The Sail Internet network has two types of communications links:
- Fiber links used mainly in the core and distribution networks, and which are unaffected by weather.
- Wireless links used primarily in the access network.
Wireless links of Sail Internet operate in microwave and millimeter-wave bands. Wireless signals in those bands may be attenuated by rain, but the design rules followed by Sail make it practically impossible for a customer to experience any impact.
For designing wireless links, Sail uses internationally-accepted rain attenuation models fitted to the statistics of the geography of the link. The design goal is a minimum of 99.995% of full-rate availability. This means that, in a typical year, the link is expected to operate at full rate for all but 26 minutes. During those extra-ordinarily intense rain events (corresponding on average to 26 minutes in a year), the link does not drop entirely but operates at a reduced rate.
Wind has no effect on the propagation of wireless signals.