Transmitter 30J

Collins Radio Company; Cedar Rapids (IA)

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  • Year
  • 1937
  • Category
  • Amateur Transmitter (only)
  • Radiomuseum.org ID
  • 174092

 Technical Specifications

  • Number of Tubes
  • 0
  • 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 30J - Collins Radio Company; Cedar
  • Shape
  • Boatanchor (heavy military or commercial set >20 kg).
  • Dimensions (WHD)
  • 20 x 60 x 13 inch / 508 x 1524 x 330 mm
  • Notes
  • Collins 30J Transmitter: can be tuned in the shortwave range included 160 - 20 m ham bands using coil assemblies, CW (A1), AM (A3) 250 W.
    In early variants, a Collins C-100A has been in use as oscillator and Collins C-101 as R-F output tubes;
    In the later Variant Collins 30J-18 introduced in 1938 used a 802 in the crystal oscillator, one or two 807 as frequency multiplier and buffer and push-pull 813 as output tubes. In the modulator, two ZB120 (smilar to 838) have been in use.
    The 30J has been the last Collins pre-war transmitter in art deco design before Collins switched to war production.
  • Net weight (2.2 lb = 1 kg)
  • 386 lb (386 lb 0 oz) / 175.244 kg
  • Author
  • Model page created by Martin Bösch. See "Data change" for further contributors.

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