[MrFixr55]

I know that this is an old thread but:
- The B+ values are common.
- You should be able to find a new transformer with at least one 2.5V winding in addition to the 5V and HV windings.
- For the 24A filaments, a center tap is not really needed. one leg of that winding can be grounded.
- If a transformer with a center tap for the 45 filament can't be found, an "artificial" tap can be made by putting 2 10 Ohm resistors in
series. The Junction is the center tap. Note that the current drawn by these 2 resistors (125mA) has to be accounted for when sizing
the resistors and the winding.
- In at least one radio I found (A Studebaker 31 TRF Radio (for 115V AC), all tubes are powered by the same winding. the winding is -
center tapped and the center tap is grounded through a 500Ohm resistor and 0.5uF capacitor to provide the bias necessary for the 47
tube.
- A power transformer from a Philco 70 would provide all windings and voltages needed.
- If really desperate and if only a non-tapped secondary for 2.5V tubes is available and you find the 22 10 Ohm resistors to not -
work, convert the 45 to a 2A5. It is not too hard. However, if this is the "Peter Pan" model, nothing other than the original
transformer will do, to protect the value of the radio.