Corner reflector antennas

For system path connections, many amateur ones are RF links. An RF link is a point-to-point path from a transmit signal to a (far end) receiver decoding that signal. An RF path has free-air loss. Therefore, it's prudent to install gain type antennas at each end. Polarization of these antenna is not very important as long as the same is realized at each end. Otherwise, cross polarization will attenuate the signal about 25 db (not a good thing).

For short haul links the Author uses a 3-element yagi for sufficient gain and directivity. For the long ones a corner reflector works well. This type has good resistance against the ice loading and winds at a high-up site in the winter. Cost for commercial reflectors as compared to yagis are generally the same.

Here's some examples of the reflector including one "home-brew".