Title
Vacuum tube type 7AK7Catalog Number
102732761Type
Physical objectDescription
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.Date
1938 ca.Manufacturer
SylvaniaPlace 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 inCategory
Component/vacuum tube
