General Information

Serial #

611

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

SHEET STEEL MAIN CHASSIS & FRONT PANEL. CRT SHIELD IS SPECIAL MAGNETIC FIELD BLOCKING MATERIAL. GLASS, METAL & SYNTHETIC COMPONENTS.

Dimensions

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

Length

49.0 cm

Width

23.0 cm

Height

20.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Communications

Category

Radar

Sub-Category

N/A

Manufacturer

AKA

REL

Country

Canada

State/Province

Ontario

City

Toronto

Context

Country

North America

State/Province

Unknown

Period

THIS UNIT PROBABLY USED C. 1940-1948.

Canada

MFD IN CANADA FROM A CANADIAN MODIFIED BRITISH DESIGN, TO USE NORTH AMERICAN COMPONENTS. NOTE COAX & INTERCONNECTS ARE BRITISH DESIGN, ALLOWINGCOMPATIABILITY WITH BRITISH MFD UNITS.

Function

TO DISPLAY ON A CALIBRATED CRT TUBE THE DISTANCE IN NAUTICAL MILES FROM AN AIRCRAFT TO A SURFACE VESSEL.

Technical

EARLY EXAMPLE OF RANGING RADAR, COPIED FROM BRITISH A.S.V. (AIR TO SURFACE VESSEL) DESIGN. ON THE DISPLAY, ALTERNATING RANGE SCALES OF 36 & 90 NAUTICAL MILES WERE AVAILABLE. TARGET DIRECTION WAS DETERMINED BY COMPARISON OF A PAIR OF ECHOS PRESENTED BACK-TO-BACK ON THE RANGE SCALE.

Area Notes

Unknown

Details

Markings

"INDICATOR UNIT/ SERIAL 611/ REF. NO. 110-QB/1 MANUFACTURED BY R.E.L. TYPE NO. 1 MFD." printed on plate on lower front of casing./ "GAIN", "BRILL", "FOCUS", & "RANGE 0 36 90" printed on control knobs./ CRT scale divided 0-36 at intervals of 4; 0-9 by single increments. scale labelled "NAUTICAL MILES" at top & "RIGHT HAND SCALE X 10 FOR '90' SCALE" along right side. Most visible components, including vacuum tubes, are labelled.

Missing

RADAR UNIT, INTERCONNECTING PANELS, POWER SUPPLY & ANTENNA MISSING.

Finish

FRONT PANEL RCAF BLUE. CHASSIS ZINC PLATED. METAL VACUUM TUBES ARE BLACK. ALL OTHER COMPONENTS HAVE NATURAL FINISH.

Decoration

N/A