The Columbus model 24 was manufactured for Columbus Radio Centre Ltd by Radio Corporation of New Zealand Ltd in 1937.

5-valve broadcast band radio (no shortwave band).  Baby brother of the model 25.

Note - photo shows one of the two available cabinets - see the model 25 for the other style


Valves (5 + eye): 6A8, 6K7, 6B7G, 42, 80 and 6E5 magic eye on some models

Intermediate Frequency: 456kc/s

Chassis Notes (most schematics can be clicked to download a full size version):

Shallow / stretched chassis - not baking pan style. Uses 5" RCNZ EM speaker

RCNZ Model 24 Schematic

General Construction Notes for Radio Corporation of New Zealand Ltd: The first digit of the serial number typically indicates the year of manufacture of RCNZ chassis' (although not the decade - that requires a little knowledge of the valves, construction, etc). Sets from around 1934 onwards were often (but not always) constructed in a distinctive pressed 'baking pan' style chassis, seemingly unique to RCNZ.

All documented models using this chassis (3 in total)

1937Courtenay model 24
1937Stella model 24
1937Columbus model 24 - this set