> Yup. From what I can see, I would have to build a testing chassis with > the right setup for each tube type. Then crank it up and put a signal through > the tubes. Seems I'm not going to learn much with the meter but it > was worth a try. Did you read my previous posting on this thread ? You can test most tubes with only 24V anode voltage and the correct filament voltage. You can perform comparative tests between known good and suspected tubes with this setup. Peter -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist