• Year
  • 1960 ??
  • Category
  • Commercial Receiver (may include amateur bands)
  • Radiomuseum.org ID
  • 172340

 Technical Specifications

  • Number of Tubes
  • 17
  • Main principle
  • Superhet, double/triple conversion
  • Wave bands
  • Broadcast, Long Wave and more than two Short Wave bands.
  • Power type and voltage
  • Alternating Current supply (AC) / 115 / 230 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: 51S-1B - Collins Radio Company; Cedar
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 343 x 170 x 381 mm / 13.5 x 6.7 x 15 inch
  • Notes
  • General Coverage Communications Receiver Collins 51S-1B: covering 0,2 - 30 MHz, AM / CW/SSB; double-conversion above 7 MHz, triple conv. below 7 MHz. Notch-filter, 2 mechanical IF filters.
    Variant of the 51S-1 with rear mounted junction box with military type connectors for power, IF out, audio, muting (J101) and antenna (J102); impedance of remote audio line 150 Ohms.
    In the Collins Manual is a reference found: "The junction box provides military-type connectors for power, control, audio and antenna". But since an Army / Air Force designation for this receiver was not yet found it remains unclear whether, where and when the 51S-1B has been in military use. 

    The 51S-1B came equipped with 115 VAC power cable, but could be operated from 230 VAC with special cable.

  • Net weight (2.2 lb = 1 kg)
  • 12 kg / 26 lb 6.9 oz (26.432 lb)
  • Author
  • Model page created by Martin Bösch. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model 51S-1B is part of the collections of the following members.

 Forum