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Cetron / United / National matched pair of genuine NOS (New Old Stock) 810 high-power transmitting triode vacuum tubes in Original Boxes Tested

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MPN:
810
Condition:
New
Shipping:
$16.00 (Fixed Shipping Cost)
  • Cetron / United / National matched pair of genuine NOS (New Old Stock) 810 high-power transmitting triode vacuum tubes in Original Boxes Tested
  • Cetron / United / National matched pair of genuine NOS (New Old Stock) 810 high-power transmitting triode vacuum tubes in Original Boxes Tested
$349.99
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Description

Cetron / United / National matched pair of genuine NOS (New Old Stock) 810 high-power transmitting triode vacuum tubes in Original Boxes Tested

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

 
These are desirable true NOS stock from the National Electronics (also known as Cetron or United/National-branded) family.
  National Electronics produced the 810 under various labels, including Cetron and United. Date code 9320 typically decodes as 1993, week 20 (standard YYWW format used by many U.S. tube makers in that era). This places them in the later period of U.S. production for this classic heavy-duty triode.

  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.

They deliver 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.
 
If you buy multiple tubs or tube sets, I will combine the shipping to lower the cost and refund any difference.
 
 
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