Ninety {90} volumes of the have been scanned and archived on this DVD. These 90 volumes of the National Radio Institute course for Radio Servicing contains information for just about every aspect of power supply, radio, and amplifier theory and servicing.

This course was a correspondence type and dated from 1948, it was offered to those interested in becoming a radio technician. The first 55 booklets are related to the actual course, the last 35 booklets are titled 'How to Make Money Fixing Radios'. The 90 booklets in this set range from 20 to 37 pages each and cover a wealth of topics and information regarding radios, amplifiers, PA systems (including guitar and jukebox amplifiers), early television and even how to repaired a marred cabinet! These 2575+ pages have been scanned using the gif format and can be viewed with most types of viewing or graphics software. Scanning was done using the 'line-art' mode and resolution was set at 300 dpi, no resizing has been done from the actual scans. By scanning at this higher resolution I found the printed page looks as good as the original that was scanned. Scanned pages are in GIF format and can be viewed and printed using most viewers. I've found that the picture viewer in Windows XP works great for viewing and printing these files.

:: Course covers the following:

:: Vol 1 - Introduction to Radio

:: Vol 2 - How Radio Programs Are Sent From The Studio To Your Home

:: Vol 3 - Simple Radio Circuits And Meters

:: Vol 4 - Getting Acquainted With Receiver Servicing

:: Vol 5 - Radio Resistors And How They Are Used

:: Vol 6 - Radio Coils And How They Work

:: Vol 7 - Radio Condensers And How They Work

:: Vol 8 - How Radio And Electronic Tubes Work

:: Vol 9 - How Tuned Circuits Function - Coupling Radio Circuits

:: Vol 10 - How Tubes Work In Typical Radio Stages

:: Vol 11- How Iron-Core Coils And Transformers Operate In Radio Circuits

:: Vol 12 - How Operating Voltages Are Obtained From An A.C. Power Line

:: Vol 13 - Special Power Supplies For Radio Equipment

:: Vol 14 - How Sounds And Scenes Are Converted Into And Reproduced From Electrical Signals

:: Vol 15 - Low-Frequency Amplifiers For Sound And Television Receivers

:: Vol 16 - Radio Frequency Amplifiers For Sound And Television Communication

:: Vol 17 - How Detectors Work In Radio And Television Receivers

:: Vol 18 - How Practical Requirements Changed Receiver Circuits

:: Vol 19 - Manual And Automatic Volume Controls

:: Vol 20 - How Signal Currents Are Kept In Correct Paths

:: Vol 21 - The Vacuum Tube As An A.C. Generator In Radio-Television Circuits

:: Vol 22 - Peak And Band-Pass R.F. Tuning Circuits

:: Vol 23 - How Broadcast, All-Wave, And Television Superheterodyne Receivers Work

:: Vol 24 - Tone Control, Volume Expansion And Noise Limiting Circuits

:: Vol 25 - Light-Sensitive Cells For Control Circuits

:: Vol 26 - How Sound Reproducers Operate

:: Vol 27 - How Cone-Type Loudspeakers Work

:: Vol 28 - Current, Voltage And Resistance Measurements

:: Vol 29 - Vacuum Tube Voltmeters - Cathode Ray Oscilloscopes

:: Vol 30 - Measurements At Audio And Radio Frequencies

:: Vol 31 - Tuning Indicators And Automatic Frequency Controls For Radio Receivers

:: Vol 32 - How To Use Circuit Diagrams And Locate Chassis Parts

:: Vol 33 - Behavior Of Radio Waves And Receiving Antennas

:: Vol 34 - Frequency-Modulated Signals - The F.M. Receiver

:: Vol 35 - Automatic Tuning Control Systems

:: Vol 36 - Professional Radio Servicing Techniques

:: Vol 37 - How To Isolate The Defective Section And Stage

:: Vol 38 - How To Isolate The Defective Circuit And Part

:: Vol 39 - Tuning Circuit Troubles - Alignment

:: Vol 40 - Using The Cathode Ray Oscilloscope In Radio Servicing

:: Vol 41 - How To Eliminate Hum, Squeals And Motorboating

:: Vol 42 - How To Eliminate Distortion - Servicing Loudspeakers

:: Vol 43 - Servicing Noisy And Intermittent Receivers

:: Vol 44 - Installation And Service Of Auto Radios And Farm Receivers

:: Vol 45 - Receiver Revitalization - Tube Testers

:: Vol 46 - How To Eliminate Man-Made Interference

:: Vol 47 - How To Choose And Install Replacement Parts

:: Vol 48 - Servicing Record Changers

:: Vol 49 - Introduction To Public Address

:: Vol 50 - Acoustics In Public Address Work

:: Vol 51 - P.A. Transmission Systems

:: Vol 52 - Commercial P.A. Systems

:: Vol 53 - Special P.A. Systems

:: Vol 54 - Maintenance Of P.A. Systems

:: Vol 55 - Requirements Of A Television System

:: Vol 56 - How Radio Receivers Are Serviced

:: Vol 57 - How To Use Radio Tools

:: Vol 58 - Equipment Used By Servicemen

:: Vol 59 - How To Remove and Overhaul The Chassis

:: Vol 60 - How To Restring Dial Cords And Set Push Buttons

:: Vol 61 - How To Test And Replace Resistors And Volume Controls

:: Vol 62 - How To Test And Replace Condensers

:: Vol 63 - How To Test Tubes

:: Vol 64 - How To Test And Replace Coils, Chokes, And Transformers

:: Vol 65 - How To Test And Repair Loudspeakers

:: Vol 66 - How To Inspect A Chassis For Surface Defects

:: Vol 67 - How To Put Up Antennas

:: Vol 68 - How To Repair Marred Radio Cabinets

:: Vol 69 - How To Start A Spare-Time Service Business

:: Vol 70 - How Much To Charge For Your Work

:: Vol 71 - How To Plan A Professional Workshop

:: Vol 72 - How Professional Servicemen Repair Receivers

:: Vol 73 - How Circuit Diagrams Are Used In Servicing

:: Vol 74 - How To Find The Defective Part With An Ohmmeter

:: Vol 75 - How To Find The Defective Part With A Voltmeter

:: Vol 76 - How To Fix A Dead Receiver

:: Vol 77 - How To Fix A Receiver That Hums

:: Vol 78 - How To Fix A Receiver That Squeals And Motorboats

:: Vol 79 - How To Fix A Noisy Receiver

:: Vol 80 - How To Fix A Receiver That Distorts

:: Vol 81 - How To Align Simple One-Band Receivers

:: Vol 82 - How To Align All-Wave Superheterodynes

:: Vol 83 - How To Fix A Weak Receiver

:: Vol 84 - How To Fix An Intermittent Receiver

:: Vol 85 - How To Service A.C.-D.C. Receivers

:: Vol 86 - How To Service Three-Way Portable and Battery Receivers

:: Vol 87 - How To Service Auto Receivers

:: Vol 88 - Recognizing Complaints Not Caused By Receiver Defects

:: Vol 89 - How To Service F.M. Receivers

:: Vol 90 - How To Go Into Full Time Servicing

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