10 books
Build Your Own Low-Power Transmitters
Encyclopedia of Electronic Circuits, Volume 7
Encyclopaedia of Electronic Circuits
Video Scrambling & Descrambling
The Encyclopedia of Electronic Circuits, Volume 6
Incredible Audio and Video Projects You Can Build
Video, Stereo and Optoelectronics
Video Scrambling and Descrambling for Satellite and Cable TV
Encyclopedia of Electronic Circuits Volume 2
Encyclopedia of Electronic Circuits Volume 1