General Information

Serial #

N/A

Part Number

1

Total Parts

13

AKA

RECEIVER

Patents

N/A

General Description

METAL CASING & PARTS, SYNTHETIC CONTROLS & PARTS

Dimensions

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

Length

37.5 cm

Width

25.7 cm

Height

6.7 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Space Technology

Category

Communications

Sub-Category

N/A

Manufacturer

AKA

Unknown

Country

United States of America

State/Province

Unknown

City

Unknown

Context

Country

Canada

State/Province

Unknown

Period

UNUSED - BUT GENERALLY LATE 1990'S TO EARLY 2000'S

Canada

CANADA WAS PIONEER IN DIRECT-TO-HOME SATELLITE TV TECHNOLOGY, BEGINNING WITH EXPERIMENTS WITH HERMES & ANIK SATELLITES IN LATE 1970'S. FIRST DIRECT BROADCAST SATELLITE LICENSE ISSUED BY CDN GOV'T WAS TO BELL EXPRESSVU IN LATE 1995. EXPRESSVU 4700 IS KU BAND RECEIVER TYPICAL OF TYPE AVAILABLE IN CANADA.

Function

SYSTEM WHICH ENABLED DIRECT-TO-HOME TRANSMISSION OF SATELLITE TELEVISION SIGNALS. IT WAS USED TO RECEIVE & AMPLIFY DIGITAL SIGNALS RECEIVED FROM SATELLITE IN GEOSTATIONARY ORBIT, & DECODE & CONVERT DIGITAL INPUT INTO ANALOG OUTPUT FOR VIDEO DISPLAY & AUDIO SYSTEM.

Technical

EXPERIMENTS WITH HERMES & ANIK SATELLITES PROVED IT WAS FEASIBLE TO TRANSMIT TELEVISION TO ANTENNAS AS SMALL AS 0.6 M, USING POWERFUL AMPLIFIERS & KU BAND. FIRST WIDESPREAD USE OF SATELLITES FOR TELEVISON TRANSMISSION INVOLVED LESS EFFECTIVE C BAND WITH DISHES OF 10-12 FT IN DIAM. IN 1980'S. DBS SYSTEM OF 1990S OPERATED IN KU BAND & COMPRESSED DIGITAL SIGNALS RATHER THAN ANALOGUE.

Area Notes

Unknown

Details

Markings

LIGHT GREY LETTERING ON FRONT READS "Bell ExpressVu", "DV3", "MPEG 2", "4700"; PRINTED LABEL ON BACK READS "MODEL: 4700 REG. ID:005/ MAIN BOARD; BLACK LETTERING ON BACK FOR CONTROL FUNCTIONS & WARNINGS & READING "SATELLITE COMMUNICATION EQUIPMENT/ 87U3/ E116709"/ 1442AAPK66029C/ DESIGNED IN USA/ MADE IN U.S.A.".

Missing

APPEARS COMPLETE

Finish

BLACK PAINTED CASING WITH GREY PAINTED BACK; BLACK, RED, YELLOW, WHITE SYNTHETIC PARTS; PLATED PARTS

Decoration

LIGHT GREY BELL EXPRESSVU LOGO ON FRONT