• Country
• United States of America (USA)

• Manufacturer / Brand
• Kolster; USA

• Year
• 1929

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 45691

• • Brand: International

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

• Number of Tubes
• 9

• Valves / Tubes
• 24A 24A 24A 27 27 45 45 81 81

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown); Screengrid 1926-1935

• Tuned circuits
• 4 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 100-110; 110-120 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 11.5 inch = 29.2 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: K-44 - Kolster; USA

• Shape
• Console with any shape - in general

• Dimensions (WHD)
• 29 x 51.375 x 19 inch / 737 x 1305 x 483 mm

• Notes
• One dial (primary tuning control knob); push-pull af output stage.

• Price in first year of sale
• 260.00 $

• External source of data
• Ernst Erb

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

• Circuit diagram reference
• Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

• Mentioned in
• Collector's Guide to Antique Radios 4. Edition

• Other Models

• Here you find 104 models, 48 with images and 69 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Kolster; USA