Other radios based on the same chassis:
Pacific art-deco 6-valve dual wave tabletop radio.
This cabinet was apparently also used on an earlier model with an arc-dial (please get in contact if you can supply photos of that model), and also on the later model 21. The later use was most likely to use up remaining cabinet stocks.
The Raleigh typically was fitted with the 6-valve dual wave chassis developed by Radio Corporation of New Zealand for the 1935 year. This chassis was effectively a dark-gold-painted version of that found in the Courtenay model 108.
The cabinet looks to have been (at least in all sighted original finish models) finished in three shades - dark on the bottom portion, medium on the left side, lower right side and left (lower) top portion and a lighter shade around the dial and up over the top of the speaker surround. The speaker grill surround is chromed.
The displayed model above was found in a private museum (of sorts) in a small Central Otago town, atop an old crate and supporting a few scrap lengths of 4x2 which straddled it and an old Gulbransen model 756. The timber atop these two radios was, in turn, holding up one end of an elaborate and vintage model train diorama. The author had been in for a look at some other radios and almost missed it, but fortunately the owner was not that attached to it, and had another radio they could swap in to hold up the railway - and so a deal was reached to rescue it.
Upon extraction it was found to be fitted with a very badly hacked around AC-mains-modified original Pacific 7-valve battery chassis - despite the original Pacific label in the cabinet suggesting it had, at one time, been an AC mains set. It had been very roughly converted using late model (50's) parts and given the appaling condition of the chassis and how bad the conversion had been done, one could only assume that a hacksaw and a hammer were the only tools available.
It will, in time, be returned to a fully working and restored 6-valve dual wave set.
There were 7 main models of radio released by Pacific Radio Co. in 1935, or to be more precise there were 3 models of AC mains chassis (and several battery and vibrator models), fitted to one of 7 main cabinet styles (with the occasional oddball showing up in the mix).
The predominant chassis was the 6-valve dual-wave, with a 7-valve dual wave and a 5-valve broadcast version available as well.
The radios in this series are:
In 1934 and 1935 Pacific produced some truly magnificent cabinet designs. A few of these were particularly Art Deco inspired and worthy of special mention.
The radios in this series are:
Valves (5, 6 or 7):
6A7, 6D6, 6B7, 42, 80
6-valve dual wave
58, 2A7, 58, 2B7, 2A5, 80 (2.5V series)
6D6, 6A7, 6D6, 6B7, 42, 80 (6.3V series)
7-valve dual wave with RF sub-chassis
6D6, 6A7, 6D6, 6D6, 75, 42, 80
Intermediate Frequency: 256kc/s (possibly 465kc/s in 7-valve?)
Frequency Bands: 2
Chassis Notes(most schematics can be clicked to download a full size version)
The 1934/35 range of Pacific radios were available in 5-, 6-, and 7-valve options (and some versions of battery sets as well). The 5-valve was broadcast-band only, while the 6 and 7 valve models were dual-wave. All were built by Radio Corporation of New Zealand in Wellington.
The most common was the 6-valve dual-wave chassis, in a near-standard 'baking pan' design, with dark metallic gold paint rather than the usual cadmium plating (this was the last year that this chassis colour was used). Also notable were the square 'tabs' on the corners of the chassis rather than the usual rounded corners found from the following year. The 5-valve option was probably similar / the same as the model 15, and the 7-valve is similar to one or other version of the model 11 7-valve chassis.
These were the first mainstream Pacific models with an aero (round) dial. On early versions this dial assembly is square behind a round escutcheon and has a flat clear plastic lens attached to the assembly. Later models use a simpler round assembly with just the dial riveted to a round ring, and the clear lens (which is slightly domed) is fitted into the escutcheon.
Electrically they are identical to the Courtenay 108 circuitry. The Courtenay uses 2.5V valves in all sighted models while the Pacific sets uses 2.5V valves only in the earliest examples, with most appearing to be fitted with 6.3V equivalent valves.
A common fault (aside from the usual things like capacitors) in this chassis seems to be the 55 ohm resistor (wirewound on a flat former and soldered to the speaker socket) going open circuit. Here you can see the simple fix for this, although it would pay to ensure the original resistor is not intermittent, as this could halve the resistance (and mess up the biasing of the set) if it cuts back in - cutting the wire on the former at one end and pulling it away from the rivet would ensure this doesn't occur.
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. 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).
|1935||Pacific 6 Valve Dual Wave|