SHINING LIGHT is Offering the Following Tubes:
Two Excellent SYLVANIA 10EM7 Tubes
Lot#: 7B
  • NOS NIB
  • One Tube has Black Plates on Both Triodes with an "O" Getter.
  • Other Tube has a Black Plate and a Grey Plate on Trodes with a "D" Getter.
  • Date Codes: EBJ,EAM
Value Added Tubes
  • Pins Cleaned & Straightened with Proprietary Process
  • Tube Surfaces Cleaned
  • "Plug & Play
Testing
HICKOK TV-7A/U
Tube Tests as Follows:
  • 36/46 & 41/49
The Hickok Specified Minimum for a 10EM7 Tube is: 25/35.
This Hickok TV-7A/U was Calibrated by Dan Nelson in May, 2021.

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.