Electronics and Communications Technology for DIY'ers

• Jump to: Electronics
• Jump to: Communications

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Electronics

Components

• Free Electronics eBooks
• Blonder-Tongue Labs
• Resistor Color Codes
• Ceramic Capacitor Number Codes
• The Transistor Museum

~ Solid State Component Specification Sheets

• All About Magic Eye Tubes
• Vacuum Tube Data

Lamps

• Pilot Lamp DataTables
• History of Christmas Lights
• Worlds oldest known working lightbulb
• Who invented the lightbulb that Edison claimed?
• History of Light Emitting Diodes
• Experiments with Alternate Currents of High Potential and High Frequency
• The Tesla Foundation of North America
• Volta and the "pile"

Projects

• General Info about CDV Instruments

~ Popular modern equipment

• Electronics Science Fair Projects and Experiments
• Video on building your own Triode Vacuum Tube

~ Build your own Cathode Ray Tube

• Build your own Mechanical Television
• Solid state low noise balanced microphone preamp
• Commodore C64 Ethernet adapter

~ "Wet String" bidirectional serial communications (just for fun)

• Covox Speech Thing
• Troubleshooting and Repair of Hand Held Remote Controls

~ Universal Remote Control Codes

• Interesting electric projects and displays
• Build your own Hydogen Booster

~ Instructions for another Hydogen Booster

• Build an Infra-Red Digital Camera
• Build a VLF Sudden Ionospheric Disturbance (SID) detector

1. Search database of Sams Photofact repair schematics^$
• Free Radio Schematics
• More Schematics
2. Source for Service and Owners Manuals^$

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Communications

Mediums

• History of Telecommunications
• Introduction to microphones

~ Older Home Studio microphone choices

• Low Cost Shotgun Microphone Comparison
• Introduction to Chinese ribbon microphones
• Johnny Carsons microphone (just for fun)
• Listening Test - Can you tell the difference between microphones?
• The RecordingHacks Microphone Database
• Mixing Desk Basics
• Jitter
• Unofficial CD Text FAQ
• A Guide to Bipolar, Dipolar, & Direct-Radiating Monopole Surround Speakers

• Teletype Machines

~ Telex

• NADCOMM Museum
• Books in Morse Code
• Procedure for Radio Communication
• Maritime Radio

~ Tune and listen to a Web-controlled radio^$

• Broadcast Radiostation Locator^$

~ High Fidelity AM Reception

~ NOAA Weather Radio

• Personal Radio Services

~ Index of Wireless Services

• Who invented the radio that Marconi claimed?
• History of Russian Radios
• History of Boomboxes
• Public Radio Fan^$
• TuneIn to live radio online^$
• A classic military radio receiver

• The Radio League of America
• ARRL Affiliated Clubs
• Cross-pistol for stringing antenna wires
• Historically important publications

• Q codes
• 10 codes (*.pdf)

• Early Radio History
• Early Television History
• Television in the 1920's

~ The story of Charles Francis Jenkins (*.pdf)

• History of Color Television
• TV (and FM) Antenna Guide^$
• DTV Converter Box

~ CATV - TV - FM Frequencies

• Free-to-Air Satellite TV

~ Satellite Arc

~ Eastern Satellite Arc

• RV Satellite TV

~ RV Internet Access

• Local TV Programming Availability^$
• FCC Over-the-Air Reception Devices Rule

• Soundcard Interfacing Schemes
• RadioFax
• Revisiting Slow-Scan Television
• ATV

The Phone System

• History of the Bell System

~ The Telecommunications Act of 1996

• How the Telephone Number Was Invented
• Telephone EXchange Name Project
• Tools for Phone Numbers
• Free 411 service

• How to bypass automated phone systems^$

~ National Do Not Call registry^$

~ Junk FAX relief

• Mechanical Telephone Switching
• Ericofon telephones

~ How to build a Touch Tone Pad

• Public Videophone Booths in the 1930's! (*.pdf)

• Get a Free anonymous phone number

~ Caller ID Spoofing

• Florida Telecommunications Relay, Inc.

~ CapTel

• Get a Free wireless phone for emergencies
• Compare Cell Phone Carriers
• GSM vs CDMA

~ iDEN

• The Most Popular Phone in the World

• Text Messaging Guidelines (*.pdf)
• Free TextMarks service

Radio Frequencies

• Old Radio Frequency Books
• Advanced Crystal Radio Books

• Frequency allocation overview
• Longwave activity
• Activity from 150Khz to 30Mhz

~ 10 Meter Information

• VHF & UHF activity^$

~ VHF-UHF QSO real time maps^$

• 2 Meter FM Channelized Frequencies

~ PL (CTCSS) Tones

• Amateur Liscence Frequencies

~ Bandplans

~ RTTY Subbands

• The Digital Ham Radio Revolution
• Amateur Radio Call Sign Numerical Prefixes (*.pdf)

~ World Amateur Prefixes

• Naturist Amateur Radio Club (just for fun)

• License Free (part-15) Broadcasting (NO content restrictions!)

~ Low-Power, Non-Licensed Transmitter FAQ and Frequency Table (*.pdf)

• License Free Low Power Radio Service (may only be used for specific one-way Broadcasts)
• License Free R/C Frequencies (may only be used for one-way Radio Control Broadcasts)

~ R/C Frequencies FAQ

• License Free HF Citizens Band

~ CB FAQ

~ The CB Gazette

• License Free VHF Multi-Use Radio Service

~ MURS FAQ

~ MURS Antenna FAQ

• License Free UHF Family Radio Service

~ FRS FAQ

• License Free VHF Marine (may only be used for watercraft operations)

~ VHF Marine Radio FAQ

• License Free VHF Aviation (may only be used for aircraft operations)

~ Listen to archived Air Traffic Control radio

• How to obtain the optional Restricted Radiotelephone Operator Permit
• Requirements for other FCC commercial operator licenses
• Requirements for the FCC amateur operator licenses

• Smart Meter RF Dangers

~ Example Smart Meter Refusal Letters

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