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General Electric 810 Vacuum Tube, (GL-810) High Power Transmitting Triodes Used, Tested, in Excellent Condition

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MPN:
810
Condition:
Used
Shipping:
$12.00 (Fixed Shipping Cost)
  • General Electric 810 Vacuum Tube, (GL-810) High Power Transmitting Triodes Used, Tested, in Excellent Condition
  • General Electric 810 Vacuum Tube, (GL-810) High Power Transmitting Triodes Used, Tested, in Excellent Condition
$94.99
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Description

General Electric 810 Vacuum Tube, (GL-810) High Power Transmitting Triodes Used, Tested, in Excellent Condition

  **All the tubes I sell are tested and come with a money back, satisfaction guarantee**

  Each one of the stock I have, has been tested in a Collins KW-1, 1000 watt transmitter at FULL Modulation, and are all performing up to spec with no problems.

This is the only way to make sure they are good and the ability to compare many 810 tubes in the KW-1, assures RELIABLE comparative testing.

I will combine the shipping and refund any difference.

This is a genuine GE, GL-810 high-mu power triode, tested in a Collins KW-1 transmitter where it was operated and tested at full modulation.
 
It delivers strong, reliable performance with no detectable issues in emission, gas, or shorts.
 
These tubes were proven under real-world high-power AM conditions, making them ideal for Collins KW-1 owners, vintage AM transmitters, modulators, or RF power amplifier projects.
 
General Electric (GE) GL-810 tubes are premium high-power transmitting triodes renowned for their rugged construction, high perveance, and reliability in demanding RF and audio applications. These tubes were manufactured by General Electric, one of the pioneering U.S. companies in vacuum tube technology. GE produced a full range of receiving, transmitting, and industrial tubes in domestic plants (including major facilities like Owensboro, Kentucky), with strict quality controls and military-grade standards for many lines.
 
 
Key Manufacturing and Design Highlights
  • High-mu triode design: The GL-810 features a directly heated thoriated-tungsten filament (10.0 V at 4.5 A), graphite plate, and high perveance for excellent modulation capabilities. It delivers up to ~475 watts typical power output in Class C telegraph service (ICAS ratings) and handles plate voltages up to 2,000 V with 250 W plate dissipation.
     
    steampoweredradio.com
  • Applications: Designed for modulators, amplifiers, and oscillators in radio broadcast, amateur radio, and industrial heating service. Its high perveance makes it particularly well-suited as a modulator tube.
     
    worldradiohistory.com
  • Build quality: GE's transmitting tubes like the GL-810 were built for long life and heavy-duty operation, in original catalogs, emphasizing reliability under full load.

     

GE 810 tubes (tested in a Collins KW-1 at full modulation) represent the gold standard for vintage transmitting tubes:
  • Rigorous real-world testing: Each tube has been proven under full-load conditions in the KW-1's modulator stage—handling 100% modulation at 1 kW input levels. This goes far beyond basic emission testing and confirms low distortion, stable operation, and no arcing or failure under peak demands.
  • Excellent cosmetic condition: Pristine appearance with no significant wear, discoloration, or damage—ideal for display or premium restoration projects.
  • old stock advantage: These U.S.-made GE tubes from the era offer superior consistency and longevity compared to many modern or offshore alternatives. Enthusiasts and restorers prize them for audio amplifiers, RF transmitters, and vintage Collins gear due to their authentic performance and build quality.

     

These are premium old-stock examples, meticulously tested in a real Collins KW-1 at full modulation. They handled 100% modulation with rock-solid performance—no arcing, no distortion, just clean, full-power output. In excellent cosmetic condition with pristine glass, bases, and markings, they look as good as they perform. Whether you're restoring a KW-1, building a high-end audio amp, or seeking the ultimate vintage transmitter tubes, these GE 810s are proven performers ready for decades more reliable service."

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