canopy 900 MHz

Am using motorola canopy 900MHz. lately, I have been observing that almost half of the SMs on it goes off,when you enter the SM you would see registering syncing and scanning but it will not will do that for about 1 hour before it will register.
Any help?

Have you run a spectrum analysis at the SM and the AP?

definetly going to need more info spec test is a good start. when it does register what are the power levels on both sides? what kind of of antenna’s are you using?

sounds like noise of this comes and goes… when it happens use your spec analizer and see how you need to rotate your channels… also if your on an onmi going to panels can help reduce noise issues