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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.

LIGHT BEAM COMMUNICATION
sa   FIBER OPTICS
sa   INFRARED COMMUNICATION
xx   ELECTRONICS
xx   LASER
xx   LIGHT
xx   PHOTOELECTRIC DEVICE

Cyber Laser. Part 2. Build a laser receiver to experiment with laser communications. Est. cost: $50.
COMPUTERCRAFT Apr 1993 (v.3#4) pg. 62

Experimental circuits for transmitting and receiving signals via light beams.
CQ. THE RADIO AMATEUR'S JOURNAL Dec 1979 (v.35#12) pg. 38

A primer on optical communications. Part 1. A simple intensity-modulated analog light-wave transmitter and some basic LED driving principles.
CQ. THE RADIO AMATEUR'S JOURNAL Jan 1997 (v.53#1) pg. 54

A primer on optical communications. Part 2. Converting a simple intensity-modulated optical transmitter into a practical audio (speech) transmitter.
CQ. THE RADIO AMATEUR'S JOURNAL Feb 1997 (v.53#2) pg. 44

A primer on optical communications. Part 3. Optical receiving techniques. Building 2 different receivers.
CQ. THE RADIO AMATEUR'S JOURNAL Mar 1997 (v.53#3) pg. 102

A primer on optical communications. Part 4. Optical antenna techniques.
CQ. THE RADIO AMATEUR'S JOURNAL Apr 1997 (v.53#4) pg. 48

A primer on optical communications. Part 5. Fiber-optic communications.
CQ. THE RADIO AMATEUR'S JOURNAL May 1997 (v.53#5) pg. 38

Laser listener. How to use a lightbeam to eavesdrop on conversations taking place behind windows. How glass vibrations can be converted to sound.
ELECTRONICS EXPERIMENTERS HANDBOOK 1990 pg. 107

Light-beam communicator consists of a transmitter and receiver installed inside two tube-like assemblies. Full-duplex operation is supported (you can talk and listen at the same time). A high-intensity LED light source gives the unit a range of 0.5 miles. Est. cost: $98 (kit).
ELECTRONICS EXPERIMENTERS HANDBOOK 1991 pg. 37, 150

Light beam carries voice communication over 200 feet using modulated flashlight beam.
ELECTRONICS ILLUSTRATED Mar 1965 (v.8#2) pg. 64

Air Hop. Light beam communicator has an output power of about 10 milliwatts peak and 5 milliwatts average. It uses frequency modulation of a 50-kHz carrier and has a bandwidth of 300-3000 Hertz. Range is over one mile. Part 1. Theory of operation.
ELECTRONICS NOW Dec 1992 (v.63#12) pg. 51

Air Hop. Part 2. Construction.
ELECTRONICS NOW Jan 1993 (v.64#1) pg. 60

Laser experiments. Light-beam modulation and light-communications experiments.
ELECTRONICS NOW Jun 1996 (v.67#6) pg. 51
Added Info ELECTRONICS NOW Aug 1996 (v.67#8) pg. 10

Modulating a laser beam in order to transmit sound.
ELECTRONICS NOW Mar 1997 (v.68#3) pg. 73

Simple light beam communications demonstator shows how to "talk on a beam of light". Est. cost: $15.
ELEMENTARY ELECTRONICS #763 Winter 1965 pg. 110

Photo-transistor receiver and LED transmitter works on visible or invisible light, with or without fiber optics. This unit demonstrates the basic theory and circuitry.
ELEMENTARY ELECTRONICS Mar-Apr 1976 (v.16#2) pg. 61

Light beam communicator. Hand-held transciever allows line of sight communication up to 1000 meters. Estimated cost for two units: $100.
ELEMENTARY ELECTRONICS Nov-Dec 1980 (v.20#6) pg. 33

How lightwaves are changing communications. Includes schematics for simple lightwave transmitters and receivers.
MODERN ELECTRONICS [2] Oct 1984 (v.1#1) pg. 86

Audio amplifier experiments. Includes construction of a simple audio amplifier, underwater hydrophone, light-sensor/amplifier combinations, and a basic "photophone" system.
MODERN ELECTRONICS [2] Apr 1986 (v.3#4) pg. 66

High-sensitivity lightwave receiver and transmitter for experiments in lightwave communication.
MODERN ELECTRONICS [2] Oct 1990 (v.7#10) pg. 51

Experimenting with light-beam communications. Only a few simple components are needed to get started.
POPULAR ELECTRONICS [1] Apr 1975 (v.7#4) pg. 40

Talk over a sunbeam with a Photophone. Modern version of Alexander Graham Bell's sunlight communicator. Usable up to 1/2 mile. A small mirror is modulated by the voice. Reflected sunlight then becomes the carrier which is received by a large parabolic mirror and amplified.
POPULAR ELECTRONICS [1] Feb 1976 (v.9#2) pg. 54

The photophone centennial: 1880-1980. Includes tips on building your own photophone to transmit sound over a beam of reflected sunlight.
POPULAR ELECTRONICS [1] Apr 1980 (v.17#4) pg. 74

Circuit for an amplitude-modulated light-wave voice communicator transmitter and receiver. Build from inexpensive, readily available components.
POPULAR ELECTRONICS [1] May 1980 (v.17#5) pg. 103

Build a light-beam communicator. These transmitter and receiver circuits allow you to communicate over short distances using an ordinary flashlight.
POPULAR ELECTRONICS [2] Oct 1991 (v.8#10) pg. 41

Voltage regulator applications. (1) In-rush current limiter circuit keeps current at the rated operating level of the device to be protected. (2) Visible-light transmitter circuit. (3) Visible-light receiver circuit. (4) Using two common voltage regulators to vary both voltage and current. (5) Circuit to control a small DC motor or small lamp.
POPULAR ELECTRONICS [2] Mar 1992 (v.9#3) pg. 70

Light-beam communicator. Use the light from a high-intensity LED to communicate up to one-half mile. Est. cost: $98. Part 1.
RADIO-ELECTRONICS Jul 1989 (v.60#7) pg. 31, 56

Light-beam communicator. Part 2.
RADIO-ELECTRONICS Aug 1989 (v.60#8) pg. 52

Device to demonstrate the transmission of sound over a beam of light. One of several simple experiments.
SCIENTIFIC AMERICAN Jan 1973 (v.228#1) pg. 116