The Columbus model 44 was manufactured for Columbus Radio Centre Ltd by Radio Corporation of New Zealand Ltd in 1948.

A good performing 6-valve set plus magic eye all-wave radio which used a 10½" eliptical permanent magnet speaker developed out of step with the circular electromagnetic speakers that RCNZ were using in most sets at this time - this was the flagship model of this series at the time and incorporated other new features such as a tuned filter in the power supply, and a 6V6 rather than the 6F6 other RCNZ sets were using.  Big brother of the model 34 Oxford.  There was also a model 61 dual-wave set in this series.

1948 Columbus model 44

Valves (6 + magic eye): 6K7, 6K8, 6B8, 6SJ7, 6V6, 5Y3 and Y63 Magic Eye

Intermediate Frequency: 455kc/s

Frequency Bands: 3

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

1948 Columbus model 44

1948 Columbus model 44

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.