Antennas in a transmission path should ideally have similar polarization. Exception: For specific applications it can make sense to combine an antenna with a clockwise polarization – as a fixed station antenna – with a vertical polarizing antenna mounted on a mobile turning object.
Polarization indicates the directions of vibrations created by the electric field. It’s distinguished between horizontal and vertical linear polarization (VP), and right hand circular polarization (RHCP). The transmitting and the receiving antenna should have identical polarization. In case of unequally polarized antennas you can experience loss or no radio connection at all. We use antennas with vertical linear polarization (VP) or right hand circular polarization (RHCP). An RHCP antenna is suitable for directional radio communication with sight connection. For all other applications we recommend VP antennas.