The Gammatron 24-G is a high voltage transmitting triode that produces a considerable amount of RF power up to the low VHF region and has a 25 Watt anode dissipation.
It is also rated for push-pull modulator service in Class B where at 2,000 V on the anodes it can generate 110 Watts.
This valve is known as 24-G, 24G and HK24.
The USA Government procurement code of VT-204 is also on the glass as is the fact that this was made for the US Army.
Serial number? 77139.
A closer view of the grid support passing through the side wall of the envelope. This is the only support for the cage grid.
The top and side connections. Inside the bell anode can be seen the thoriated tungsten helical filament and the rods making up the cage grid.
A closer view.
The wide glass tube envelope is 35 mm in diameter and, excluding the UX4 base pins, is 94 mm tall.
References: Data-sheet. Type 24G was first introduced in 1944. See also1944 adverts.
