The Golden Knight model RU was manufactured for Farmers Trading Co. Ltd by Radio (1936) Ltd in 1947.

Other radios based on the same chassis:

5-valve broadcast band radio.

The first Radio Ltd model to use a bakelite cabinet.

The following article by Ian Sangster was taken from the NZVRS Bulletin, Volume 19, #3

1947 Ultimate RU

1947 Golden Knight RU

Bay of Plenty Times 23 September 1949

1947 Golden Knight RU 'Defender'
Gisborne Herald 27 October 1950

Technical Information

Valves (5): 7A8, 7A7, 7C6, 7C5, 5Y3GT

Intermediate Frequency: 460kc/s

Frequency Bands: 1

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

1947 Ultimate RU

General Construction Notes for Radio (1936) Ltd:

Early Radio Ltd. schematics did not show the models, just the year, valves and bands, so some sleuthing is required to find the right one.

Early 30's Ultimate models with three digit model numbers indicated both the number of valves in the set, and the price it retailed for - for example, the model 856 was an 8-valve radio which retailed for $56 pounds. The equivalent Courier models were reversed, so an Ultimate 856 was a Courier 568 (theoretically, at least). This was the Auckland price though, and often the sets would retail for 1 or 2 pounds more in other centres, presumably to cover the freight cost of moving them around the country from the Auckland factory.

Note the use of old resistance terminology on older schematics: ω means ohms and Ω means megohms.

Some 1936-onward 3-letter chassis codes vary the last letter between brands, for example:
BBU - Ultimate model BB
BBR - Rolls (and Golden Knight) model BB
BBC - Courier model BB
All use the same chassis.

Golden Knight, Courier and Rolls appear to use the same copper-painted chassis while Ultimate chassis' are painted silver

After the war a new model code system was introduced, whereby radio models all began with R - the first model being the RA, a dual-wave 5-valve set commonly released in a pressed tin cabinet.

Other documented models using this chassis (5 in total)

1947 Ultimate model RU
1947 Courier model RU 'Teal'
1947 Courier model RU
1947 Ultimate model RU