• Country
• United States of America (USA)

• Manufacturer / Brand
• Coastwise Electronics, Los Angeles

• Year
• 1947 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 289318

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

• Material
• Metal case

• from Radiomuseum.org
• Model: Test Speaker The Ferret 721 - Coastwise Electronics, Los

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

• Dimensions (WHD)
• 10 x 10 x 6 inch / 254 x 254 x 152 mm

• Notes

• The Ferret Model 721 is a test speaker as described in the article from Radio Maintenance, July 1947.

• Price in first year of sale
• 29.95 USD

• Mentioned in
• Radio Maintenance, July 1947, pages 14 and 16

• Author
• Model page created by Aglef Tröger. See "Data change" for further contributors.

• Other Models

• Here you find 3 models, 3 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Coastwise Electronics, Los Angeles