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Cetron JAN 811A Vacuum Tube, NOS, Date Code 8235, Tested Full RF Output, USA Made Military Spec

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MPN:
811A
Condition:
New
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  • Cetron JAN 811A Vacuum Tube, NOS Original Box, Date Code 8235, Tested Strong RF Output, USA Made Military Spec
  • Cetron JAN 811A Vacuum Tube, NOS Original Box, Date Code 8235, Tested Strong RF Output, USA Made Military Spec
$59.99
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Cetron JAN 811A Vacuum Tube, NOS, Date Code 8235, Tested Full RF Output, USA Made Military Spec

 I tested this tube in an Ameritron 811 Amplifier and it is full emission.

 This is the only Cetron 811A I have and there are several other brands in my listings.

Cetron JAN 811A is a US-made military-spec (JAN = Joint Army-Navy) high-mu power triode vacuum tube, built to original RCA specifications. Cetron (associated with Electronic Enterprises / Richardson Electronics) produced these as direct equivalents to the classic RCA 811A. They are highly regarded for RF linear amplifiers (e.g., Ameritron AL-811 series, Collins 30L-1), modulators, and audio applications.
 
surplussales.com
Key Specs (Standard 811A)
  • Filament: 6.3V @ 4A (directly heated thoriated tungsten).
  • Plate Dissipation: 45W CCS / 65W ICAS.
  • Max Plate Voltage: Up to 1250–1500V depending on service.
  • Amplification Factor (μ): ~160.
  • Typical Use: Class AB/B/C RF power amplification up to ~30 MHz, delivering solid output (e.g., pairs/quads in legal-limit amateur amplifiers).
     
    static.dxengineering.com
Date code 8235 points to 1982 production (common US tube coding around that era: YYWW or similar format). These are desirable late-era American NOS tubes with strong reputation for performance
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