Absolutely,paying attention to isolation is crucial when installing a mobile signal repeater . here is why : 

What is isolation ? 

Isolation refers to the physical separation and signal attenuation between the donor antenna(receibing the weak outdoor signal ) and the coverage antenna (broadcasting the amplified signal indoors ) 

Why is it important ? 

Without proper isolation ,the amplified signal from the coverage antenna can"leak"back to the donor antenna . this creates a feedback loop where the repeater essentially amplfies its own noise ,leading to : 

Oscillation and interference : this disrupts the network and renders the repeater ineffective . 

Reduced system lifespan :excessive feedback can damage the repeater . 

Potential interference with other radio services :this can be illegal and disrupt nearby devices . 

How much isolation is needed ? 

The nimimum isolation level depends on the gain(amplification) of your repeater .as a general rule ,the isolation value should be greater than the gain of the repeater . for example ,if your repeater has a +90db gain ,you will need at least 100db of isolation between the antennas. 

Ensuring proper isolation : 

Physical separation:ideally ,place the donor antenna as for away from the coverage antenna as possible ,preferably on opposite sides of the building . 

Directional antennas :use directional antennas to mimimize signal overlap .

Coaxial cable quality :use high-quality coaxial cables with low signal loss .

Professional installation :consider professional installation for proper antenna placement and equipment configuration . 

By prioritizing isolation during installation ,you can ensure your mobile signal repeater functions effectively ,avoids interference ,and operates safely .