Transmitter 30FXB

Collins Radio Company; Cedar Rapids (IA)

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  • Year
  • 1934–1936
  • Category
  • Amateur Transmitter (only)
  • Radiomuseum.org ID
  • 174026

 Technical Specifications

  • Number of Tubes
  • 10
  • Main principle
  • Transmitter
  • Wave bands
  • Short Wave (SW only)
  • Power type and voltage
  • Alternating Current supply (AC) / 110 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Transmitter 30FXB - Collins Radio Company; Cedar
  • Shape
  • Rack
  • Dimensions (WHD)
  • 20.5 x 60 x 20 inch / 521 x 1524 x 508 mm
  • Notes
  • Collins 30FXB Transmitter: can be tuned in the range of 1,5 - 15 MHz included 160 - 20 m ham bands, CW (A1), AM (A3) 100 W.
    Tubes used are 47 as oscillator tube, two 46 buffer (can be switched as doubler operation), a 203A or 211 as R-F power amplifier;
    in the 7B speech amplifier, two 830B (alternatively 800 or 830) act as class B modulators;
    in the integrated power supply 405C, a 5Z3 is used as low voltage recifier (400V B+), two 866 mercury rectifiers as high voltage rectifiers for B+ of 1000V (telephony) or 1250V (CW) operation, and a 45 as diode acting as keying rectifier.
    The 30FXB replaced the 150 series transmitters and has been replaced by the 30FXC in 1936.
  • Source of data
  • -- Original-techn. papers.
  • Author
  • Model page created by Martin Bösch. See "Data change" for further contributors.

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