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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.


Ways to write secret messages.
BOYS' LIFE Jan 1965 (v.55#1) pg. 50

A look at the steps invloved in breaking a cipher. Includes a list of solution aids on common ending and beginning letters of words and letter patterns. Also includes a cipher problem and its solution.
BOYS' LIFE Nov 1974 (v.64#11) pg. 25

Make a secret cipher disk (code wheel). Convert words into letters and numbers.
BOYS' LIFE Apr 1981 (v.71#4) pg. 69

Snoop-proof secret codes.
BOYS' LIFE Sep 1981 (v.71#9) pg. 64

Invisible messages. The history of hidden writing, along with a recipe for "ink".
BOYS' LIFE Dec 1988 (v.78#12) pg. 72

Codemaster. The name code and invisible writing.
BOYS' LIFE Mar 1991 (v.81#3) pg. 48

Codemaster. The turning code and the password code.
BOYS' LIFE Apr 1991 (v.81#4) pg. 60

Codemaster. The Pinkerton code.
BOYS' LIFE May 1991 (v.81#5) pg. 53

Codemaster. The broken-up code and the fake Morse code.
BOYS' LIFE Jun 1991 (v.81#6) pg. 35

Codemaster: The unbreakable code.
BOYS' LIFE Jul 1991 (v.81#7) pg. 35

Codemaster. Francis Bacon code and Tick-Tack-Toe code.
BOYS' LIFE Sep 1991 (v.81#9) pg. 8

Codemaster. Grill code and Pig Latin.
BOYS' LIFE Oct 1991 (v.81#10) pg. 35

Codemaster. Morse Viking code.
BOYS' LIFE Nov 1991 (v.81#11) pg. 50

Codemaster. Ding-A-Ling (telephone) code and Prisoner's code.
BOYS' LIFE Dec 1991 (v.81#12) pg. 65

Codemaster. The Rail-Fence code.
BOYS' LIFE Apr 1992 (v.82#4) pg. 42

Codemaster. The mixed-up math code.
BOYS' LIFE May 1992 (v.82#5) pg. 56

Codemaster. The Shadow code.
BOYS' LIFE Jul 1992 (v.82#7) pg. 62

Codemaster. The crossword puzzle code.
BOYS' LIFE Aug 1992 (v.82#8) pg. 34

Codemaster. Caesar's code.
BOYS' LIFE Oct 1992 (v.82#10) pg. 37

Codemaster. The playing card code.
BOYS' LIFE Nov 1992 (v.82#11) pg. 41

Codemaster. The Ogham (Celtic) code.
BOYS' LIFE Dec 1992 (v.82#12) pg. 43

Codemaster. The Knot code (Morse code in disguise).
BOYS' LIFE Apr 1993 (v.83#4) pg. 48

Codemaster: The Line code.
BOYS' LIFE Jul 1993 (v.83#7) pg. 59

Codemaster. The Tic-Tac-Toe code.
BOYS' LIFE Sep 1993 (v.83#9) pg. 33

Codemaster. The Keyboard code.
BOYS' LIFE Oct 1993 (v.83#10) pg. 25

Codemaster. The secrets of snoop-proof secret writing. The brown fox code.
BOYS' LIFE Jan 1994 (v.84#1) pg. 34

Codemaster. The secrets of snoop-proof secret writing. The mix-up code.
BOYS' LIFE Feb 1994 (v.84#2) pg. 39

Codemaster. The secrets of snoop-proof secret writing. The pyramid code.
BOYS' LIFE Mar 1994 (v.84#3) pg. 40

Codemaster. The secrets of snoop-proof secret writing. The pinhole code.
BOYS' LIFE Apr 1994 (v.84#4) pg. 38

Codemaster. The secrets of snoop-proof secret writing. The alphabet code.
BOYS' LIFE May 1994 (v.84#5) pg. 39

Codemaster. The secrets of snoop-proof secret writing. The ruler code.
BOYS' LIFE Jun 1994 (v.84#6) pg. 27

