• Country
• United States of America (USA)

• Manufacturer / Brand
• Products of Progress, Inc.; New York, NY

• Year
• 1963 ??

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 202925

• Number of Transistors
• 2

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Tape Recorder

• Power type and voltage
• Dry Batteries / 2x 1,5 & 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5.5 cm = 2.2 inch

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: RMB 510 - Products of Progress, Inc.;

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 220 x 70 x 150 mm / 8.7 x 2.8 x 5.9 inch

• Net weight (2.2 lb = 1 kg)
• 0.6 kg / 1 lb 5.1 oz (1.322 lb)

• Source of data
• - - Data from my own collection

• Author
• Model page created by Jose Mayoral-Diaz. See "Data change" for further contributors.

• Other Models

• Here you find 1 models, 1 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Products of Progress, Inc.; New York, NY