These pages will chronicle my first amplifier project. I will discuss overall motivation &  constraints, why various choices were made and the current status of the project.

This is not a project that has a very well defined start or end ( I will explain more a bit later). But after all,  it is the journey that is most interesting!

4-400A Tetrode HF Amplifier Project


Many parts of this project remain undocumented here. Too much time has passed and my interest has moved on to other things. However, the project was successful and the amplifier was used on the 80, 40 & 20 meter bands. It worked well for SSB, CW, & RTTY.

 Useful Information for Amp Builders

Amplifier Design

AMPS Mailing List Archive

Roll Your Own Power-Transformers    -  Link no longer active.

Peter W. Dahl Co.

Care And Feeding Of Power Grid Tubes - New Version   - Link updated 03-22-2010

Svetlana technical Bulletins  - Link no longer active

Screen Current and Grid Driven Tetrode Linear Amplifiers

Basic Tube Design  - Link no longer active