Tube Type Transmitters 1920-1980

Tube Type Transmitters 1920-1980, by Eugene Ripen, is the second edition of Tube Type Transmitter Guide 1922-1970. It is a catalog of nearly 1000 models of transmitters, linear amplifiers, transceivers, modulators, tuners, VFOs and other amateur transmitting equipment.  A brief description of the model, including date, tubes, power output, etc varies from model to model. A small background is provided for some companies. Both major and smaller, less known, manufacturers are listed.