This product comes from Alaris Antennas catalogues

High-Speed DF Antenna Band Switch


The DF-A0137 is a high-speed, 4-band switch intended for direction finding applications. It accepts four frequency bands, each with five antenna elements, and outputs the elements of any one band to the corresponding five RF outputs. The switch is controlled via an EIA-485 (RS-485) serial interface to allow remote control over a distance of up to 500 m. All switching is solid state for rapid and unlimited switching cycles.

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Frequency range 20 - 8000 MHz
Channels per band 5
Input VSWR < 3:1
Gain 100 MHz
Gain 3 GHz
Gain 6 GHz
Noise figure < 11.5 dB
OIP3 100 MHz
OIP3 3 GHz
OIP3 6 GHz
Maximum input level 30 dBm CW

    Product Applications

    Signals Intelligence
  • Radio Direction Finding
  • C-ESM

    Design Features

  • 4-band switch External injection mode for chain calibration Internal chain calibration noise source Low noise amplifier on each channel High-speed solid state switching