General Information

Serial #

9-045211

Part Number

1

Total Parts

2

AKA

N/A

Patents

N/A

General Description

FERROUS METAL CASING WITH HARDBOARD BACK/ METAL & SYNTHETIC FRONT PANEL/ GLASS? SCREEN/ SYNTHETIC KNOBS/ METAL & SYNTHETIC WORKING PARTS

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

79.1 cm

Width

62.5 cm

Height

56.5 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Computing Technology

Category

Digital peripheral devices

Sub-Category

N/A

Manufacturer

AKA

Electrohome

Country

Canada

State/Province

Ontario

City

Kitchener

Context

Country

Canada

State/Province

Ontario

Period

1979-1985

Canada

This type of television receiver was developed and used in the development of Canada's Telidon videotex system. It was also used as part of field trials. This unit possibly used at Canadian Communication Research Center Shirley's Bay. The Telidon program began on August 15, 1978 and ended on March 31, 1985.

Function

This television receiver was used as a videotex display monitor on early Telidon systems.

Technical

This television was modified by Electrohome in order to be used in Telidon field trials. It was adapted to provide access to individual red, green, blue (RGB) video information and external Composite Video signals in addition to standard TV broadcast. The television also has a woodgrain finish metal casing. Unlike a standard television, the VIDEOTEK 25 C41832 is a high voltage device due to the high voltage required for Telidon system equipment. As it was not until 1962 that the Canadian Electrical Code required grounded three-prong outlets for all new homes, this was a problem for Telidon as field trials demonstrated that about half of Canadian homes lacked ground protection, which make high voltage Telidon equipment a safery risk. In 1983, the North American Presentation Level Protocol Syntax (NAPLPS) graphics language develop from the Canadian Telidon system was formalized, ratified and adopted as a world standard for graphics transmission by computer.

Area Notes

Unknown

Details

Markings

BILINGUAL BLUE & WHITE DECAL READING 'MFD. BY/ ELECTROHOME Limited/ KITCHENER ONTARIO CANADA N2G 4J6/ F.C.C. DATA-MODEL/ NAME VIDEOTEK-25 NO. C41832/ CHASSIS C41AHO SERIAL 9-045211/ MANUFACTURED MARCH 28 1979 FINISH WALNUT/ V 120 A 01.2 HZ. 60'/ DECAL READING 'ASSET NUMBER/ 16746/ CRC SHIRLEY BAY'

Missing

N/A

Finish

WALNUT WOODGRAIN FINISH ON CASING/ BLACK & GREY FRONT PANEL/ BLACK & METALLIC KNOBS/ GREY POWER CORD

Decoration

'ELECTROHOME IN RAISED METAL LETTERING ON FRONT/ RED GREEN & BLUE MFR'S SYMBOL ON FRONT/ METALLIC SYNTHETIC TRIM ON CONTROL PANEL/ WHITE LETTERING FOR CONTROL FUNCTIONS