Bad News for me

[Electronic M]

Originally Posted by dieseljeep

RCA's CTC5 and early production CTC7's used 5U4's.
The Motorola TS905 had two 5U4's. The GE 21CL??, used three. The earliest Admirals, Philcos and Westinghouse used them, as well.
Actually, the Philco used a higher current pair of rectifier tubes, 5AW4 and 5V3.
I like using the rectifier tubes in the earlier designs.

I'm aware of the RCAs use of rectifier tubes in later sets (not so much the other brands though) that is why I said the 29JC was the only set they [Zenith] made that way. I like the use of tube rectifiers a lot better than seleniums, but I think I like silicon power rectifiers a bit better in terms cheapness and simplicity when replacing in the course of restoration.