General Information

Serial #

320

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

ALUMINUM FRAME & PANELS; METAL TUBE & POWER RESISTOR SOCKETS; GLASS, METAL & SYNTHETIC (BAKELITE) FITTINGS AND COMPONENTS.

Dimensions

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

Length

71.2 cm

Width

76.2 cm

Height

181.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Communications

Category

Radio

Sub-Category

N/A

Manufacturer

AKA

Marconi

Country

Canada

State/Province

Quebec

City

Montreal

Context

Country

Canada

State/Province

Quebec

Period

THIS TYPE OF EQUIPMENT USED C. 1934 TO C. 1960.

Canada

MANUFACTURED IN CANADA TO DOC SPECS., AND USED IN MONT JOLI, PQ SUB STATION.

Function

TO CONVERT 115V 60HZ ALTERNATING CURRENT TO A MODULATED BEACON SIGNAL IN THE LONG WAVE RADIO FREQUENCY BAND. USED AS PART OF SYSTEM WHICH PROVIDED PILOTS WITH MEANS OF LOCATING AN AIRPORT DURING POOR VISIBILITY.

Technical

TRANSMITTER ELEMENT OF SIMPLE RADIO SYSTEM WHICH ENABLED A PILOT TO LOCATE AN AIRPORT DURING POOR VISIBILITY. ONE UNIT TRANSMITTED AN "A" IN MORSE CODE (".-"); THE OTHER AN "N" ("-."). IF THE PILOT HEARD A STEADY TONE FROM HIS BEACON RECEIVER, HE WAS CENTERED ON THE AIRPORT APPROACH. IF HE HEARD A PREDOMINANT "A" (.-) OR PREDOMINANT "N" (-.), HE WAS LEFT OR RIGHT OF APPROACH CENTRE.

Area Notes

Unknown

Details

Markings

Mfr's plate located in upper left front of cabinet reads " 400W. AIRWAYS BEACON TRANSMITTER/ TYPE 84520-E SERIAL 320/ VOLTS 115 CYCLES 50/60 AMP 25 P.F. 90%/ MANUFACTURED FOR/ DEPT. OF TRANSPORT/ CANADA/ BY/ CANADIAN MARCONI COMPANY ". All controls, etc. labelled.

Missing

HIGH POWER RF AND AF VACUUM TUBES; FREQUENCY CONTROL CRYSTALS; KEYING DEVICE & POWER TRANSFORMER. FRAME HAS BEEN BENT, PREVENTING SOME PANEL MOUNTING THUMB SCREWS FROM BEING MATED WITH THE FRAME THREADS.

Finish

BLACK WRINKLE FINISH ON CABINET.

Decoration

N/A