The EMCO model 3161-02 is the second of a set of three horn antennas designed for use in Immunity testing within the frequency range of 2-4GHz. Linearly polarised with medium gain half power beamwidth (equal in both horizontal and vertical planes) and a nominal VSWR over the recommended operating frequency range. They can be used easily with a fixed antenna factor over the range. A nominal AF is 22.3dBs. with a gain of 17.5dBi. The 22 degree beamwidth in both polarisation planes is ideally suited to illuminate larger EUTs. These antennae have a detachable coax-to-waveguide feed, but come fitted ready to use with precision “N”. Mounting is with ¼ UNC receptacle on two brackets at 90 degrees.