Codemaster. The secrets of snoop-proof secret writing. The list code.
BOYS' LIFE Nov 1994 (v.84#11) pg. 39

Codemaster. The secrets of snoop-proof secret writing. The split-letter code.
BOYS' LIFE Dec 1994 (v.84#12) pg. 39

Codemaster. The window card code. Holes cut in paper are used to locate the secret message on a sheet full of words.
BOYS' LIFE Jan 1995 (v.85#1) pg. 31

Codemaster, The backward-forward code. Requires a simple "counting wheel" to decode.
BOYS' LIFE Apr 1995 (v.85#4) pg. 27

Codemaster. The map code. Pine trees in the map, with various branch configurations, are actually a coded message.
BOYS' LIFE Aug 1995 (v.85#8) pg. 36

Codemaster. The compass code. Using the cardinal directions (NSEW) to encode a message up to 24 different ways.
BOYS' LIFE Sep 1995 (v.85#9) pg. 25

Codemaster. The inside-out code.
BOYS' LIFE Oct 1995 (v.85#10) pg. 53

Codemaster. The telephone code. Using the letter/number combinations from a telephone dial.
BOYS' LIFE Dec 1995 (v.85#12) pg. 40

Codemaster. How to write messages using the Spike code, a version of the Morse code.
BOYS' LIFE Mar 1996 (v.86#3) pg. 37

Codemaster. The Double Dare code.
BOYS' LIFE Apr 1996 (v.86#4) pg. 37

Codemaster. The Scramble code.
BOYS' LIFE May 1996 (v.86#5) pg. 28

Codemaster. The Ice-Cream Bar code.
BOYS' LIFE Jul 1996 (v.86#7) pg. 35

Codemaster. The Pigpen code.
BOYS' LIFE Sep 1996 (v.86#9) pg. 13

Codemaster. The Date code.
BOYS' LIFE Nov 1996 (v.86#11) pg. 45

Codemaster. The Wheel code.
BOYS' LIFE Dec 1996 (v.86#12) pg. 39

Codemaster. The Curveball code.
BOYS' LIFE Apr 1997 (v.87#4) pg. 29

Codemaster. The Picket Fence code
BOYS' LIFE May 1997 (v.87#5) pg. 51

Codemaster. The Music code.
BOYS' LIFE Aug 1997 (v.87#8) pg. 35

Codemaster. The Black Box code.
BOYS' LIFE Nov 1997 (v.87#11) pg. 33

Codemaster. The hatch-mark code, a modern version of a script called Ogham used by the Celts.
BOYS' LIFE Feb 1998 (v.88#2) pg. 27

Codemaster. The paper clip code. A paper clip is used as a template to decode the message.
BOYS' LIFE Apr 1998 (v.88#4) pg. 39

Codemaster. The 24-hour code, a code which changes each day of the week.
BOYS' LIFE May 1998 (v.88#5) pg. 27

Codemaster. The triplet code.
BOYS' LIFE Jul 1998 (v.88#7) pg. 31

Codemaster. The hop-along code.
BOYS' LIFE Aug 1998 (v.88#8) pg. 27

Codemaster. The Symbol Simon code.
BOYS' LIFE Sep 1998 (v.88#9) pg. 33

Codemaster. The Baby Talk code.
BOYS' LIFE Oct 1998 (v.88#10) pg. 33

Codemaster. The QWERTY code.
BOYS' LIFE Nov 1998 (v.88#11) pg. 41

Codemaster. The doodle code. Morse code is hidden in simple sketches of flowers, leaves of grass, roof shingles, etc.
BOYS' LIFE Jan 1999 (v.89#1) pg. 19

Codemaster. The shield code. Codemaster Club membership card features a shield emblem that doubles a message decoder.
BOYS' LIFE Feb 1999 (v.89#2) pg. 41

Codemaster. The signature code. The name of the code writer is the key to decoding the message.
BOYS' LIFE May 1999 (v.89#5) pg. 29

