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HomepageCommunications & IFBWired Intercom › Clear-Com HB-704
Clear-Com HB-704

The Clear-Com HB-704 is a 4-Channel Select Flush-Mount Headset Station (4.5" X 4.5") which Mounts in Console or Standard 2-Gang Electrical Box.

HB-704 is a selectable four intercom channel wall or console-mounted headset station. Microprocessor-controlled logic and switching, with momentary/latching talk button. Visual call signaling.

Optional 4-wire and TW daughter boards.
Specifications
Headset Microphone Input
  • Input Type : Dynamic
  • Input Impedance: >= 1K
  • Mic Limiter Threshold: -2dBu ± 3dB
  • Mic Limiter Range: >= 15dB

  • Program Line Input
  • Input Impedance: >= 5K

  • Headset Output
  • Load Impedance: >= 8
  • Output Impedance: <= 25
  • Output Limiter Threshold: +5dBu ± 3dB
  • Maximum Output Level before Distortion: >= 17dBu

  • Party-line Output
  • Off Noise: < -74dBu
  • Output Impedance: >10K

  • Party-line Input
  • Crosstalk: < -60dB
  • Max level before Clipping: >= 12dBu

  • Frequency Response
  • Headset Mic - Party-line: 300 - 15KHz ± 3dB
  • Party-line - Headset Out: 300 - 15KHz ± 3dB

  • Max Distortion
  • Headset Mic - Party-line: <= 0.5%
  • Party-line - Headset Out: <= 0.2%

  • Noise
  • Headset Mic - Party-line: < -70dBu

  • Max Gain
  • Headset Mic - Party-line: 41dB ± 2dB
  • Party-line - Headset Out: >= 34dB

  • Power
  • Input Voltage Range: 20-30 VDC
  • Input Current (Idle): <= 50mA
  • Input Current (Max): <=100mA

  • Internal Adjustments and Connections
  • Intercom Line: Seven terminal connector
  • Option Switches: Two DIP switches
  • Option Board Jumper: Two sets of options jumpers

  • Front Panel Connectors
  • Headset: (1) XLR-4M

  • Front Panel Controls & Indicators
  • (1) Sidetone control
  • (1) Talk button
  • (1) Call button
  • (1) Channel select switch
  • (1) Volume control

  • Environmental
  • 32 - 122F (0 - 50C)

  • Dimensions
  • 4.625 in. W x 4.5 in. H x 1.75 in. D
  • (117 mm x 114 mm x 44 mm)

  • Weight
  • 0.46 lbs. (0.21 Kg)
  • Reviews
    Price
     
    $653.00
    Free shipping in Canada. Conditions
    Additional information
    For more information about the HB-704, please visit the website of Clear-Com
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