Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
FM radio can go trugh an wall and light cant.So radio is not line of sight
Someone Electro said:Radio cannot go through hills and water.
heathtech said:This is all true, but, I just wanted to dispell any confusion as to what line of sight really means. A LOS transmission can be radio, laser, IR, visible light, etc. Radio CAN be used for LOS communication too, all that is required is 2 DIRECTIONAL antenna (dish style) with 2-way radios, antennae pointed directly at each other, seperated by no more distance than the strength of the radio amplifer and curvature of the earth limit.
LOS doesn't have to be directional, two VHF (or higher) radio transceivers using quarterwave whips (which are omnidirectional) are 'line of sight' - there's no need for directional aerials.
Again, I refer to the reasons above that there are practical advantages to LOS, just not , as you say, for moving recievers.For most practical purposes LOS transmission just doesn't work
Again, I refer to the reasons above that there are practical advantages to LOS, just not , as you say, for moving recievers.[/quote]For most practical purposes LOS transmission just doesn't work