'Custom tuned' collinear antennas all exhibit very similar radiation patterns. The antennas are suitable for single frequency or duplex applications and vary only in their construction.
The COL18 is a ruggedised base antenna, designed for use in even the most extreme climatic conditions. The radome which houses the active elements of the COL18 was originally designed to serve as the mast of recreational sail boards and is immensely strong. The radome is coloured black to maximise solar heat retention and this has been shown to aid significantly in ice shedding. A substantial alodine aluminium mounting tube supports the radome.
