• Country
• New Zealand-Aotearoa

• Manufacturer / Brand
• Columbus (Brand); Radio Centre Ltd.; Wellington

• Year
• 1938

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 355036

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 5

• Valves / Tubes
• 6A8 6K7 6B7 42 80

• Main principle
• Superheterodyne (common); ZF/IF 456 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast and Short Wave (SW).

• Power type and voltage
• Alternating Current supply (AC) / 50Hz, 230 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Challenger 85 - Columbus Brand; Radio Centre

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 18.25 x 10.75 x 8 inch / 464 x 273 x 203 mm

• Notes

• Columbus 85

  5-valve superhet dual wave, table model receiver.

  See also Columbus 85 with stepped cabinet and Courtenay Model 85. There were several cabinet, magic eye, and dial options used with the 85 chassis.

  Manufactured by Radio Corporation of New Zealand Ltd for Columbus Radio Centre Ltd.

• Author
• Model page created by Brian Stevens. See "Data change" for further contributors.

• Other Models

• Here you find 162 models, 123 with images and 151 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Columbus (Brand); Radio Centre Ltd.; Wellington