Trans-Oceanic R-7000 Ch= 2WKR70

• Country
• United States of America (USA)

• Manufacturer / Brand
• Zenith Radio Corp.; Chicago, IL

• Year
• 1979–1981

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 68890

• • alternative name: Chicago Radio Lab

• Picture
• Schematics

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

• Main principle
• Superhet with RF-stage; ZF/IF 10700/10700 kHz

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Line / Batteries (any type) / 120; D: 8 x 1.5 Volt

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

• Material
• Various materials

• from Radiomuseum.org
• Model: Trans-Oceanic R-7000 Ch= 2WKR70 - Zenith Radio Corp.; Chicago,

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

• Dimensions (WHD)
• 351 x 259 x 157 mm / 13.8 x 10.2 x 6.2 inch

• Notes

• Final and last Trans-Oceanic model, not to be confused with the Royal 7000, which is completely different!

  Built-in BFO for SSB reception, squelch for PSB and AIR bands, variable RF gain.

  Frequency Coverage:

  LW: 170 – 450 KHz, MW: 540 – 1610 KHz, SW 1: 1.8 – 4 MHz, SW 2: 4.0 – 7.5 MHz, SW 3: 7.5 – 10.0 MHz, SW 4: 11.0 – 15.5 MHz, SW 5: 15.5 – 22 MHz, SW 6: 22 – 30 MHz, SW 7: 26.9 – 27.5 MHz ( CB ! ), FM: 88 – 108 MHz, VHF AIR: 107.8 – 136.5 MHz, VHF HI (PSB) 143.5 – 174.5 MHz

  The R-7000 employed an innovative approach using the FM’s 10.7 MHz IF for all bands, effectively eliminating the problem of “images” in SW reception ( which fall at multiples of the IF frequency ) without the added complexity of going to a dual conversion design.

  Only one IF string was needed rather than two.

  Made in Taiwan by Zenith Taiwan Corp., a subsidiary of Zenith Radio Corp. Chicago, IL

  See also the article here.
  Siehe auch den Artikel hier.
  Si veda anche l'articolo in questa pagina.

• Net weight (2.2 lb = 1 kg)
• 6 kg / 13 lb 3.5 oz (13.216 lb)

• Price in first year of sale
• 379.95 USD

• External source of data
• Bryant/Cones

• Mentioned in
• -- Original-techn. papers.

• Author
• Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

• Other Models

• Here you find 4491 models, 4096 with images and 3595 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Zenith Radio Corp.; Chicago, IL