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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.

xx   LASER
xx   LIGHT

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.

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).

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