Roberts Valve RMB

This is a nice valve portable set. Mains or battery operation. It dates from around mid 1950s and uses the new range of “D” low power valves, having 1,5V heaters and an HT supply of 90V. DK96, DF96, ...
This is a nice valve portable set. Mains or battery operation. It dates from around mid 1950s and uses the new range of “D” low power valves, having 1,5V heaters and an HT supply of 90V. DK96, DF96, ...