• Country
• United States of America (USA)

• Manufacturer / Brand
• Radio Shack (Tandy, Realistic, Micronta); USA

• Year
• 1984–1986

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 79106

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

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Superhet, double/triple conversion

• Wave bands
• Broadcast, Long Wave, more than 2 x SW plus FM or UHF.

• Power type and voltage
• Dry Batteries

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

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Realistic DX-400 20-207 - Radio Shack Tandy, Realistic,

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes
• covering 150 - 29999 kHz, AM, SSB (BFO); digital frequency readout, direct keypad frequency entry & frequency up and down buttons, six memories, analog signal strength meter; similar model Uniden CR-2021 has LED signal strength indicator

• Net weight (2.2 lb = 1 kg)
• 1.6 kg / 3 lb 8.4 oz (3.524 lb)

• Price in first year of sale
• 299.95 $

• Mentioned in
• Radio Shack Catalog (1984, No. 367, page 79; 1985, No. 380, page 94.)

• Author
• Model page created by Martin Bösch. See "Data change" for further contributors.

• Other Models

• Here you find 1299 models, 1181 with images and 117 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Radio Shack (Tandy, Realistic, Micronta); USA