Klystrons with external cavities are easy to tune and maintain. In comparison, those with internal cavities
no tuning requirement.
no "penultimate" cavity.
less power loss at higher frequencies.
Where does the action that causes velocity modulation in a multicavity klystron take place?
In the output cavity
In the drift tube gaps
Between the cathode and the input cavity
Between the focus electrode and the modulating anode
CHECK YOUR ANSWERS WITH LESSON 1 SOLUTION SHEET PAGE 64.