The CV4097 is a special quality RF beam tetrode for battery equipment and operating at up to 100 MHz.
The filament has two sections an in series consume 230 mA at 5 Volts. The anode dissipation is five Watts. and typically the valve will generate 2.4 Watts of RF output.
The anode is blackened and the beam plate are bright. Inside the grids and filaments can be seen.
Looking along the grids through a gap in the side of the anode.
The thin glass tube envelope is 20 mm in diameter, and excluding the B9A base pins is 58 mm tall.
Reference: Datasheet. Type CV4097 was first introduced in 1955.