Codemaster. The arrowhead code. A triangular shape with letters around the edge is the decoder for a secret message.
BOYS' LIFE Jul 1999 (v.89#7) pg. 21

Codemaster. The calendar code. The date on a message is the key to decoding.
BOYS' LIFE Oct 1999 (v.89#10) pg. 51

Codemaster. The flip-flop code.
BOYS' LIFE Jan 2000 (v.90#1) pg. 43

Codemaster. The dot code.
BOYS' LIFE Feb 2000 (v.90#2) pg. 30

Codemaster. The double-headed code.
BOYS' LIFE Mar 2000 (v.90#3) pg. 45

Codemaster. The one-time code.
BOYS' LIFE Jun 2000 (v.90#6) pg. 25

Codemaster. The humpty dumpty code.
BOYS' LIFE Sep 2000 (v.90#9) pg. 29

Codemaster. The shopping code.
BOYS' LIFE Nov 2000 (v.90#11) pg. 31

Codemaster. The cobra code.
BOYS' LIFE Jan 2001 (v.91#1) pg. 31

Codemaster. The animal code.
BOYS' LIFE Apr 2001 (v.91#4) pg. 17

Codemaster. The pinpoint code.
BOYS' LIFE Aug 2002 (v.92#8) pg. 55

Codemaster. The fake out code.
BOYS' LIFE Sep 2002 (v.92#9) pg. 18

Codemaster. The lucky number code.
BOYS' LIFE Oct 2002 (v.92#10) pg. 30

Codemaster. The escalator code.
BOYS' LIFE Dec 2002 (v.92#12) pg. 56

Codemaster. The line code.
BOYS' LIFE Jan 2003 (v.93#1) pg. 51

Codemaster. The star code.
BOYS' LIFE Feb 2003 (v.93#2) pg. 51

Codemaster. The tongue-twister code.
BOYS' LIFE Mar 2003 (v.93#3) pg. 55

Codemaster. The envelope code.
BOYS' LIFE Jul 2003 (v.93#7) pg. 52

Cryptography in the field. Part 1. A brief look at the history of encoding "secret" messages.
BYTE Mar 1979 (v.4#3) pg. 56

Cryptography in the field. Part 2. Using the pocket calculator to implement a field cipher.
BYTE Apr 1979 (v.4#4) pg. 144
Correction BYTE Aug 1979 (v.4#8) pg. 194

Morse code trainer. Morse code conversion program written in 6800 assembler code converts plain text into Morse code. A simple circuit attached to a computer interface converts the code into sound.
BYTE Dec 1979 (v.4#12) pg. 247

A BASIC computer program for home cryptography.
BYTE Apr 1982 (v.7#4) pg. 432

Public key cryptography. An introduction to a powerful cryptographic system for use on microcomputers. Includes demonstration programs written in BASIC.
BYTE Jan 1983 (v.8#1) pg. 198

The Bazeries 26/20 cylindrical cipher system is simulated by a BASIC computer program.
BYTE Jun 1983 (v.8#6) pg. 352
Correction BYTE Nov 1983 (v.8#11) pg. 642

Cipher via computer. Enciphering/deciphering program in Microsoft BASIC uses a keyword or phrase as the seed for generating a random-number series which is then used to encode (decode) a message.
BYTE Sep 1983 (v.8#9) pg. 403

Deciphering word games. Two BASIC programs that will help you solve cryptograms and anagrams.
BYTE Feb 1984 (v.9#2) pg. 383

Implementing cryptographic algorithms on microcomputers.
BYTE Oct 1984 (v.9#11) pg. 126

Morse code for beginners in amateur radio. Part 1.
CQ. THE RADIO AMATEUR'S JOURNAL Jun 1979 (v.35#6) pg. 58

Morse code for beginners in amateur radio. Part 2. Learning and using the code.
CQ. THE RADIO AMATEUR'S JOURNAL Jul 1979 (v.35#7) pg. 48

