PIM blankets are temporary RF barriers that can be deployed on rooftops, both in front of as well as behind base station antennas to help isolate sources of Passive intermodulation (PIM).
When a PIM blanket is placed over an external PIM source, PIM from that source typically reduces by >30dB. PIM blankets not only help validate the exact location of external PIM but also show the level of improvement that could be achieved with a permanent repair.