[Hammarlund] HQ-180A power supply question

[Craig Roberts]

Does anyone have a schematic for an HQ-180A (not an older 180)handy?

If so, can you tell me if this receiver (the 180A) uses an OA2 voltage
regulator?  If so, does it also use a full wave bridge rectifier with four
diodes?

The reason I'm asking is that my HQ-170A VHF was apparently upgraded by a
former owner to incorporate several factory mods. It also, as I mentioned a
couple of weeks ago, has a four-diode rectifier circuit and uses an OA2
regulator, even though the schematic specifies two diodes and an OB2. I'm
wondering if this radio's power supply was modified to match that of a late
HQ-180A.

I've downloaded the HQ-180 schematics from the BAMA, but they're early
charts that still show depict a tube rectifier -- so I have no reference to
the later model.

Many thanks and 73,
Craig
W3CRR