• Year
  • 1959
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 72380
    • alternative name: Chicago Radio Lab

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

 Technical Specifications

  • Number of Tubes
  • 7
  • Main principle
  • Superhet with RF-stage; ZF/IF 455/10700 kHz
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • Power type and voltage
  • Alternating Current supply (AC) / 110 - 120 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm
  • from Radiomuseum.org
  • Model: B728W Ch= 7A03 - Zenith Radio Corp.; Chicago,
  • Shape
  • Tablemodel with Clock ((Alarm-) Clock Radio).
  • Dimensions (WHD)
  • 13.375 x 7.5625 x 7.8125 inch / 340 x 192 x 198 mm
  • Notes
  • The Zenith Modell B728W is an AC Operated AM-FM Superheterodyne Receiver with Electric Clock and the ability to operate appiances with up to 1100 watts.

    The following models use the same schematic and cabinet but have different cabinet colors.

    Model

    Cabinet Color

    B728C

    Charcoal Black

    B728F

    Pine Frost Green

    B728W

    Snow White

  • Circuit diagram reference
  • Beitman Radio Diagrams Vol. 19, 1959

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