Skip to main content
Collection
Collection
Learning
The group
Visit us
Expand child menu
Locomotion
National Railway Museum
National Science and Media Museum
Science and Industry Museum
Science and Innovation Park
Science Museum
Collection
Search
About
Search
About
Collection
Learning
The group
Visit us
Expand child menu
Locomotion
National Railway Museum
National Science and Media Museum
Science and Industry Museum
Science and Innovation Park
Science Museum
Search our collection
All
6
People
0
Objects
6
Documents
0
View:
Filter search
Clear all filters
Image
Has Image
3
Non-Commercial Use
3
Category
Electronic Components
3
Radio Communication
1
Object type
cathode
4
Material
metal (unknown)
1
Maker
Metropolitan-Vickers Electrical Company Limited
1
Place
Trafford Park
1
Date
From year
To year
filter
Mullard type QQZ06-40A VHF double beam tetrode
1940-1960
Cathode and grid, for a demountable tetrode valve
1939
Mullard type QQX03-20A UHF double beam tetrode quick heat cathode (VTB)
1940-1960
1 cathode
1 cathode
1 cathodes
1 cathodes
1 cathode
1 cathode
