As MrChips said, both early UK and N.A. installations did not have an appliance grounding system in place for outlets etc, the Radio in question is isolated from the mains AC via the input transformer.
Max.
There were many example in the UK pre/post-war where people ran appliances such as irons, radios and other appliances off of the light socket, they had no choice as the place they lived did not have any sockets at all!.l--don't really know why,although some early radios were run off light sockets.
.
That was actually "Now" considering nibbling an IEC socket...I hated ditching the original cable, but not considering nibbling an IEC socket into the
back of the chassis
Somehow, I can't get past the thought of electrocution.Well the future of radio for me, is this lovely item sitting on top of a 1U cabinet
that has a cutout on top, inside a rack mount cabinet with glass door,
with some new audio sources
http://www.youtube.com/watch?v=HeVlHtfaIo8
by Aaron Carman
by Duane Benson
by Duane Benson