• Country
• United States of America (USA)

• Manufacturer / Brand
• Crosley Radio Corp.; Cincinnati (OH)

• Year
• 1922/1923

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 76420

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

• Number of Tubes
• 2

• Valves / Tubes
• UV201 UV201

• Main principle
• Audio-Amplification; 2 AF stage(s)

• Wave bands
• - without

• Power type and voltage
• Storage and/or dry batteries

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Wooden case

• from Radiomuseum.org
• Model: Two-Stage A.F. Amplifier 2-Step A.F.Amp. [without front switch] - Crosley Radio Corp.;

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Notes
• This model as second version of "Two-Stage A.F. Amplifier", sometimes called also "2-Step A.F.Amp." has no front switch to select the number of active tubes.
  Rider's schematic (without switch) calls it 2-Step Amp., but Crosley advertised Two-Stage Amp. (see Douglas) The first "Two-Step Amp" had a front switch as advertised by Crosley. Riders is insofar in error.
  In the September 1922 QST advertisement for Crosley this amp was referred to as the "Crosley Two-Stage Audio Frequency amplifier" in one picture and then the "Two-Step Amplifier" in the cut with the Harko Senior No. V.

• Price in first year of sale
• 25.00 $

• Mentioned in
• Radio Manufacturers of the 1920s, Vol 1 (pp.116, 117)

• Literature/Schematics (1)
• Rider's Perpetual, Volume 2 = 1932 and before

• Literature/Schematics (4)
• August 1922 Radio Broadcast magazine

• Author
• Model page created by Hilmer Grunert. See "Data change" for further contributors.

• Other Models

• Here you find 1773 models, 1042 with images and 1257 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Crosley Radio Corp.; Cincinnati (OH)