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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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 |