• Country
• New Zealand-Aotearoa

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

• Year
• 1935/1936

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 340266

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

• Number of Tubes
• 7

• Valves / Tubes
• 34 1C6 34 34 30 30 19

• Main principle
• Superhet with RF-stage; ZF/IF 456 kHz; 3 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast plus 2 Short Wave bands.

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 6 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 8 inch = 20.3 cm

• Power out
• 1 W (undistorted)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Gulbransen 7E [Genemotor] - Cromwell, Gulbransen NZ,

• Shape
• Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.

• Notes

• 7-Valve superhet with RF stage 3 band table tombstone receiver.

  Powered by 6 volt Genemotor Motor-Generator (not vibrator) to supply B+ power from a car storage battery.

  An export version of the US Wells-Gardner & Co.; Chicago, Model 7E.

• Source of data
• -- Collector info (Sammler)

• Mentioned in
• -- Original prospect or advert (Nelson Evening Mail 30 November 1935 Page 13)

• Literature/Schematics (1)
• Rider's Perpetual, Volume 9 = 1938 and before

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

• Other Models

• Here you find 114 models, 110 with images and 101 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