Doughbroz
New member
Picked up a nice B&K 470 and made a CR-23 socket for it. Problem is, the WG 19K4606 I was going to try it out on is missing the tube model sticker, and so are two or three other 4600s I have lying around. I have also noticed the model stickers missing from a couple of other models. So the question is, how does one know where to set the heater voltage on the rejuvenator? If it helps, the resistance of the heater pins on the 4606 is 2.05 ohms, which includes 0.4 ohms resistance in the meter leads. The only problem with the tube is too much of one color and not enough of another, so the heater is not shorted. Any help appreciated.