Title
Vacuum tube type EF86
Catalog Number
102654819
Type
Physical object
Description
Vintage vacuum tube like those from the Colossus Computer rebuild project. Vacuum tube is covered in matte, red paint. The paint has chipped in approximately five places. Stamped on the front of the tube is "Mullard" and "Penetone Trade Mark."
Manufacturer
Mullard, Ltd.
Identifying Numbers
Model number |
EF 86 |
Stamped on front of tube in black ink |
Other number |
1BOA |
Stamped on base in silver ink |
Other number |
BVA |
Stamped on front of tube in black ink |
Dimensions
overall: 3 7/8 in x 1 1/4 in x 1 1/4 in
Category
Component/vacuum tube
Credit
Gift of Bletchley Park Trust