6P211

6P211 (6П211 in Cyrillic) is a Soviet-era vacuum tube designation for a high-power radio frequency amplifier valve. Produced in the Soviet Union and later in Russia, it was used in a range of equipment including communications transmitters, radar systems, and, in some cases, industrial RF amplifiers and amateur radio projects. The tube is part of the 6P family, which comprises power amplification valves designed for relatively high voltage operation and RF performance.

Design and variants: The 6P211 family includes several variants such as the base model and improvements known as the 6P211A. Variants differ in electrical characteristics, reliability features, and construction details. The tubes generally employ a sealed envelope with an anode, control grids, and a heater, and they require appropriate high-voltage supply for the anode and a heater supply compatible with the device’s design. Exact operating parameters vary by variant and production lot, so precise plate voltage, current, and gain values are obtained from variant-specific datasheets or manufacturer records.

Applications and usage: In its heyday, the 6P211 was used as a power amplifier stage in RF transmitters and radar equipment. It has also appeared in surplus markets and is collected or repurposed by hobbyists and vintage-radio enthusiasts for RF amplification projects.

Notes: Because detailed specifications can differ between variants and production lots, users should consult the specific datasheet or credible collector references for precise electrical ratings and usage guidelines. The 6P211 remains of interest primarily to technicians and collectors dealing with Soviet-era vacuum tubes.