General Information

Serial #

29614

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

SYNTHETIC/ GLASS/ METAL/ FABRIC/ WAX

Dimensions

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

Length

11.1 cm

Width

5.1 cm

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Vacuum Tubes

Category

Telephone

Sub-Category

N/A

Manufacturer

AKA

FELTEN GUILLEAUME

Country

Federal Republic of Germany

State/Province

Unknown

City

Nuremberg

Context

Country

Europe

State/Province

Unknown

Period

WWI

Canada

Unknown

Function

DEVELOPED FOR USE AS A TELEPHONE REPEATER BUT BECAUSE OF MILITARY REQUIREMENTS WAS INCORPORATED INTO AMPLIFIERS FOR EAVESDROPPING ON ENEMY CONVERSATIONS IN THE FIELD

Technical

FIRST HARD TUBE TYPE DEVELOPED IN GERMANY BY SIEMENS & HALSKE/ THIS TUBE TYPE WAS THE FIRST STAGE IN THE 'A' TUBE DEVELOPMENT BY SIEMENS

Area Notes

Unknown

Details

Markings

ETCHED ON GLASS: 'KTD/ DRP/ 29[?]14'/ IMPRESSED IN WAX SEALS: 'KTD'/ ON CAP: 'G' 'A'/ LABEL PRINTED IN GERMAN READS IN PART: 'Suddeutsche Telefon-Apparate, Kabel-/ U. Drahtewerke A.-G., Nurnberg./ Verstarker Nr. 29614/ In Betrieb 3. 8. 18./ Aus Betrieb/ Gesamtbrennstuden/ Unterschrift'

Missing

From CA of 05/01/1998 by Pat Montero: No - Complete

Finish

UNCOLOURED GLASS/ BLACK CAPS ON EACH END/ WHITE STRING WITH BLACK WAX/ BLUE TAG WITHBLACK PRINTING

Decoration

N/A