Method for sending perfect Morse code is described. Use of an electronic keyer from the beginning is one secret of good code sending.
CQ. THE RADIO AMATEUR'S JOURNAL Jul 1979 (v.35#7) pg. 58

Morse code for beginners in amateur radio. Part 3. Selecting code practice equipment. Charts illustrate the Morse code in Greek, Russian, Turkish, Japanese, American, Arabic and International Morse code.
CQ. THE RADIO AMATEUR'S JOURNAL Aug 1979 (v.35#8) pg. 51

Introduction to the PHILLIPS CODE for amateur radio novices. Part 1.
CQ. THE RADIO AMATEUR'S JOURNAL Nov 1979 (v.35#11) pg. 56

Introduction to the PHILLIPS CODE for amateur radio novices. Part 2.
CQ. THE RADIO AMATEUR'S JOURNAL Dec 1979 (v.35#12) pg. 35

Worldwide sources of Morse code practice. Part 1.
CQ. THE RADIO AMATEUR'S JOURNAL Oct 1980 (v.36#10) pg. 42

Worldwide sources of Morse code practice. Part 2. List of code transmissions, plus time and frequency standards for radio stations throughout the world.
CQ. THE RADIO AMATEUR'S JOURNAL Nov 1980 (v.36#11) pg. 64

Charts show eight worldwide codes, plus the international Morse code.
CQ. THE RADIO AMATEUR'S JOURNAL Dec 1980 (v.36#12) pg. 32

A BASIC program for the Apple computer that acts as a straight-key keyer. It corrects for poor duration of dots and dashes and makes sure that a minimum space is inserted between marks.
CQ. THE RADIO AMATEUR'S JOURNAL Feb 1983 (v.39#2) pg. 54

Super-C.W. Potentially error-free morse code. A new concept for computer-based Morse code that can be easily implemented.
CQ. THE RADIO AMATEUR'S JOURNAL Mar 1983 (v.39#3) pg. 58

Increase your CW speed. Some tips.
CQ. THE RADIO AMATEUR'S JOURNAL Oct 1987 (v.43#10) pg. 106

So you want to increase your code speed. A review of old ways to learn and polish code skills.
CQ. THE RADIO AMATEUR'S JOURNAL Dec 1987 (v.43#12) pg. 56

Semi-random code practice, a new approach for thirteen. Computer program helps you break the 13 words-per-minute "barrier" when learning Morse code.
CQ. THE RADIO AMATEUR'S JOURNAL Jul 1988 (v.44#7) pg. 52

Code and code-receiving practice tips for the newcomer to amateur radio.
CQ. THE RADIO AMATEUR'S JOURNAL Nov 1989 (v.45#11) pg. 86

The fine art of CW ragchewing and good CW operating practices in general.
CQ. THE RADIO AMATEUR'S JOURNAL Jan 1994 (v.50#1) pg. 28

Learn to copy CW the hard way. Includes a BASIC computer program to generate random CW cipher groups for practice.
CQ. THE RADIO AMATEUR'S JOURNAL Jan 1998 (v.54#1) pg. 30

"Junior Ham" station uses code on CB to practice for license.
ELECTRONICS ILLUSTRATED Mar 1964 (v.7#2) pg. 55

Morse code tutor computer program written in BASIC.
ELECTRONICS NOW Sep 1994 (v.65#9) pg. 69

Introduction to binary chain codes which are inherently "self-locating".
ELECTRONICS NOW Oct 1994 (v.65#10) pg. 76, 75

How to learn Morse code. Suggestions and teaching aids.
ELEMENTARY ELECTRONICS Sep-Oct 1966 (v.3#1) pg. 77

Getting your "BNEE." Fourth semester. Why morse code and tips on proper operating procedures for your station.
ELEMENTARY ELECTRONICS Mar-Apr 1979 (v.19#2) pg. 55

Use your computer to receive Morse code the easy way. Simple interface circuit and a BASIC language program will decode and print out Morse code messages up to 30 words-per-minute, depending on the speed of your printer. Software is written in Microsoft BASIC for a KIM system. Est. cost for interface: $17.
Correction KILOBAUD MICROCOMPUTING #25 Jan 1979 pg. 21

PIG LATIN. BASIC program will translate any line into pig latin equivalent. Example: The word SCRAM comes out as AMSCRAY.

