Musical Instruments: Matched Pair 6N3 Vacuum Tubes Fully-Tested - Peking Electron Tube Factory

Musical Instruments: Matched Pair (2 Tubes) GE JAN 5670W Fully-Tested Vacuum Tubes 6N3, 6N3P, 2C51 5670 396A Tube Upgrade / Replacement - GE

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Hickok 752 Tester Popular Q&A

Q: What are the differences between the Hickok 539B and the 539C tub...
A: The two units are practically identical. the 539-C replaced the older one in the early sixties. The two lowest ranges on the micromho function were deleted. pro... Read More »

Q: Where can I download a manual for a Hickok 539B tube tester?
A: Radiola Guy sells them direct (non-eBay) http://www.radiolaguy.com/Manuals/Hickok…. The Raymond Sarrio Company has them, too: http://www.sarrio.com/sarrio/rsman... Read More »

Q: Is it actually a re-branded Hickok 533 or a 752?
A: Here's some photos: Controls are placed differently but it looks like it matches a 533A. Just a guess but are the P1, P2, P3, etc. pushbuttons for testing plate... Read More »

Q: Hickok 752A Calibration/schematic??
A: Somebody has replaced the line adj pot (not the line adj control, but the smaller calibration one on a tag board with the rest of the cal pots), and I'm not sur... Read More »

Q: Where can I download a manual for a Hickok 539B tube tester?
A: I don't meticulousness for ebay and would rather have another option. I have a manual for the 539C tester but am not sure if they are exactly the same. Radiola ... Read More »

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