Dan Nelson (new e-mail!) is one of the best known TV-7 experts. Good source for expert repair, calibration and parts for TV-7 and other testers. Highly recommended.

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Attempting to test unreferenced tubes in a TV-7 tube tester. TV-7 meter troubleshooting. Issues on testing VR tubes. False gas and shorts tests when testing EL84, and how to fix it.

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This TV-7D/U is exceptionally clean and has little signs of wear. Has all three of the military socket savers on the 7-pin min, noval, and octal sockets. All the voltages are within specs and about as close to perfect as you can get.

The TV-7( ) series tube checkers are, by any standard, arguably the most usable and reliable of the tester of the lot. Parts are available and calibration, even the original TV-7, is doable in the average hamshack.

If you want one of the best all around electron tube testers made then this is it. The venerable TV-7D/U! Made for the military using the Hickok transconductance circuit. This tester will test any type of guitar or audio tube. One of the most relied upon vintage testers.

New SSTL Handle Assembly for TV-7 Tube Testers TV-7/U, TV-7A/U, TV-B/U. This ... more Stainless-Steel Handle assembly fits all the TV-7 series testers that use this style of handle.

Military TV-7 D/U Mutual Conductance Tube Testerwith an added mA meter for plate current readings, a new 200 uA meter for the tube tester, and in a new custom made wood case.

This TV-7D/U is exceptionally clean and has little signs of wear. Has all three of the military socket savers on the 7-pin min, noval, and octal sockets. This TV-7 D/U is perfectly calibrated so you will not have to worry about sending it to someone for calibration.