The Eimac 4CX300A / 8167 is a forced air cooling ceramic tetrode capable of operation up to 500MHz. It has a breech-block base. The special socket required for the 4CX300A / 8167 is an SK740 or SK700. Electrical Data: Heater Voltage : 6 V Heater Current : 2.85 A
QQE03/20 - CV2799 is a double beam transmitting tetrode. Following the European pattern, a central flat cathode is surrounded by a split control grid (one half per valve), a common screen grid is wound next. The two beam forming plates can be seen either side of the central assembly. The anodes are finned for good heat dissipation and clearly separated...