SYST-A0004
DF and Monitoring Stack
The SYST-A0004 is an antenna stack comprising DF-A0038 vertical polarisation DF and Omni, and OMNI-A0099 and OMNI-A0100 horizontal omni antennas. At the base it is supported by the MISC-A0047 support cage. All RF and control signals pass through the MISC-A0045 amplifier block which compensates for cable losses. Mounted on a mast, with vertical and horizontal polarisation monitoring, and interferometric direction finding, it provides a complete spectrum monitoring and DF solution. A DF switch can be mounted at the base of the DF array. Its cables can be fed back into the mast and routed through the omnis. The horizontal-polarisation omni antennas feature a cable duct for connection of antennas above, without distortion of their patterns. All monitoring antennas share a common axis, giving excellent radiation patterns.
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Specifications & Resources for SYST-A0004
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Ideal applications
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- Electronic Surveillance
- Design Features
- Three-band direction finding array optimised for two-channel receivers. Hinge mounting flange for DF switch, with cable re-entry port. Vertical and horizontal monitoring. Concentric design eliminates shadowing.
- Frequency range
- 20 - 3000 MHz
- Polarisation
- Vertical
- Nominal input impedance
- 50 Ω
- Connectors
- 15 x TNC-M on cables
- Cable exit
- Standard flange for switch mounting
- Power supply requirements
- DC 15±1 V, 300 mA on coax
- Dimensions
- Ø2.6 m x 5.5 m
- Total mass
- 125 kg
- Internal joining
- Bolted flanges
- Mounting method
- Flange mounted 8 off 12 mm holes on 280 mm PCD
- Wind survival
- 160 km/h (without ice)
- Temperature (operational)
- -30 °C to +70 °C
- Temperature (storage)
- -40 °C to +71 °C
