Free Space Loss
Loss of power over distance (assuming no fresnel effect and nothing in the way). This a very idealised calculation and in practice everything interferes with the signal but it will give you a reasonable approximation of the actual loss over distance. enter the system frequency in mhz and the distance in either kilometers (km) or miles below and then click the 'Calculate' button. 1 ghz = 1000 mhz e.g. 2400 = 2.4 ghz.
frequency  mhz
results  db

Wireless Connections provides these calculations as a courtesy. We believe in their accuracy, but results are provided as is with no warranty or guarantee.