Artifact Details

Title

Vacuum tube type SR1407

Catalog Number

102735433

Type

Physical object

Date

1925 ca.

Manufacturer

Sylvania

Place Manufactured

U. S.

Identifying Numbers

Model number SR1407 Printed in silver ink on top of the glass envelope.
Other number 9RD1 V1-2 Handwritten vertically in green ink on the glass envelope of the same tube.
Other number AD7007 Stamped in green ink near the bottom of the glass envelope on one of the tubes.

Dimensions

overall: 3 1/8 in x 1 1/8 in x 1 1/8 in

Description

Three tubes are included in this record. This is a Sylvania developmental power pentode in a glass envelope with an eight-pin loctal base. This is a spare tube for Bus Driver Arithmetic Rack S/N 10.

Category

Component/vacuum tube

Credit

Gift of the Digital Equipment Corporation

Lot Number

X115.82