6-valve broadcast band dual-power portable radio. Mains or battery, internal loop aerial.
Made by Radio Corporation of NZ and also sold as the Columbus model 402
Valves (6 (or 5)):
1N5, 1A7, 1N5, 1H5, 1A5, 1A5
1N5, 1A7, 1N5, 1H5, 3Q5 (s/n 84401 onwards)
1T4, 1R5, 1T4, 1S5, 3S4 (model 402A)
1T4, 1R5, 1T4, 1S5, 3V4 (model 402Z)
Intermediate Frequency: 455kc/s
Chassis Notes(most schematics can be clicked to download a full size version)
At least three variations on the base schematic - from serial number 84401 the original twin-parallel 1A5's are replaced with a 3Q5. And the 402Z appears to be an almost complete redesign around miniature valves.