• Country
• United States of America (USA)

• Manufacturer / Brand
• Johnson Company, E.F.; Waseca, MN

• Year
• 1956

• Category
• Amateur Equipment (Other, but not Key)

• Radiomuseum.org ID
• 99811

• • Brand: Viking

• Number of Tubes
• 2

• Valves / Tubes
• 12AX7 12AU7

• Wave bands
• Wave Bands given in the notes.

• Loudspeaker
• - For headphones or amp.

• from Radiomuseum.org
• Model: 250-25 Signal Sentry - Johnson Company, E.F.; Waseca,

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

• Dimensions (WHD)
• 3.7 x 3.5 x 3.3 inch / 94 x 89 x 84 mm

• Notes
• Covers all bands; for convenient monitoring of either phone or CW transmissions.

• Price in first year of sale
• 19.00 $

• Literature/Schematics (1)
• Allied Radio Catalog Nº 150, 1956

• Author
• Model page created by Vitor Oliveira. See "Data change" for further contributors.

• Other Models

• Here you find 66 models, 56 with images and 29 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Johnson Company, E.F.; Waseca, MN