[R-390] Question for Historians

[Dave Faria]

GE List.  I'm working on a very nice Capehart 1961 contract.  All modules
are Capehart except the P.S.(Stewart-Warner) and the PTO(Progestron).  Did
Capehart ever make its own P.S. or PTO?

A techincal question - the PTO seems to be very sensitive to vibration.  I
know this PTO is built like the Collins but, don't recall a Collins PTO
being this sensitive.  I swapped out the 6BA6 and it helped some but, the
sensitivity to vibration is still there.  Its like the grids in the tube are
vibrating or a bad ground(I hope not).

Thanks List
Dave Faria