[DKinYORKpa]

Factor in today's higher line voltages, and this is why your voltages are reading higher than they did in 1930.

OK, but, when I look in my RCA tube book and see 175VDC maximum
on a 45 plate, did they come up with that number on an old meter, as well?

And nobody took on this one:

if you look at cap #11, it's supposed to go to the coupling caps on the 3rd and 4th RF transformers. It does not and doesn't appear to have ever. What am I missing here?

http://www.nostalgiaair.org/Resources/838/M0013838.htm