The Exelrad Air King dual wave was manufactured for Turnbull & Jones Ltd by Radio Corporation of New Zealand Ltd in about 1936.

The cabinet bears a sticker : "Made by Jackson & King, Holland St, Wellington".

The chassis has no identifying information. The circuit and chassis layout are identical with the Exelrad Air King 6-valve dual wave model of 1935, except for the valves which are 6.3V instead of 2.5V types.  Note that the circuit and chassis layout are different from the 1936 Exelrad models 6D and 6DXI.

This set has a silver plaque on the front stating: "Wellington Cricket Association - Presented to P.B Broad for services rendered to Wellington cricket 1921-1936"

Valves (6): 6D6, 6A8, 6D6, 6B8, 42, 80

Intermediate Frequency: 465 Kc/s

Frequency Bands: 2

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

Service information (Exelrad_Air_King_-_6V_DW_AC_-_1935.pdf) here

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.