• Country
• New Zealand-Aotearoa

• Manufacturer / Brand
• Ultimate (Brand), Radio Ltd. & Radio (1936) Ltd.; Auckland

• Year
• 1937 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 343973

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

• Number of Tubes
• 6

• Valves / Tubes
• 6K7 6A8 6K7 6Q7 6F6 80

• Main principle
• Superhet with RF-stage; ZF/IF 250 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

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

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

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: Ultimate BDU [Tombstone] - Ultimate Brand, Radio Ltd. &

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

• Dimensions (WHD)
• 380 x 490 x 290 mm / 15 x 19.3 x 11.4 inch

• Notes

• 6-Valve superhet with RF stage dual wave tombstone receiver.

  See also Skyscraper BDR & Courier BDC.

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

• Other Models

• Here you find 153 models, 128 with images and 133 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ultimate (Brand), Radio Ltd. & Radio (1936) Ltd.; Auckland