Teletype repairmen and data communications professionals almost always carried pocket and wallet reference cards listing the codes, character positions, and signal parameters for the machines they serviced. They were issued by manufacturers, telephone companies, and training programs — often trade-show giveaways or badges of honor from technical schools. The collection below preserves a sample of these cards. Contributions are welcome; contact W2TTY.
Copyright © George Hutchison W7TTY & Bill Bytheway K7TTY. All rights reserved.
Model 28 Teletype Code Card
Teletype Model 28 code card — Baudot ITA2 character table
Teletype Corporation 50th Anniversary Code Card
Commemorative code card issued for the Teletype Corporation’s 50th anniversary
Model 35 TypeBox Code Chart
Character code chart for the Teletype Model 35 TypeBox print mechanism
Canadian Pacific — Canadian National Telecommunications Code Card
CP/CN Telecommunications code reference card
Model 28 TypeBox Code Chart
Character code chart for the Teletype Model 28 TypeBox print mechanism
Mergenthaler Composition Systems Code Card
Mergenthaler Linotype Company code reference for composition systems
General Electric Service USASCII Code Chart
GE Service division ASCII code reference chart
Western Union 1968 ASCII & Five-Level Codes
Back — ASCII code table
Front — Five-level Baudot and ASCII comparison
United Kingdom Post Office — International Telegraphs Five Unit Slip Reading
British Post Office ITA2 five-unit code slip-reading reference
Telecom Australia — International Telegraph Code No. 2
Australian ITA2 (International Telegraph Alphabet No. 2) reference card
Telecom Australia — International Alphabet No. 5
Australian IA5 (ASCII) reference card
Model 33/35 ASCII
Side A
Side B
Model 32 BAUDOT
Side A
Side B
TermiNet 300 Data Communications Printer
Side A
Side B
Western Union Keyboard & 5-Channel Tape Codes
Side B — 5-channel tape code chart
Side A — keyboard layout
Pulse Communications, Inc.
Side B
Side A
CNCP Telecommunications
Side B
Side A
Northern Electric NE-32 Teleprinter
Side B
Side A
CNCP Telecommunications System Training — EBCDIC/ASCII
Side B
Side A
CNCP Telecommunications System Training — EIA Modem
Side B
Side A
Stone Straw Corporation
Stone Straw Corporation teletype code card