Generator and Modulator Tubes

Generator and modulator tubes are indexed by complete designation, execution and equipment function. A shared family prefix or similar envelope does not establish interchangeability.

Device types and operating roles

This section covers GI, GK, GM, GMI, GS, GU and related power devices for RF generation, power amplification and high-voltage pulse control.

Operating data determine the execution

Anode and grid ratings, frequency, pulse duration, duty factor, cooling, socket and mounting determine the required execution.

• record the complete marking and suffix;
• identify the equipment and circuit position;
• check electrical and thermal operating data;
• attach marking and interface photographs;
• state quantity and required documents.

Find and request the exact device

Choose the exact card to confirm identity and supply conditions. Related groups are available under Vacuum Tubes and Electron Devices and Microwave and Special Electron Devices. General terminology is covered in the reference article.