• Country
• New Zealand-Aotearoa

• Manufacturer / Brand
• Cromwell, Gulbransen (NZ), Pacemaker, (Brands) Clarke, H. W.; Wellington

• Year
• 1940

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 366400

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

• Number of Tubes
• 5

• Valves / Tubes
• 6A7 6D6 6B7 42 80

• Main principle
• Superheterodyne (common); ZF/IF 465 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) / Ø 8 inch = 20.3 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: Gulbransen Clipper 425 - Cromwell, Gulbransen NZ,

• Shape
• Tablemodel, with any shape - general.

• Notes

• Gulbransen 425 Clipper

  5-valve dual wave superhet mantel receiver.

  See also Cromwell 520 Success and State 520 with similar chassis.

  Manufactured by Collier & Beale Ltd.

• Mentioned in
• More Golden Age of Radio (Page 102)

• Literature/Schematics (1)
• -- Original prospect or advert (Hauraki Plains Gazette 18 October 1940 Page 4)

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

• Other Models

• Here you find 145 models, 142 with images and 132 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Cromwell, Gulbransen (NZ), Pacemaker, (Brands) Clarke, H. W.; Wellington