RCA 2C39A Lighthouse Vacuum Tube RF Power Triode The RCA 2C39A is a high-mu, planar triode vacuum tube, renowned for its exceptional performance in ultra-high frequency (UHF) applications. Designed for use as a power amplifier, oscillator, or frequency multiplier, it operates effectively at frequencies up to 2,500 megacycles (MHz). Key Features High Plate Dissipation: Capable of dissipating up to 100 watts, ensuring robust performance in demanding RF applications. Planar Design: Incorporates a disc-seal construction with glass envelope parts, optimizing thermal management and electrical characteristics. External Heat Sink Fins: Equipped with prominent external fins connected to the anode, facilitating efficient heat dissipation during operation. Versatile Cooling Options: While typically force air-cooled, the 2C39A can also be adapted for water cooling, enhancing its adaptability in various setups. Technical Specifications Filament Voltage: 6.3 volts Filament Current: 1.0 ampere Maximum Plate Voltage: 1,000 volts Maximum Plate Current: 100 milliamperes Maximum Frequency: 2,500 MHz Maximum Output Power: 20 watts Applications The RCA 2C39A is ideally suited for use in RF power stages of transmitters operating in the low microwave region. Its design ensures reliable performance in both fixed and mobile communication systems, making it a preferred choice for professionals seeking dependable UHF amplification solutions. With its combination of high power handling, efficient cooling mechanisms, and versatile application potential, the RCA 2C39A remains a cornerstone component in advanced RF engineering projects.