The Columbus 26N was manufactured for Columbus Radio Centre Ltd by Radio Corporation of New Zealand Ltd in about 1952.

The Columbus Exeter, a 5-valve broadcast-band only radio.  Believed to have been originally released as the model 26 with octal valves, then shortly afterwards as the 26N using miniature valves.  A permanent magnet speaker version, the 26P, also exists.

There is also a dual wave Exeter - the model 27, and later the 27N.

Valves (5): 6BE6, 6BA6, 6AV6, 6AQ5, 6X4

Frequency Bands: 1

Chassis Notes(most schematics can be clicked to download a full size version) Uses miniature valves (the 'N' designation is in keeping with RCNZ sets around this era that used them).  Has gram input from factory.

RCNZ model 26N 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 (4 in total)

1952Columbus 26N - this set
1952Courtenay 26N
1953Courtenay 26P
1953Columbus 26P