Internet Investing Internet Technology Internet Lists Windows Internet Tech. Since radio waves are millimeters in size, rain, which is also that size, interferes with the RF Internet. Laser light is microns in size, and fog droplets, which are also microns in size, interfere with laser light. The highest risk of fog is around 8 AM on any day.
Laser can penetrate fog to twice the distance the human eye can see.
Modern lasers should last about six years before needing to be replaced. The real cost of a laser link is the recurring costs of rooftop rights and the one-time cost of installation. Lasers can also be installed in offices, pointing out a window, in which case the recurring cost is the price of the office space. Ethernet, claimed Lockie, has been successful because of its price. While ATM systems require interface cards, most computers come with Ethernet cards already installed.