The 3CX3000A7 is a ceramic disc seal triode is designed for industrial heating and transmitter use.
When in operation the ceramic is seen to glow pink. It is directly heated and the grid is the top ring. The output power is several kilowatts of RF.
Data-sheet courtesy of G8WRB.
The co-axial envelope is 100 mm in diameter and, including the base rings, is 210 mm tall.
Absolute Maximum Operating Conditions¶
PDF scanned from an original document held by the museum
Updated April 07, 2013. shape:co-axial construction:disc.seal.(ceramic) type:triode age:post 1975 base: pin: