The Columbus model 62 was manufactured for Columbus Radio Centre Ltd by Radio Corporation of New Zealand Ltd in 1940.

Other radios based on the same chassis:

6-valve dual-wave set using Osram valves. 

2 different cabinet styles (and a tablegram version of one) sighted, the one with the two vertical veneer inlay strips on the left side is 'recycled' from a previous model (it was used as one of many different cabinet options for the model 35) - and the chassis sits on blocks to line up properly.  The other cabinet was later recycled into several models including the 26n, 27 and 32.

This model uses wooden knobs with the Columbus ship pressed into them that RCNZ must have made specifically for the model 62, as they do not appear on any other known models.  The two inner knobs have scalloped sides - one is for the band switch so this would provide better purchase for switching, the other is for tuning and wouldn't have required the scalloping so it may have just been done for symmetry.

Technical Information

Valves (6): KTW61, X65, KTW61, DH63, KT61, U50

Intermediate Frequency: 455kc/s

Frequency Bands: 2

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

1940 Columbus model 62

1940 Columbus model 62

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.

Model codes beginning with a 0, for example the model 051, are Osram valve versions of the model without the leading 0. Technically the 0 should be an O (for Osram), however the digit 0 was used throughout the site before this fact was discovered.

The E suffix indicates a magic eye option is fitted (in models which were available with or without, such as the model 25).

A and B suffixes appear to be simply updates to the current model, R also appears to be simply an updated model ('R'edesign, perhaps?)

P indicates either a permanent magnet speaker version of a model which also came with an electromagnet speaker (the model 26 for example), or a portable model (like the model 694P).  This suffix was used in the mid 50's when Radio Corp was changing over.

N and M indicated miniature valve versions of a model which started with all (or a mix, ie: model 5) of larger valves. One of these two codes may indicate a transitional mixture of octal and miniature - clarification is required.

S often indicates a stereo model.  It can also indicate 'self-biased' in the transition period between back-biased and self biased sets where there were models with both methods employed (53S for example)

Finally, other suffixes and prefixes make occasional appearances in the RCNZ lineup - like the 66W (a variant of the long-running model 66) and the 75XA (a 10-valve version of the model 75 with a separate amplifier chassis).

Model nicknames are often sourced from either newspaper advertising, company literature or the NZ Radio Traders Federation official trade-in price books (Particularly Courtenay models from this publication)

In 1954, model numbering changed, to begin with the number of valves (ie: 501 - 5 valves, 1006 - 10 valves, etc) although the final 2 digits don't appear to have much significance.  Middle digits of 5 (portable) or 6 (mantle, including clock radio) are used on the AWA-designed plastic-cased sets.

Other documented models using this chassis (2 in total)

1940 Courtenay model 62