Nokia RoofTop™ Wireless Router Installation Guide 19CHAPTER 3 Site survey3.1 Site survey stepsNOTE: The Site Survey information is provided for use by the InternetService Provider and is carried out by the ISP prior to installation. It is notnecessary for the purposes of the actual hardware installation.The goals of a site survey are to determine the feasibility of RF links ateach site and to determine the antenna and cable requirements.1. Determine the feasibility of RF links to other sites.If the site has good links to other sites, it can be used as a forwardingsystem for other wireless routers in the network. If the router can link toone other router, it will be able to access the internet, but it will be unableto forward signals to other wireless routers.Determine the RF path between the antenna at the site and the antennas atother, adjacent sites. For a directional link with a single antenna, there isonly one RF path. For an omnidirectional antenna, determine all RFpaths. The RF path can be determined by knowing the relative bearingfrom the current site to adjacent sites.