General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

CAST ALUMINUM CASE, ALUMINUM RECEIVER CHASSIS, VACUUM TUBES AND OTHER MISC. RADIO RECEIVER ELECTRONIC PARTS/ TWO VERNIER KNOBSMOUNTED ON THE FRONT PANEL OPERATE TUNING CAPACITORS/ ONE BAKELITE KNOB OPERATEA POTENTIOMETER, ONE A VOLUME CONTROL,ONE AN ON/OFF SWITCH, ONE A SENSE SWITCHAND ANOTHER A DF BALANCE A TOGGLE SWITCH TURNS SENSE ON OR OFF/ 2 PHONE JACKS ARE PROVIDED. A POINTED KNOB OPERATES A

Dimensions

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

Length

24.0 cm

Width

80.0 cm

Height

42.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Communications

Category

Radio

Sub-Category

N/A

Manufacturer

AKA

Unknown

Country

Unknown

State/Province

Unknown

City

Unknown

Context

Country

North America

State/Province

Unknown

Period

1935 THROUGH 1945

Canada

Unknown

Function

USED TO LOCATE THE SOURCE OF A RADIO TRANSMITTER OR OTHER RADIO FREQUENCY EMISSION IN THE HF SPECTRUM. A SPECIAL ELECTRICALLY ROTATABLE ANTENNA ARRAY WAS CONNECTED TO THIS DEVICE.

Technical

PRIOR TO RADAR, THIS UNIT COULD BE USED TO LOCATE THE BEARING OF AN AIRCRAFT USING THE SIGNAL FROM THE ON BOARD HF RADIO TRANSMITTER

Area Notes

Unknown

Details

Markings

DF SCALE ENGRAVED AND FILLED WITH BLACK COMPOUND WITH SILVER/GRAY BACKGROUND. 0 TO 360 CALIBRATION/ VERNIERS ENGRAVED, BLACK ON SILVER LIKE NATURAL PLATING. 0 TO 100. ALL KNOBS DESIGNATED WITH OPERATING INFO

Missing

ANTENNA ARRAY, 1 #30 VACUUM TUBE, POWER SUPPLY OR BATTERIES; LEFT TUNING KNOB CHIPPED From CA of 09/27/1995 by Tony Missio: Yes - Missing one tube

Finish

GLOSS BLUE/GRAY ENAMEL/ ALL ELECTRONIC COMPONENTS NATURAL/ KNOBS BLACK BAKELITE/ VERNIER SKIRTS PLATED

Decoration

N/A