• Country
• United States of America (USA)

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

• Year
• 1922/1923

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 212876

• Number of Tubes
• 4

• Valves / Tubes
• UV201 UV200 UV201 UV201

• Main principle
• TRF without regeneration; 2 AF stage(s)

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Broadcast only (MW).

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

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: Harko Sr. + RFTA + Two-Step Amplifier Combination - Crosley Radio Corp.;

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

• Notes
• This combination was proposed in an ad in "Radio Broadcast", August 1922 and in September 1922 in "Radio News". In the September ad Crosley features a total of 8 combinations. This combination of "Harko Sr." plus "R.F.T.A." plus "Two-Step Amplifier" is technically the same as a model X. The "2-Step A.F.Amp." has no front switch to select the number of active tubes but the combination can naturally also be done with the older model.

• Literature/Schematics (1)
• Radio Manufacturers of the 1920s, Vol 1 (Crosley ad on page 117.)

• Author
• Model page created by Ernst Erb. See "Data change" for further contributors.

• Other Models

• Here you find 1807 models, 1050 with images and 1301 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Crosley Radio Corp.; Cincinnati (OH)