[Ron Ramirez]

I misspoke on the chassis ground potential. Chassis ground on many Philco sets is slightly positive in relation to the set's B- due to the use of a bias resistor in the power supply. In other words, the most negative spot in the set is B-, the center tap of the set's power transformer's high voltage secondary. Still, not enough to produce any sort of shock.

But always remember, safety first. I wouldn't fool around with a live radio while standing in water on the concrete floor of a partially flooded basement, for example.