The 7815 is a high μ rugged UHF planar triode for use up to 3 GHz. The anode connection is designed for conduction cooling, and the intended application is in airborne equipment.
The anode is copper and the anode heat coupler is held in place by compression provided by the screws.
Another view of the anode cooling connector.
This shows the valve connections. Centre is heater with the other heater surrounding it. Next is the grid ring and finally the anode ring.
The planar envelope is 30 mm in diameter, and including connections is 67 mm tall.
Reference: Data-sheet. Type 7815 was first introduced in 1966. See also1966 adverts.
