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Blonder-Tongue FRDA-S4A-860-FA
Fiber Optic Receiver/ RF Distibution Amplifier


The FRDA is a fiber optic receiver module integrated with a broadband distribution amplifier (BIDA).
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Blonder-Tongue FRDA-S4A-860-FA
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The FRDA is a fiber optic receiver module integrated with a broadband distribution amplifier (BIDA). The FRDA is used as a launch amplifier in a coaxial distribution sub-system fed from a single mode broadband fiber network. The FRDA's optical receiver section provides exceptional CNR performance at low optical input levels. This feature is also a cost saving one, since it permits the use of lower power optical transmitters. The FRDA has an 860 MHz RF bandwidth and power doubling hybrid amplifier technology to provide high RF output levels with low distortion. The FRDA operates with the FIBT Series of transmitters as well as those from other leading manufacturers.


  • LED For Optical Input Status
  • Gain and Slope Controls
  • Exceptional CNR Performance At Low Optical Input Levels
  • 860 MHz Power Doubling Hybrid
  • Optical Input Jack Scaled 1V/mW Provides Precise Measurement Capability Using DC Voltmeter


  • Optical Receiver:
      -  Bandwidth: 47 to 860 MHz
      -  Bandpass Flatness: 1.0 dB P-V
      -  Operating Wavelength: 1310/1550 nm
      -  Optical Input Range: -6.0 to +3.0 dBm
      -  CNR (-1 dBm Input, 40 Ch. Load): 56 dB
      -  CNR (-1 dBm Input, 79 Ch.+ Data): 55 dB
      -  CNR (-1 dBm Input, 110 Ch. Load): 54 dB
      -  Input Connector: FC/APC
  • Distribution Amplifier:
      -  Impedance - All Ports: 75 O
      -  Return Loss Output: 16 dB
      -  RF Gain: 43 dB
      -  Test Port: -30, ±2 dB
      -  Gain Control Range: 10 dB
      -  Slope Control Range: 8 dB
      -  Channel Loading: 110
      -  Flatness: ± 0.75 dB
      -  Output Level (Low/High): 34/42 dBmV
      -  Composite Triple Beat (CTB): -60 dB
      -  Composite Second Order (CSO): -58 dB
      -  Hum Modulation: -70
  • Power
      -  Power Supply Requirements: 117 VAC, 60 Hz, 28 W
  • Mechanical:
      -  Size (W x H x D): 7.25 x 3.25 x 10.25 in., 18.42 x 8.26 x 26.04 cm
      -  Weight: 5.75 lbs., 2.61 kg
      -  Number Of Hybrids: 2
      -  Hybrid Technology: Power Doubling
      -  Operating Temperature: -20 to +45°C
  • Indicators:
      -  Optical Input Alarm: LED, Tri-colored
      -  Power: LED, Green

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