This product comes from Alaris Antennas catalogues

Wideband HP Active Monitoring Antenna


This is an extremely wideband, compact, active horizontally polarised receiving antenna for omnidirectional monitoring. It is designed for either static use on shelters or can be installed on vehiclesbrMounting is via the provided standard NATO and US 4/6 hole mounting flange, making it compatible with a variety of standard mounting arrangements.brThe OMNI-A0156 and OMNI-A0156-02 variants of the antenna provide 2 output ports which exit the antenna under the mounting flange for watertight and convenient vehicular installation. One output port covers the band from 20 to 1000 MHz and the second from 1000 to 3000 MHz. The OMNI-A0156-01 combines the two bands internally and provides a single output connector.brThe OMNI-A0156 and OMNI-A0156-01 versions are equipped with active matching and amplification, which provides excellent performance at very low frequencies. The OMNI-A0156-01 provides a passive bypass feature to allow the antenna to be used in passive mode in high field strength environments by removing power to the antenna.brThe active versions of the antenna can be powered using a product such as the MISC-A0022.brThe antenna is excellently twinned with the OMNIA0098 active VP monitoring antenna to provide full spectrum coverage of both VP and HP signals.

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Frequency range Band A: 20 - 1000 MHz; Band B: 1000 - 3000 MHz
Gain 20
VSWR < 2.5:1
Nominal impedance 50 O
Azimuth pattern Omni-directional
Azimuth ripple < 6 dB
RF power handling Active
Polarisation Linear
Connector Band A: N-type female; Band B: N-type female; 1 x N-type female
Power supply (active antenna) 15 V DC injected onto band A connector (see also MISC-A0022 supply); 10 - 15 V DC injected into RF connector
Total length < 400 mm
Total diameter < 360 mm
Total mass 3 kg
Mounting Colour
Per reque Temperature range

    Product Applications

    Spectrum Management
  • Spectrum Monitoring
  • Radio Direction Finding
  • Signals Intelligence

    Design Features

  • Compact HP monitoringbrActive matching and amplificationbrStandard mounting interfacebrVehicular and shelter-mountable