Hello all, I'm new to this forum. I may not even be in the correct forum for a question like this, if anyone has a link for a better place for me to go, I would appreciate it. I have acquired an old tube radio at a garage sale. It just kind of looked at me and said "help me". I don't have any experience rebuilding electronics, especially antique stuff. I am handy with small parts and soldering. The radio is a Deforest Crosley built in 1937 and is a battery operated model. I don't really know what a B+ 135 volt battery looks like, I've never heard of anything like that. Is it possible to use a transformer to convert AC to what I need? I have ordered the wiring diagram, but don't have it yet. I am aware of issues with old electrolytic capacitors, some of the threads I have have read in this forum have made it apparent that they may have to go in favor of modern ones. That is OK with me, I'm not too concerned with keeping it all original, I just want it to work. If anyone has general advice for me for a project like this, please feel free to respond. Thanks. Norm