Artifact Details

Title

Vacuum tube type 7AK7

Catalog Number

102732761

Type

Physical object

Date

1938 ca.

Manufacturer

Sylvania

Place Manufactured

U. S.

Identifying Numbers

Model number 7AK7 Printed in silver ink on top of the glass envelope.
Other number AK3316 Written in green ink near the bottom of the glass envelope.
Other number IORDC3A V3-1 Written vertically in silver ink on the glass envelope.

Dimensions

overall: 3 1/8 in x 1 1/4 in x 1 1/4 in

Description

This is a pentode in a glass envelope with an eight-pin loctal base. This is a spare tube for Delay Line Amplifier S/N 16.

Category

Component/vacuum tube