General Information

Serial #

N/A

Part Number

1

Total Parts

2

AKA

N/A

Patents

N/A

General Description

.1 GLASS ENVELOPE; METAL PINS & PARTS/.2 CARDBOARD BOX

Dimensions

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

Length

N/A

Width

1.8 cm

Height

5.3 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Vacuum Tubes

Category

Miscellaneous

Sub-Category

N/A

Manufacturer

AKA

RCA

Country

United States of America

State/Province

Unknown

City

Unknown

Context

Country

Canada

State/Province

Ontario

Period

Unknown

Canada

FROM COLLECTION OF VACUUM TUBES DONATED TO CSTM BY CANADIAN GOVERNMENT DEPARTMENT NATURAL RESOURCES CANADA.

Function

VACUUM TUBE USED AS GRID CONTROL RECTIFIER.

Technical

EXAMPLE OF RECTIFIER THYRATRON.

Area Notes

Unknown

Details

Markings

.1 WHITE LETTERING ON TUBE READS "JRC-2D21", "MADE IN/ U.S.A./ V4E" & "RCA [LOGO]/.2 BLACK LETTERING ON SIDES READS "U.S. NAVY/ Mfgd. By/ Radio Corp./ Of America/ Acpt/ July 1945" & "U.S. ARMY/ JRC 2D21"; BUFF LETTERING ON GREY BOX ENDREADS "TRADE MARKS/ and RADIOTRON/ REGISTERED/ U.S. PAT. OFF." & "GUARANTEE, U.S./ PATENTS AND LICENSE / NOTICE INSIDE; BLACK PRINTED LICENSE NOTICE & "Box Patented U.S./ Pat. No. 2,125,312/ R-SLD5-5/ (7-43)

Missing

COMPLETE

Finish

.1 COLOURLESS TRANSPARENT GLASS; METALLIC PINS/.2 BUFF COLOURED BOX

Decoration

N/A