The Courtenay model 166 was manufactured for Turnbull & Jones Ltd by Radio Corporation of New Zealand Ltd in 1949.

6-valve dual-wave radio - replacement for the model 66, which was in production for many years. 

Released in a table radio and tablegram, as well as some radiogram models.

At least three known chassis variants - 166, 166R and 166M, also with horizontal and vertical (radiogram) dials.

Valves (6):
166: 6U7G or 6K7, 6K8G, 6U7G or 6K7, 6B8G, 6V6GT, 5Y3
166R: 6SK7, 6K8, 6K7, 6G8, 6V6, 5Y3
166M: 6BA6, 6BE6, 6BA6, 6AV6, 6AQ5, 6X4

Intermediate Frequency: 455kc/s

Frequency Bands: 2

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

1949 Courtenay model 166

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.