# PMP450 3ghz Sectors Dropping all SMs **URL:** \ **Category:** PMP\ **Created:** [July 30, 2025, 9:25am UTC](https://community.cambiumnetworks.com/t/pmp450-3ghz-sectors-dropping-all-sms/106459 "2025-07-30T09:25:16Z")\ **Posts on this page:** 1\ **Showing post:** 11
**Author:** ![Eric\_Ozrelic](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/eric_ozrelic/32/16188_2.png) [@Eric\_Ozrelic](https://community.cambiumnetworks.com/u/Eric_Ozrelic)\ **Post date:** [July 31, 2025, 9:48pm UTC](https://community.cambiumnetworks.com/t/pmp450-3ghz-sectors-dropping-all-sms/106459/11 "2025-07-31T21:48:28Z")
I have a pretty detailed write up on how to use these settings. You can check it out here: > [@Successfully using PMP450 3GHz/CBRS LTE collocation tools](https://community.cambiumnetworks.com/t/successfully-using-pmp450-3ghz-cbrs-lte-collocation-tools/96116): > > Recently a PMP450m 3GHz/CBRS AP started experiencing interference and despite quite a bit of troubleshooting, including swapping out the AP, I was unable to resolve it. As a last ditch effort, I decided to try Cambium’s LTE collocation tools. Symptoms were: Poor uplink modulation to a high number of SM’s, especially during peak hours Downlink modulation was actually pretty good for most SM’s Here’s what it looks like when a PMP450m 3GHz AP can experience from a nearby LTE eNb. AP-\> Tools → L… --- _[View the full topic](https://community.cambiumnetworks.com/t/pmp450-3ghz-sectors-dropping-all-sms/106459)._