General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

SHEET STEEL CASE, CHASSIS ANDINTERNAL SHIELDING/ AUDIO TRANSFORMER, VACUUM TUBES, PLUG IN COILS, COIL AND TUBE SOCKETS, VARIABLE CAPACITORS, VARIABLE RESISTORS, FIXED CAPACITORS AND RESISTORS AND MISC. WIRING/ FRONT PANEL CONTAINS TWO CONTROL KNOBS AND ONE

Dimensions

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

Length

25.4 cm

Width

25.1 cm

Height

19.1 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Communications

Category

Radio

Sub-Category

N/A

Manufacturer

AKA

NATIONAL RADIO

Country

United States of America

State/Province

Massachusetts

City

Malden

Context

Country

North America

State/Province

Unknown

Period

1931-1945

Canada

Unknown

Function

USED TO RECEIVE RADIO AMATEUR CW (MORSE) AND AM (AMPLITUDE MODULATED) RADIO SIGNALS

Technical

THE REGENERATIVE PROCESS, DESIGNED INTO THIS RECEIVER WAS A MAJOR DEVELOPMENT THAT MOVED RADIO FROM INSENSITIVE CRYSTAL DETECTORS TO HIGHLY SENSITIVE VACUUM TUBE RECEIVERS. DISCOVERED IN 1914, REGENERATIVE RECEIVERS WERE USED INTO THE MID FORTIES.

Area Notes

Unknown

Details

Markings

DIAL IS CALIBRATED BLACK ON WHITE, 0 TO 190/ AUDIO TRANSFORMER MOUNTED CENTRE REAR OF CABINET HAS MANUFACTURER'S NAME PLATE RIVETED TO TOP: 'NATIONAL/ AUDIO/ TRANSFORMER/ TYPE S-101/ NATIONAL CO., INC.,/ MALDEN, MASS. U.S.A.'

Missing

ONLY ONE SET OF PLUG IN COILS INSTALLED FOR ONE SHORT WAVE BAND. WOULD EXPECT AT LEAST FOUR SETS OF COILS.

Finish

CASE, BLACK WRINKLE ENAMEL/ CHASSIS AND SHIELDS, FLAT BLACK ENAMEL/ DIAL AND KNOBS, BLACK

Decoration

N/A