• Country
• United States of America (USA)

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

• Year
• 1988/1989

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 79120

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Superhet, double/triple conversion; ZF/IF 55845/450 kHz

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

• Power type and voltage
• Dry Batteries / 6 x 1,5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 9 cm = 3.5 inch

• Power out
• 1 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Realistic DX-440 20-221 - Radio Shack Tandy, Realistic,

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

• Dimensions (WHD)
• 310 x 160 x 60 mm / 12.2 x 6.3 x 2.4 inch

• Notes
• AM coverage 150 - 29999 kHz; AM, SSB(BFO), 2 switchable bandwidths; keypad direct frequency entry, 9 memories; digital clock / timer, also sold as Sangean ATS-803A.

• Net weight (2.2 lb = 1 kg)
• 1 kg / 2 lb 3.2 oz (2.203 lb)

• Price in first year of sale
• 199.00 $

• Mentioned in
• Radio Shack Catalog (1988, No. 419, page 76.)

• 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