• Year
  • 1963
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 105968
    • 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
  • Superheterodyne (common); ZF/IF 455/10700 kHz; 2 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)     10 FM circuit(s)
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • Power type and voltage
  • Alternating Current supply (AC) / 117 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: K725B Ch= 7K06 - Zenith Radio Corp.; Chicago,
  • Shape
  • Tablemodel without push buttons, Mantel/Midget/Compact up to 14
  • Notes
  • Zenith introduced an early K725 model in 1952 and a version with "tube Saver" in 1953 - and 10 years later this family of quite different models (in case and chassis), K725B, K725C, K725L and K725W with the same chassis and case - in the different colors. We call them "late" since one might not see the suffixed letters on the model. Please be careful where to place your pictures. Thank you.
  • Mentioned in
  • Sam's, Folder 12 , Set 653

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