This product comes from Alaris Antennas catalogues

High-Speed DF Antenna Commutating Switch

DF-A0239
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The DF-A0239 is a high-speed 6- to 3-channel commutating switch intended for switched elements direction finding applications. The switch works in combination with a band switch* and can accommodate up to 4 bands, each with 6 antenna elements, and routes any 3 elements of a selected band of 6 elements to any of the 3 outputs. The switch is designed to be mounted internally within the weatherproof cavity of the DF-A0029, DF-A0037 and DF-A0095 direction finding antennas, as well as the DF-A0057 outdoor enclosures designed for use with the DF-A0001, DF-A0007, DF-A0038, DF-A0062 and DF-A0136. The switch accepts a very wide input voltage range and is controlled via hardwired logic lines or an EIA-485 (RS-485) interface. The commutation table can be programmed via the RS-485 interface. Commutation is triggered via an external strobe line. All switching is solid state for rapid commutation and unlimited switching cycles.

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Specifications

Frequency range 1 - 6000 MHz
Input VSWR < 2.5:1
Maximum input level 30 dBm CW
Input connectors SMA female
Output connectors SMA female
Power supply 19 - 36 V DC
Control interface EIA-485 (RS-485)
Commutation time < 10 µS
Dimensions 317 mm x 170 mm x 40 mm
Total mass < 1.5 kg
External material Aluminium
Temperature range -40 °C to +70 °C
Vibration 0.02 g²/Hz
Shock 40 G for 10 ms
Thermal shock -20 °C to +70 °C

    Product Applications

    Signals Intelligence
  • Radio Direction Finding
  • C-ESM

    Design Features

  • 6- to 3-channel commutating switch. High-speed solid state switching.