- United States of America (USA)
- Manufacturer / Brand
- Zenith Radio Corp.; Chicago, IL
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- alternative name: Chicago Radio Lab
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- Main principle
- Superhet with RF-stage; ZF/IF 455 kHz
- Wave bands
- Broadcast plus more than 2 Short Wave bands.
- Power type and voltage
- Line / Batteries (any type) / 117/220 or 9 & 90 Volt
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5.25 inch = 13.3 cm
- Leather / canvas / plastic - over other material
- from Radiomuseum.org
- Model: TransOceanic R-520A/URR - Zenith Radio Corp.; Chicago,
- Portable set > 8 inch (also usable without mains)
- Dimensions (WHD)
- 17 x 11 x 8 inch / 432 x 279 x 203 mm
Radio Receiver R-520A/URR. Military version of a modified Zenith Transoceanic A600L series. Covered with Army Green oilcloth. No dial light. No retractable power cord. Production was only 2,973. The Zenith 220V Adapter was installed. This model was a special build radio for the Army Signal Corp in 1956 and not sold to the public. According to Bryant and Cones, this is the rarest of all Trans-Oceanics.
- Net weight (2.2 lb = 1 kg)
- 18 lb (18 lb 0 oz) / 8.172 kg
- Mentioned in
- The Zenith Trans-Oceanic (pages 84-87 for R-520/URR, page 153 for R-520A/URR)
- Literature/Schematics (1)
- -- Original-techn. papers. (TM 11-877 C1)
- Model page created by Freeman King. See "Data change" for further contributors.
- Other Models
Here you find 4353 models, 3977 with images and 3482 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Zenith Radio Corp.; Chicago, IL