The V240C/2K is a velocity modulated oscillator or Heil Tube designed for operation in the range of 3.95 to 4.05 GHz. The output is 350 mW and the V240C/2K is a direct equivalent of the CV2189 and this exhibit carries both Type designations.
The attached data-sheet includes a cross sectional diagram of the internal structure.
The evacuation pip on the side with the output connection to waveguide at the top.
The side view.
The resonator disc and top cap.
The cardboard ring came with the valve to protect the resonator ring.
The thin glass tube envelope is 19 mm in diameter, and excluding the B7G base pins is 59 mm tall.
