From the book - If a coil of insulated wire surrounds a piece of soft iron and a direct current is sent through the coil, it is called an electro­magnet. The space around the coil is the magnetic field. When the current is increased the magnetic field increases. When the current is decreased the strength of the field is re­duced. If the current be reversed, the field is reversed. When an alternating current is sent through the coil the magnetic field alternates. The cycle becomes the phenomenon on which all electromagnetic fields and waves can trace their principle to - without this basic phenomena, we would not have radio…………

Chapters Include:

:: Chapter 1 - Radio Principles

:: Chapter 2 - Physics of Sound

:: Chapter 3 - Radio Fundamentals and Ohm’s Law

:: Chapter 4 - Review Questions and Answers

:: Chapter 5 - Radio Batteries

:: Chapter 6 - Electrical Measuring Instruments

:: Chapter 7 - Power Supply Units

:: Chapter 8 - Resistors, Inductors, and Condensers

:: Chapter 9 - Transformers

:: Chapter 10 - Broadcast Stations

:: Chapter 11 - Principles of Radio Telephony

:: Chapter 12 - Vacuum Tubes

:: Chapter 13 - Radio Receivers

:: Chapter 14 - Radio Circuit Diagrams

:: Chapter 15 - Receiver Construction

:: Chapter 16 - Control Systems

:: Chapter 17 - Loud Speakers

:: Chapter 18 - Antenna Systems

:: Chapter 19 - Automobile Antennas

:: Chapter 20 - Phonograph Pickups

:: Chapter 21 - Public Address Systems

:: Chapter 22 - Aircraft Radio

:: Chapter 23 - Marine Radio Equipment

:: Chapter 24 - The Radio Compass and Principle of Operation

:: Chapter 25 - Radio Beacons

:: Chapter 26 - Automatic Radio Alarm

:: Chapter 27 - Short Wave Receiver Principles

:: Chapter 28 - Coil Calculations / 28A - Frequency Modulation (F.M.)

:: Chapter 29 - Electronic Television (Q & A)

:: Chapter 30 - Radio Testing

:: Chapter 31 - The Cathode Ray Oscillograph

:: Chapter 32 - Radio Trouble Pointers and Interference Suppression (Q & A)

:: Chapter 33 - Photoelectric Cells

:: Chapter 34 - Phototube Amplifiers

:: Chapter 35 - Phototube Relays

:: Chapter 36 - Application of Electron Devices

:: Chapter 37 - Underwriter's Standards

:: Chapter 38 - Radio Data (Symbols, Abbreviations, and Units)

:: Over 900 pages!

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