U109

RCA (RCA Victor Co. Inc.); New York (NY)

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  • Year
  • 1937
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 54834
    • alternative name: RCA Manufacturing || Victor Talking Machine

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

 Technical Specifications

  • Number of Tubes
  • 16
  • Main principle
  • Superhet with RF-stage; ZF/IF 460 kHz
  • Wave bands
  • Broadcast plus 2 Short Wave bands.
  • Details
  • Changer (Record changer)
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 12 inch = 30.5 cm
  • Power out
  • 12 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: U109 - RCA RCA Victor Co. Inc.; New
  • Shape
  • Console with Push Buttons.
  • Dimensions (WHD)
  • 35.625 x 43 x 22.5 inch / 905 x 1092 x 572 mm
  • Notes
  • The RCA models U-108 and U-109 use the same schematic. They have a range of 530 to 1720 kHz for broadcast and 2.1 to 23.5 MHz for (2) short waves. They have motor tuning with AFC, dynamic amplifier control with volume expander and push-pull output.
    There are 5 sub-models with different input power requirements, each consuming 220 watts:
    A-6...105-125 volts, 60 cycles
    A-5...105-125 volts, 50 cycles
    B-2...105-125 volts, 25 cycles
    C-6...100-130/140-160/200-250 volts, 60 cycles
    C-5...100-130/140-160/200-250 volts, 50 cycles
    Each of them reaches naturally 60 cycles (hz).
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 9 = 1938 and before
  • Literature/Schematics (2)
  • RCA Victor Service Notes for 1937 (RCA Redbook)

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