The 802 from RCA is an RF Power pentode that is also specified for audio service as a modulator for AM transmitters. The maximum continuous anode dissipation is 10 Watts. It is designed for use up to 30 MHz at full ratings but can be used at up to 100 MHz with reduced ratings.
The base carries the de Forest logo as RCA took over the de Forest company.
The anode box can be seen to contain the wire grids and two white cathode tubes. The support insulators are made of ceramic for high voltage service.
The internal shielding is present above the top ceramic support and below the lower ceramic support as well as around the grids at the edges of the anode.
The complete assembly with side supports for greater mechanical stability.
The classic envelope is 52 mm in diameter, and excluding the UX7 base pins is 129 mm tall.
Reference: Datasheet. Type 802 was first introduced in 1940.