• Country
• United States of America (USA)

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

• Year
• 1935

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 68057

• • alternative name: Chicago Radio Lab

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

• Number of Tubes
• 10

• Valves / Tubes
• 6D6 6A7 76 6D6 6D6 75 42 42 42 5Z3

• Main principle
• Superhet with RF-stage; ZF/IF 485 kHz; Export model

• Tuned circuits
• 9 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and more than two Short Wave bands.

• Power type and voltage
• Alternating Current supply (AC) / 25-133 cycles, 115-260 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 25 cm = 9.8 inch

• Power out
• 5.5 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 834A Ch= 1002 - Zenith Radio Corp.; Chicago,

• Shape
• Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.

• Dimensions (WHD)
• 470 x 570 x 320 mm / 18.5 x 22.4 x 12.6 inch

• Notes

• According to the name plate, the set consumes 130 watts. This model with suffix A seems to be an export model. Domestic models are normally for 60 cycles and 105 to 125 volts.

  5 bands:

  LW - OL- green- 150 kHz-425 kHz
  MW - OM- black- 525 kHz-1600 kHz
  SW1 - OC1- red- 1600 kHz-4000 kHz
  SW2 - OC2- brown- 4000 kHz-11000 kHz
  SW3 - OC3- blue- 9000 kHz-22500 kHz

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 10 = 1939 and before

• Other Models

• Here you find 4439 models, 4070 with images and 3531 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Zenith Radio Corp.; Chicago, IL