This is a disc seal triode intended for pulse operation. It's serial number is 2504. In pulse mode a pair of CV257 valves could produce 10kW RF at 600MHz.
*: At ambient temperatures of 30°C forced air cooling of greater than 5 cubic feet per minute with a pressure drop equivalent to 2" of water is required.
**: At Va=500V, Ia=100mA
In the image above, the heater connection is leftmost, with the heater/cathode connection being the first disc. The grid is the next disc and the anode the far end. The anode connector has an internal radiator (see below).
This file was last modified23:10:24, Wednesday February 23, 2022