Title
Vacuum tube type 7AD7Catalog Number
102735027Type
Physical objectDescription
This is a power pentode in a glass envelope with an eight-pin loctal base. This is a spare tube for top panel-Bus Driver Arithmetic Rack S/N 4.Date
1959 ca.Manufacturer
SylvaniaIdentifying Numbers
Model number | 7AD7 | Printed in silver on top of the glass envelope. |