Here is what the power supply needs to do:

Input: 117 vac
Outputs: (12.6 vac @ 5.5A), (650 vdc @ 300mA average - 500 mA peak),
(250
vdc @ 175 mA), (-45 to -65 vdc for bias)

If any of you have something to sell me that will get me there, please let
me know (with details).
===========================
An 'all in one' transformer might be difficult to find ; however since it is
assumed the unit is in a separate enclosure ,you can implement the power
supply unit with up to 4 separate transformers which no doubt can be found
at various ham fleamarkets .
The biasvoltage can probably be obtained through a separate diode and zener
voltage
circuit ,using the transformer supplying 250V @175 mA ,which would enable
you to implement with a maximum of 3 transformers.
Good luck with your quest.

Frank GM0CSZ / KN6WH