What are the ways to reduce noise?

I have Yagi antennas at both my AP and AP client on a point-to-point connection over 2km. The noise level at my cliend end is around -92 to -96. What are the ways I could reduce the noise further?

 

The way of reducing noise.

Choose a smart polarization for your wireless connection, this gives less noise

You bought two Yagi's, changing to horizontal polarization can help if the 'noise' is generated by a transmitter with vertical pol.

A page with some info: https://ewhdbks.mugu.navy.mil/POLARIZA.HTM

Greetings,
jchuit
http://members.chello.nl/j.huitema2/WRT54G/