• Year
  • 1949 ?
  • Category
  • Television Receiver (TV) or Monitor
  • Radiomuseum.org ID
  • 253888
    • Brand: Airline or Air-Line

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

 Technical Specifications

  • Number of Tubes
  • 25
  • Main principle
  • Superhet with RF-stage; 2 AF stage(s)
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • Other, details in remarks or not known.
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • from Radiomuseum.org
  • Model: Airline 94BR3004 - Montgomery Ward & Co. Wards,
  • Notes
  • The Airline 94BR-3004 is a b/w TV with US FCC standard VHF tuner channels 2 thru 13.

    Model Airline 94BR-3004C:
    Receivers incorporating the following changes have been marked "C" on the rear of the chassis. Components affected in Stages HOR. M.V. (Tubes 11A and 12A) and HORZ. AMP. (Tube 12A) are:

    - L41, oscillator coil added
    - R59 from 180 ohms to 330 ohms
    - R60 from 33000 ohms to 1800 on
    - R64 from 120000ohms to 330000 ohms
    - R67 from 33000 ohms to 220000 on
    - C86 (3300 mmf) added
    - C92 from 82 mmf to 47 mmf
    - C106 (150 mmf) added

    - Resistor R95 was changed from 100000 ohms to 39000 ohms to prevent the occurrence of a vertical white streak in the picture if a high-gain 12AU/ (tub1 11) should be used.

    On some earlier sets, cores with green painted ends (instead of red) were used in coils L7 and L9. The part number of these cores is A-51A-15714, and for the coils in which they are used, A-201-15675. These coils and cores should be used as a combination.

    Switching arrangements for on-off switch:
    - switch on volume control
    - mercury switch
    - or both in series
    Plug-in sub-assembly for A-C operation
    Plug-in sub-assembly for D-C operation (optional)

  • Author
  • Model page created by Geert Schulte. See "Data change" for further contributors.

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