[Boatanchors] Svetlana tubes

[Raymond Perkins]

Hello everybody. I welcome some information.
   
  Could someone give an evaluation of Svetlana tubes in general and Svetlana 811A's in particular as compared with other manufacturers? 
   
  A friend gave me two 811A's, NIB, and I tested both in my tester. One was strong as a tornado. The other had a very dull filament glow for about 30 seconds, and then fizzled out dead to the world. I am puzzled by its purchase of the farm.
   
  Thanks es 73
  Raymond