COURTENAY MODEL 205 'EXPONAT' (1934)

The Courtenay model 205 was manufactured for Turnbull & Jones Ltd by Radio Corporation of New Zealand Ltd in 1934.
This model is part of the 1934 RCNZ Stepped Cabinet Mantle series of radios.

5-valve broadcast band mantle radio.

Similar to the Pacific model 105 (same chassis, different but similarly styled cabinet).

The Courtenay model 205 is part of the 1934 RCNZ Stepped Cabinet Mantle series of radios.

This was one of 4 known 1934 Radio Corp of NZ models in this style of case: the Pacific 105, the Courtenay Exponat, the Troubadour 5H and the Philips Radioplayer 5H.  The Pacific and Courtenay models share the same chassis based on American valves, while the Troubadour and the Philips models use Philips valves and have similar, but slightly different chassis'.

The radios in this series are:
1934 Philips 5H
1934 Pacific model 105
1934 Courtenay model 205 Exponat
1934 Troubadour 5H Tempo

Valves (5): 2A7, 58, 2B7, 2A5, 80

Intermediate Frequency: 175kc/s

Frequency Bands: 1

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

Radio Corp NZ Model 105 and 205

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).

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.

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).

All documented models using this chassis (3 in total)

YEARMODEL NAME
1934Pacific model 205
1934Pacific model 105
1934Courtenay model 205 - this set