• Country
• United States of America (USA)

• Manufacturer / Brand
• Rola Company, The; Oakland, CA

• Year
• 1929

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 55253

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

• Number of Tubes
• 6

• Valves / Tubes
• 224 224 227 227 245 80

• Main principle
• TRF without regeneration

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 110 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 10 inch = 25.4 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: 90 - Rola Company, The; Oakland, CA

• Shape
• Console, Lowboy (legs < 50 %).

• Dimensions (WHD)
• 540 x 820 x 300 mm / 21.3 x 32.3 x 11.8 inch

• Notes

• 6 tube TRF with Rola L-160 10" EM speaker.

  See also Rola 90 230 volt export version.

• Price in first year of sale
• 129.00 $

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• Literature/Schematics (1)
• Gernsback Official Radio Service Manual (1931 Volume 2 Page 367)

• Other Models

• Here you find 12 models, 11 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Rola Company, The; Oakland, CA