• Country
• United States of America (USA)

• Manufacturer / Brand
• IBM; Armonk, N.Y.

• Year
• 1965 ?

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 225558

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

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Dry Batteries / 11.2 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Magnabelt 274 voice recorder - IBM; Armonk, N.Y.

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 155 x 45 x 120 mm / 6.1 x 1.8 x 4.7 inch

• Notes

• Dictation machine. Uses magnetic "sleeve" and Mercury battery.

   

   

• Net weight (2.2 lb = 1 kg)
• 1 kg / 2 lb 3.2 oz (2.203 lb)

• Author
• Model page created by Ulrich Engwicht. See "Data change" for further contributors.

• Other Models

• Here you find 18 models, 18 with images and 12 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from IBM; Armonk, N.Y.