General Information

Serial #

N/A

Part Number

1

Total Parts

4

AKA

N/A

Patents

N/A

General Description

TUBE: GLASS/ METAL/ SYNTHETIC/ CARTON: CARDSTOCK

Dimensions

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

Length

11.8 cm

Width

5.0 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

MARCONI

Country

England

State/Province

Unknown

City

London

Context

Country

England

State/Province

Unknown

Period

1920'S

Canada

Unknown

Function

A LOW FREQUENCY POWER AMPLIFIER FOR USE IN THE LAST STAGES OF RADIO RECEIVERS OPERATING FROM A 6 VOLT ACCUMULATOR. MAY BE USED IN THE H.F. AND DETECTOR POSITIONS IN A RECEIVER (REF.2)

Technical

TYPE SAMPLE OF EARLY 'DULL EMITTER' VALVE MADE IN ENGLAND. THE M.O.V. CO. WAS THE 1ST BRITISH MANUFACTURER TO DEVELOP DULL-EMITTER VALVES HAVING THORIATED FILAMENTS.

Area Notes

Unknown

Details

Markings

TUBE: PRINTED ON TOP: 'D.E. 5/ 5.6 V/ MADE IN ENGLAND PATENTED'/ LABEL: 'MARCONI/ MWTC [LOGO]'/ MOLDED IN BASE: 'MOV CO LTD'/ PRINTING ON CARTON INCLUDES: 'MARCONI VALVE/ G. Marconi/ IMPORTANT NOTICE/ Letter Patent Nos. 147293, 230011, 279171/ and other British Letters Patent./ LIMITED LICENCE./...'

Missing

N/A

Finish

TUBE: UNCOLOURED GLASS/ BLACK SHELL/ CARTON: PURPLE WITH GOLD & BLACK PRINTING

Decoration

TUBE: LABEL WITH LOGO & CO. NAME AFFIXED TO GLASS - PURPLE WITHGOLD & BLACK PRINTING/ CARTON: DECORATIVE SCALLOP DESIGN AROUND ALL EDGES; DRAWING OF WORLD WITH 'PERSONAL SIGNATURE' OF MARCONI OVERWRITTEN