SG-8

Columbia Radio Co.; Youngstown Ohio

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  • Year
  • 1930
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 35694
    • Brand: Sentinel

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

 Technical Specifications

  • Number of Tubes
  • 8
  • Main principle
  • TRF without regeneration; Screengrid 1926-1935
  • Tuned circuits
  • 3 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Alternating Current supply (AC) / 110 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • from Radiomuseum.org
  • Model: SG-8 - Columbia Radio Co.; Youngstown
  • Notes
  • Push-pull af output stage
    There are several versions found in the literature:
    1) Manuf.: Allied ; Model Name: Knight SG-8 (1930) ; Reference: Rider's 3-4 & Radio Set Socket Layout Guide RCA, p.86
    2) Manuf.: Allied ; Model Name: Columbia SG-8 ; Reference: Beitman 1-6 (schematic)
    3) Manuf.: Allied ; Model Name: SG-8 ; Reference: Beitman 1-6 (complete index) & Rider's index
    4) Manuf.: Allied ; Model Name: Knight 8 ; Reference: Grinder, Collectors Guide
    5) Manuf.: Columbia Radio ; Model Name: Columbia SG-8 ; Reference: Beitman 1-6 (index)
    6) Manuf.: Columbia Radio ; Model Name: SG-8 (1930) ; Reference: Rider's 1-2
    7) Manuf.: Columbia Radio Corp. ; Model Name: AC-8-29 SG ; Reference: Radio Set Socket Layout Guide RCA, p.20
    As far as present all models have the same schematic and tube complement
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
  • Literature/Schematics (2)
  • -- Schematic (La Riparazione degli Apparecchi Radio, Delforno - Colciago, Italy 1941)

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