[Raleigh]

A good many tube radios, especially before the war, put the on-off switch on the tone control or on a separate switch altogether. I think this might have been so the volume would be at whatever comfortable level it was when you turned the radio off, and you didn't need to stand by to adjust the volume after the 15 to 30 second warm-up period.

Cheaper tube radios, especially after the war, put the switch with the volume control as most radios do now.