with…