SHINING LIGHT is Offering the Following Tube:
One Excellent GE 6SG7 Pentode Tube
Lot#: E239
  • NOS Tube
  • GE Tubes were in HYTRON Boxes.
  • Tube Surfaces & Boxes showing Age from Damp Environment.
  • Pentode is Strong as Hell.
  • Date Code: 452
Value-Added Tube
  • Pins Straightened with Proprietary Process
  • Tube Surface Cleaned
  • "Plug & Play"
Testing 
HICKOK TV-7-A/U
Tube Tested on a Nelson TV-7A/U Tester
Tube Tests as Follows:
RESULTS: 
  • Pentode: 71: 109% of Calculated NOS
The Calculated NOS Value for a 6SG7 Tube is: 65.
The Minimum Value (Pentode/Diode) for a 6SG7 Tube is: 42.
The Minimum Value is Calculated at 65% of New Tube.

Murphy's Law: 
"All Tube Testers are Wrong but Some are Useful"
The Results on Your Tube Tester will Vary from These Measurements.

Returns:
  • We Offer 30 Day Returns with a Free Shipping Label!
  • Returns Accepted if the Items are Returned in the Exact Same Condition.
  • The Pull Tabs on the Tube Boxes Must be in the Same Condition.
  • The Cotton must be Installed on Each End of the Tube in Each Box.
  • The Pull Tabs will be Taped so Tubes do not Fall-Out of Boxes During Shipping.
  • Carefully Cut the Tape on the Pull Tabs to Open Boxes.
  • The Lettering on the Tubes Must Also be in the Same Condition upon Return.
  • Hold Tubes in Areas where there is No Silkscreen.
  • Tubes Must Test with the Same Results Upon Return.
Facts about Murph...
  • Dairy Farmed in Green Bay, WI until I was about 27 years old.
  • Started out my career in electro-mechanical, then Electrical Engineering.
  • Moved into Biological Engineering where I spent most of my career.
  • If you ever ate a candy bar, I might have had something to do with the quality...
  • Over the last 10 years, I have moved my spare time to repairing tube and discrete amps & receivers.
  • I like Fisher Receivers and Scott Amps.
  • I have too many tubes.
  • Statistics-driven when evaluating vacuum tubes > Certified Six Sigma Master Black Belt.
  • Testing Equipment: Two Nelson Hickok TV-7s, Two Hickok 539Bs, One Recently Acquired AMPLITREX AT-1000.
  • I have too many testers.
  • Murph really tries to to list and sell really good vacuum tubes.