I am revamping one of these. I t was made in July of '60. Does anyone out there have calibration data. I am familiar with the calibration on the 600-800 hickok series but this tester has a couple of internal pots in addition to the slider resistors. Thanks in advance ---Tom

Might review this thread that asked the same question:
http://www.diyaudio.com/forums/tubes-va ... ation.html
http://174.122.4.235/~antiquer/forums/v ... 8&t=140350

Haven't seen a calibration document specific to the 752, but should be able to use Daniel schoo's document and adapt to the 752 and look at the schematic for effect of pots.

Thanks for your leads. I think it is possible it extrapolate calibration using a synopsis of the schematic and Daniel Schoo's article. If I come up with a workable sensible procedure I shall post it.

See the 752A thread about the 6L6 and 6SK7 that traveled the US and Canada a few years ago to those with overhauled and calibrated testers.

Carl

You might ask Steve Johnson. He has a pretty extensive data base and he's on this site.

I've got manuals, schematics, and obsolete tube data for it but no cal info.