Does anyone have a schematics or any tube testing information on a Precise Model 111 tube tester. Recently I got one off of e-bay and it needs some work. It has two tubes in it. One is a 6X4 and I think the other tube is a 5U4 but the lettering has been worn off the tube. Thanks for any help.

Ross

I could copy the schematic and "calibration" instructions. The quotation marks mean "good luck," as the manual is unbelievably bad. However it is possible to figure out which pots do what, and to get the Gm ranges close enough. Yes, it's a 5U4.

Send me an email with your snail address. Postage would be less than a buck.

adouglas@gis.net

I have the manual and a tube chart, e-mail me

Dave