• Country
• United States of America (USA)

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

• Year
• 1951 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 135982

• • alternative name: Chicago Radio Lab

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

• Number of Tubes
• 7

• Valves / Tubes
• 6BJ6 12AT7 6BJ6 12BA6 12AU6 19T8 or 19C8 35C5

• Main principle
• Superhet with RF-stage; ZF/IF 455/10700 kHz

• Tuned circuits
• 7 AM circuit(s)     9 FM circuit(s)

• Wave bands
• Broadcast (BC) and FM or UHF.

• Power type and voltage
• AC/DC-set / 117 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 7.5 inch = 19.1 cm

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: H725Z1 Ch= 7G01Z1 [walnut] - Zenith Radio Corp.; Chicago,

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 15 x 9 x 8 inch / 381 x 229 x 203 mm

• Notes

• This model has a loop antenna and also was available with a green or gray cabinet.  

  Note:  The Riders schematic reference is for model H725.  Thus, the schematic for this model may be slightly different.

• Net weight (2.2 lb = 1 kg)
• 11 lb 11 oz (11.687 lb) / 5.306 kg

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 12-58, Set 423, Servicer)

• Literature/Schematics (2)
• Rider's Perpetual, Volume 22 = covering 1951 (pages 23 - 26)

• Author
• Model page created by Arpad Roth † 27.3.17. See "Data change" for further contributors.

• Other Models

• Here you find 4513 models, 4102 with images and 3644 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Zenith Radio Corp.; Chicago, IL