• Country
• United States of America (USA)

• Manufacturer / Brand
• advance schools, Inc.; Chicago, IL

• Year
• 1970 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 332703

• Number of Transistors
• 6

• Semiconductors

• Main principle
• Superheterodyne (common)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / C: 6 x 1.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: AM Radio 6 Transistor GRB-151-2 - advance schools, Inc.; Chicago

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

• Notes

• Similar to Heathkit GR-151B.

• Author
• Model page created by Aldo Andreani. 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 advance schools, Inc.; Chicago, IL