Linear Amplifier 4K-ULTRA

Henry Radio, Inc.; Los Angeles, CA

  • Year
  • 1971–1982
  • Category
  • RF (Radio Frequency-) Amplifier
  • Radiomuseum.org ID
  • 343886

 Technical Specifications

  • Number of Tubes
  • 1
  • Valves / Tubes
  • 8877
  • Main principle
  • Radio Frequency Amplification only
  • Wave bands
  • Short Wave (SW only)
  • Power type and voltage
  • Alternating Current supply (AC) / 208; 230 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Linear Amplifier 4K-ULTRA - Henry Radio, Inc.; Los Angeles
  • Shape
  • Boatanchor (heavy military or commercial set >20 kg).
  • Dimensions (WHD)
  • 16 x 37 x 21 inch / 406 x 940 x 533 mm
  • Notes
  • The Henry 4K-ULTRA RF Linear Power Applifier has the following features (from Manual):

    • Input power: 4000 W PEP for SSB; 4000 W for CW; 3200 W for RTTY and FM; 2000 W for AM.
    • Output power: 2500 PEP nominal for SSB and CW; 2000 W nominal for RTTY and FM; 650 W nominal for AM.
    • Emmision: SSB, CW, RTTY, AM and FM.
    • Bands (amateur): 80, 40, 20, 15, 10 meters.
    • Frequency range: 3 to 30 MHz.
    • Input and output impedance: 52 ohms nominal.
    • All aluminum cabinet to eliminate magnetic resonance.
  • Net weight (2.2 lb = 1 kg)
  • 225 lb (225 lb 0 oz) / 102.150 kg
  • Mentioned in
  • -- Original prospect or advert (“Radio Rivista” official organ of "ARI Amat. Radio Assoc." of Italy, number 2, February 1979.)
  • Literature/Schematics (1)
  • 4K ULTRA Linear Amplifier Operating and Maintenance Manual, Henry Radio.
  • Literature/Schematics (2)
  • Summary History and Specifications of Henry Tube Amplifiers, Henry Radio, Inc.
  • Author
  • Model page created by Pier Antonio Aluffi. See "Data change" for further contributors.

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