9W78 Ch= RC-1084A

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

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  • Year
  • 1948 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 54097
    • 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
  • 7
  • Main principle
  • Superheterodyne (common); ZF/IF 455/10700 kHz
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • Details
  • Changer (Record changer)
  • Power type and voltage
  • Alternating Current supply (AC) / 115 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 12 inch = 30.5 cm
  • Power out
  • 5 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 9W78 Ch= RC-1084A - RCA RCA Victor Co. Inc.; New
  • Shape
  • Console, Lowboy (legs < 50 %).
  • Dimensions (WHD)
  • 30.5 x 32 x 17 inch / 775 x 813 x 432 mm
  • Notes
  • The chassis RC-1084A is shown in a schematic (from 1949?) for the models A78 and 9W78. On the same document one can see a cabinet which there is called PH 471. For neither name a Rider's, Photofact or Beitman could be found. The radiogram consoles mentioned here receive broadcast from 540 to 1600 kc and FM from 88 (scale shows 87) to 108 mc. Ratio detector is the 6AL5. The model uses 70 watts to produce a maximum of 5 watts output or 2 watts undistorted output. Two record changers are built in, a RP168 for 45 RPM 7" in the upper compartment and a RP178 for 78 RPM in the lower compartment. The four knobs are Power/Volume, Tone (treble, normal, bass), tuning and selector (FM, AM, PH, XPH). By the way: It was in the early 1960s when RCA Victor called a budget label of records "Victrola" like its first console phonographs.
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 21, Copyright 1950

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The model 9W78 is part of the collections of the following members.

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