1940's DeForest's Training, Three Complete Volumes, 100's of new Products, Pics
£73.74
Lessons 1 through 20 in each. The green ones are TRA-1 through 20, Tubes-Receivers, Amplifiers.The brown ones are RRT-1 through 20, Radio Reception and Transmission. The green Lessons are TRA-1 through 20, Tubes-Receivers, Amplifiers.