Crack that code. Encipher and decipher secret messages with this Playfair cipher program written in BASIC for the Apple II.
KILOBAUD MICROCOMPUTING #52 Apr 1981 (v.5#4) pg. 64

Popping and pushing permutations in BASIC. AN elegant solution to unscramble word puzzles. Written for the PET, Apple, or TRS-80.
KILOBAUD MICROCOMPUTING #60 Dec 1981 (v.5#12) pg. 50

Morse code teaching program for an Apple computer allows the code speed and number of elements between characters to be set separately.
KILOBAUD MICROCOMPUTING Feb 1982 (v.6#2) pg. 130

Word Unscrambler program. A BASIC computer program that will list all possible permutations of the word given as input.
MICROCOMPUTING Jul 1982 (v.6#7) pg. 37

SCRAZZLE program for the IBM Personal Computer prints out all the possible combinations of letters which compose a given input word.
MICROCOMPUTING Oct 1982 (v.6#10) pg. 13

A BASIC program designed to assist in breaking a specific type of machine cipher.
MICROCOMPUTING #89 May 1984 (v.8#5) pg. 86

Morse code at 30 words per minute. A military instructor shares his advice on copying code.
POPULAR COMMUNICATIONS Dec 1993 (v.12#4) pg. 32

How to break the 10 words-per-minute Morse code barrier.
POPULAR ELECTRONICS [1] Jul 1974 (v.6#1) pg. 67

Introduction to computer codes. A look at binary, octal, hexadecimal and BCD (binary coded decimal) codes.
POPULAR ELECTRONICS [1] Apr 1976 (v.9#4) pg. 46

Secrets of the new amateur code exams. What recent changes have been made in the ham radio license exam and how to study for it.
POPULAR ELECTRONICS [1] Oct 1978 (v.14#4) pg. 56

Computer-aided Morse code practice. Computer program for a 6800 MPU-type microcomputer will produce perfect code at virtually any selected speed.
POPULAR ELECTRONICS [1] Dec 1979 (v.16#6) pg. 64

Designing with the 8080 microprocessor. Part 4. A typical program. Sample program converts Morse code to ASCII code.
POPULAR ELECTRONICS [1] Dec 1981 (v.19#12) pg. 74

Designing with the 8080 microprocessor. Part 5. Morse code hardware interface.
POPULAR ELECTRONICS [1] Jan 1982 (v.20#1) pg. 62

Designing with the 8080 microprocessor. Part 6. Conclusion. Programming the CPU module's ROM to operate the morse code receiver interface.
POPULAR ELECTRONICS [1] Feb 1982 (v.20#2) pg. 69

How to decipher secret messages. Home computers can assist in this job. How to modify TV typewriters to assist in such decoding.
RADIO-ELECTRONICS Dec 1977 (v.48#12) pg. 48

Morse code practice on your Commodore 64 computer. The computer sends 50 five-letter word groups in a row at any speed you select. The code is heard via the audio section of the computer or a TV set.
RADIO-ELECTRONICS Mar 1985 (v.56#3) pg. 15 (ComputerDigest)

An introduction to binary coding and its application to representing number and letters.
RADIO-ELECTRONICS Jan 1990 (v.61#1) pg. 12

Morse/RTTY detector. Let your computer decypher Morse code and radioteletype signals received via shortwave radio. Est. cost: $270. Part 1.
RADIO-ELECTRONICS Apr 1990 (v.61#4) pg. 33

Morse/RTTY detector. Part 2.
RADIO-ELECTRONICS May 1990 (v.61#5) pg. 49, 66