What is Signal Isolation?
In simple terms, it is the separation that is needed between the donor (outdoor) antenna and the indoor service antenna. The donor antenna takes the signal feed from the cell tower, sends it through a length of coax to a base repeater unit, and then out to the indoor service antenna. This process is constantly monitored by the base repeater unit. If you happen to place the indoor service antenna too close to the outdoor donor antenna, the amplified signal that is broadcasting from the indoor service antenna will feed back into the donor antenna and will cause what is called signal oscillation. This can be avoided by creating sufficient distance between the indoor and outdoor antennas. This does not always relate to a specific distance as this isolation is measured in Decibels. Typically, 70dB isolation is needed for wireless repeaters to function properly. Different materials (roof, walls, sheetrock, aluminum) all have different levels of attenuation or signal reduction. Therefore, thi
