Eimac Y-820 beam switch tube

Product Description

Eimac Y-820 Beam Switch Tube (RF Switch/Relay)

This is a high-power, passive RF switching component designed for UHF/VHF applications in broadcast, radar, or communications systems. It functions as a coaxial relay or switch, using an internal electron beam to route RF signals with minimal loss, designed for high-reliability, high-frequency service.

Key Specifications:

• Type: Passive Beam Switch Tube (Electronically Controlled RF Relay)

• Frequency Range: Likely UHF/VHF bands (specify if known, e.g., up to 500 MHz)

• Construction: Ceramic-metal (ceramic envelope with metal electrodes)

• Connectors: Coaxial (likely Type N or similar)

• Control: Requires external solenoid or driver circuit for switching

• Condition: Used – pulled from telecommunications or broadcast equipment

Applications:

• Antenna switching in broadcast transmitters

• RF path selection in legacy radar or communication systems

• High-power RF test setup switching

• Restoration of vintage high-power radio equipment