- TUNG-SOL Mfg. DuMont Tube Lettering & Tube Box
- Tests Very Strong.
- Lots of Good Flashing
- Black Plates
- 2X Side "O" Getters
- Date Code: 4-38-3
- Relabeled DUMONT Tube Box Provided for Your Convenience.
"Tube Exhibits Excellent Low FWD & Balanced Voltage from the Big, Bad AMPLITREX AT1000, the Best Tester for Vetting Rectifier Tubes"
Value Added Tube
- Pins Cleaned & with Proprietary Process
- Tube Surfaces Cleaned
- Plug & Play
Testing
AMPLITREX AT1000
Tube Tested on an AMPLITREX AT1000 Tube Tester
Test Results as Follows:
- FWD Voltage: 26/27
- REV Voltage: 416/415
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 in Electrical Engineering before moving to Biological Engineering.
- 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.