• Country
• United States of America (USA)

• Manufacturer / Brand
• Roland Radio Corporation; Mount Vernon (NY)

• Year
• 1956

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 141393

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

• Number of Tubes
• 4

• Valves / Tubes
• 1R5 1U4 1U5 3V4

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries / 1.5 & 67.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm

• from Radiomuseum.org
• Model: 4P2-1 - Roland Radio Corporation;

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

• Notes
• The Roland Model 4P2-1 is a Battery Operated 4 Tube Portable AM Receiver.

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 2-57, Set 346, Folder 13)

• Author
• Model page created by Egon Penker. See "Data change" for further contributors.

• Other Models

• Here you find 68 models, 57 with images and 62 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Roland Radio Corporation; Mount Vernon (NY)