The “Big Wheel” is a horizontal
polarized omni directional antenna. Usually highly directional antennas
are used on VHF and UHF, which have the capability to bundle the
radiated energy in one direction and eliminate interferences from
unwanted directions. But these effects are not always welcome. With
directional antennas it is nearly impossible to monitor a frequency for
signals from any direction. Usually the directional antenna stays in the
direction where the most signals are expected from and some rare
contact in an other direction is lost. In such cases the Big Wheel is an
ideal antenna which should be used together with a directional antenna.
Big Wheel antennas by WiMo are made of
stainless aluminum, all other hardware is made of stainless steel. The
antenna gain is approx. 3dBD, each Big Wheel has a N-jack (female). By
vertical stacking of two Big Wheels you get a gain of approx. 5dBD. To
connect two antennas to one coax feed a usual phasing harness can be
used.
More Info: http://www.wimo.de/big-wheel-antennas_e.html
