General Information

Serial #

N/A

Part Number

1

Total Parts

2

AKA

N/A

Patents

N/A

General Description

GLASS/ SYNTHETIC/ METAL/ CARDSTOCK BOX

Dimensions

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

Length

9.8 cm

Width

3.0 cm

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Vacuum Tubes

Category

Receiving

Sub-Category

N/A

Manufacturer

AKA

MULLARD

Country

England

State/Province

Unknown

City

Unknown

Context

Country

Worldwide

State/Province

Unknown

Period

PROBABLY 1940'S

Canada

DISTRIBUTED BY A CANADIAN COMPANY

Function

USED AS A CLASS "A" RADIO FREQUENCY AMPLIFIER IN A RADIO RECEIVER

Technical

ONE OF THE 'RED E' SERIES INTRODUCED BY MULLARD IN THE UK. THE TUBES HAS A 6.3V HEATER AND WERE PAINTED RED TO DISTINGUISH THEM FROM THE EARLIER 4V SERIES. THEY MARKED A TURNING POINT IN EUROPEAN TUBE DESIGN BECAUSE OF THE GREATLY REDUCED PHYSICAL SIZES OF ALL TYPES EXCEPT OUTPUT TUBES & RECTIFIER (REF.2)

Area Notes

Unknown

Details

Markings

TUBE: ON GLASS: 'Mullard/ EF 39/ BVA/ BRITISH MADE'/ ON BASE: 'L81/ B5E'/ PRINTING ON BOX INCLUDES: 'Westinghouse/ EF 39/ ELECTRONIC/ TUBE/ YOU CAN BE SURE/...IF IT'S/ WESTINGHOUSE/ Westinghouse/ ELECTRONIC TUBE'

Missing

N/A

Finish

TUBE: BODY RED; BLACK SHELL/ BOX: BLUE, WHITE & ORANGE

Decoration

'MULLARD' LOGO PAINTED ON ENVELOPE