• Country
• United States of America (USA)

• Manufacturer / Brand
• Radio Instruments Co.; Washington D.C.

• Year
• 1922

• Category
• Radio module post 1925 (not a part, not a key)

• Radiomuseum.org ID
• 192222

• Number of Tubes
• 5

• Valves / Tubes
• UV201 UV201 UV200 UV201 UV201

• Main principle
• Detector with Vacuum Tube (Valve), no tuner; 2 AF stage(s); Special type of reception - please describe.

• Wave bands
• Wave Bands given in the notes.

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

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: Radio-Audio Detector Amplifier Type JM-5 - Radio Instruments Co.;

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

• Dimensions (WHD)
• 16 x 8 x 9 inch / 406 x 203 x 229 mm

• Notes
• Radio Instruments Co. Type JM-5 Radio-Audio Frequency Amplifier. 2 RF - Audion det. - 2 AF. Untuned Passband 170 - 450 or 400 - 1200 or 900 - 3000 metres, depending on RF transformers used. Separate tuner required. Excellent results were obtained with a variometer and a variable condenser in parallel with a loop antennae tied to the grid and filament terminals of this unit.

• Price in first year of sale
• 130.00 $

• Literature/Schematics (1)
• Radio Dealer Oct. 1922

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

• Other Models

• Here you find 3 models, 3 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio Instruments Co.; Washington D.C.