14
Pin = 21.5 – 108.0 + 16 – 4.5
Pin = -75.0 dBm
This signal is a calculation under ideal circumstances, however, the radio path
can be disturbed by weather conditions, or antennas can suffer degradations. For
this there is a safety margin included. This margin is called the FADE margin.
Many factors can influence the fade margin; it is safer not to be optimistic about
it. A valid value is approximately 5dB.
This results in a signal level of –80 dBm. The receiver requires a minimal level of
–84.1 dBm to perform at the highest bitrate. Therefore, we can conclude that this
link will work.
