• Country
• United States of America (USA)

• Manufacturer / Brand
• Perma-Power Co.; Chicago (IL)

• Year
• 1985 ??

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 222527

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Dry Batteries / 10 x 1,5 Volt

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

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Roving Rostrum S-112 & S-122 - Perma-Power Co.; Chicago IL

• Shape
• Tablemodel, with any shape - general.

• Notes
• Roving Rostrum by Perma Power Electronics Inc., Chicago, IL, Type S-112 & S-122; Portable PA System.

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 13 models, 9 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Perma-Power Co.; Chicago (IL)