• Country
• United States of America (USA)

• Manufacturer / Brand
• Pittsburgh Radio Supply House; Pittsburgh, PA

• Year
• 1922/1923

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 216382

• • alternative name: McCullough

• Number of Tubes
• 1

• Valves / Tubes
• UV201

• Main principle
• Audio-Amplification; 1 AF stage(s)

• Wave bands
• - without

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

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

• Material
• Various materials

• from Radiomuseum.org
• Model: Adapter SP2 - Pittsburgh Radio Supply House;

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 5 x 3 x 3 inch / 127 x 76 x 76 mm

• Notes
• Pittsburgh Radio Supply House S-P-2 Adapter. Single-Stage slide in audio amplifier for the S-P-2 Receiver.

• Price in first year of sale
• 15.00 $

• Literature/Schematics (1)
• November 1922 Popular Radio magazine advertisement

• Author
• Model page created by Alan Larsen. See "Data change" for further contributors.

• Other Models

• Here you find 3 models, 2 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Pittsburgh Radio Supply House; Pittsburgh, PA