PACIFIC 6 VALVE DUAL WAVE (1935)

The Pacific 6 Valve Dual Wave was manufactured for Pacific Radio Co. by Radio Corporation of New Zealand Ltd in 1935.

In late 1934 the new 1935 range was released by Pacific Radio Co.  It consisted of several chassis models which were all quite similar to their Courtenay counterparts although, unlike the Courtenay, Pacific displayed no model code on the chassis making them difficult to identify.  Generally, they used a label on the inside of the cabinet describing the chassis - the most common being the 6 Valve Dual Wave (although one incorrectly printed label also refers to it as the 6 Wave Valve Dual). 

1935 Pacific Radio - Dial layout   The 1935 range can be identified by the dial, the first aero (round) dial in the Pacific lineup - previous models having either used a peephole or arc dial.  The 1935 dial is monochromatic - black on yellow celluloid with a plain escutcheon common to the Courtenay models as well. It can be differentiated from the following (1936) year dial which was similar, but it used red for the planet and had a custom Pacific-branded escutcheon.

There were a range of cabinet styles for the 1935 year (some, like the Raleigh were carried over from the previous year), and the models for 1935 are catalogued under those names:

1935 Pacific Carmen

1935 Pacific Raleigh

1935 Pacific Drake

1935 Pacific Nottingham

1935 Pacific Elite

1935 Pacific Burleigh

1935 Pacific Leicester

It should be noted that these cabinet styles were used for all chassis types in 1935, so refer to the label or the actual chassis to determine what service info to use.

Valves
5-valve Broadcast
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.
Pacific 6-valve Dual-Wave Schematic

 

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.

1935 Pacific Elite

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 (10 in total)

YEARMODEL NAME
1935Pacific Elite
1935Pacific Raleigh
1935Pacific Nottingham
1935Pacific Carmen
1935Pacific Drake
1935Pacific Burleigh
1935Pacific Leicester
1935Pacific 6 Valve Dual Wave - this set
1935Pacific Elizabeth
1935Pacific Sherwood