Tubes Came from a 100 count Tube Lot from the Former United Electron Company.
The Box Contained 6X4 Tubes branded United Electron, Tung-Sol, RCA & Sylvania.
United Electron was Purchased by Ling Electronics in 1958.
Ling Purchased Their Tubes from the Big Tube Manufacturers and Rebranded as United Electron.
Durable Milspec Tube
Black Plates
Big "Horseshoe" Getter
Balanced Test Results from a Reference AMPLITREX Tester
New Labeled Generic Box Provided for Your Convenience.
Value-Added Tube
Pins Straightened & Cleaned with Proprietary Process.
Tube Surface Cleaned
"Plug & Play"
TESTING
AMPLITREX AT-1000
Tube Tested on a AMPLITREX AT-1000 Tester.
Tube Tested as Follows.
Tube Readings:
FWD Diode Conductance: 976uA & 977uA
No REV Conductance
No Shorts.
Murphy's Law:
"All Tube Testers are Wrong but Some are Useful"
** The Results from Your Tester will probably Differ from my Results.
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.
Why buy from old Murph?
Why buy from old Murph?
Integrity & Trust: Check my feedback.
I answer emails.
I ship fast. I pack well.
I combine shipping. The shipping calculator should work for this listing.
I don't require immediate payment. You can add items and I can invoice you with combined shipping.
I use the Ebay return policy of 30 days.
If you have any problems and old Murph will take care of you. :-)
I want to ensure that you are happy with your purchase. Sometimes, Murph misses something. Murph is getting old and can make mistakes on occasion! Murph's goal is a 5-Star sale to you, my customer! If you feel that Murph has fallen short, feel free to contact Murph and we will get it straightened-out. :-)