The Columbus model 54 was manufactured for Columbus Radio Centre Ltd by Radio Corporation of New Zealand Ltd in 1939.

1939 5-valve radio plus magic eye, with pushbutton tuning.

Valves (5 + magic eye): 6K8G, 6K7G, 6B8G, 6F6G, 5Y3G and 6U5 Magic Eye

Intermediate Frequency: 456kc/s

Frequency Bands: 1

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

1939 Columbus model 54

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 (2 in total)

1939Columbus model 54 - this set
1939Courtenay model 54