HistoryThe English physicist John Ambrose Fleming was the
inventor of the first rectifying tube which was developed in
1904.
The first amplifying tube was invented by the American
electrical engineer Lee De Forest in 1906.
The Eimac 4X150G is a coaxial UHF power tetrode capable of
500MHz CW or 1.5GHz pulsed operation.
GU-50 (-50) Power Pentode was an universal, most common xUSSR
power tube from the 50's up to the present days.
This high-powered klystron emits a large radio-frequency signal
that can be splitinto several signals for many acceleratorcavities
at once.
The 200-watt Ka-band space-qualified traveling-wave tube
manufactured by L-3 Communications ETI, Inc. Copyright L-3
Communications Electron Technologies, Inc.; prepared under contract
to NASA.
