One thing to keep in mind is that the RSSI is only an indication of the
RF energy detected at the antenna port. The power level reported could
be artificially high because it may include energy from background noise
and interference as well as the energy from the desired signal. This
situation is worst in an interference prone environment where it is
possible to get consistently high RSSI readings yet still have
If the application is actually attempting to measure "link reliability"
and not just "signal strength" it may be helpful to factor in "% packets
received" or similar data.
Digi always recommends performing a loopback test and actually measure
link performance in terms of signal strength and packet success rate to
determine the reliability of an RF system.
Contact Digi support for additional information on this subject.