in a site mw was of 15 ghz
power 6 dbm
we required rx level 39 dbm
we did alignment but we were not getting the rx level below 42 dbm
we changed the radio of one site suddenly we receivd 39 dbm but within 3-4 hrs level again went to 42 dbm n didnt came dwn. we didnt changed the far ends radio.as we were getting the rx level at that site.
there was another mw of 1.2 dia n 15 ghz at vert pol just above 2 feet.at 20-30 deg angle diffrce.
what might be the prob.?