# Minimum RSSI to deliver service

**URL:** https://community.cambiumnetworks.com/t/minimum-rssi-to-deliver-service/94205
**Category:** CBRS
**Created:** [July 24, 2023, 1:01pm UTC](https://community.cambiumnetworks.com/t/minimum-rssi-to-deliver-service/94205 "2023-07-24T13:01:32Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![Raymond\_Clark](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/r/8dc957/32.png) [@Raymond\_Clark](https://community.cambiumnetworks.com/u/Raymond_Clark)
#### Post date: [July 24, 2023, 1:01pm UTC](https://community.cambiumnetworks.com/t/minimum-rssi-to-deliver-service/94205/1 "2023-07-24T13:01:33Z")

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Does anyone know what the minimum RSSI for the 450b is to deliver reliable CBRS based service?

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### Author: ![Jacob\_Turner](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/j/f14d63/32.png) [@Jacob\_Turner](https://community.cambiumnetworks.com/u/Jacob_Turner)
#### Post date: [July 24, 2023, 2:33pm UTC](https://community.cambiumnetworks.com/t/minimum-rssi-to-deliver-service/94205/2 "2023-07-24T14:33:43Z")

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It would depend on what constitutes reliable in your environment. The 450 gear works quite reliably at a low RSSI as long as your noise floor is low.

For us, -65 is about the lowest we’ll go in our environment. Much lower than that and customers often see session drops, sometimes lasting for long periods of time. There are a few other operators using CBRS in the area and the noise floor is quite high, generally.

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### Author: ![Raymond\_Clark](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/r/8dc957/32.png) [@Raymond\_Clark](https://community.cambiumnetworks.com/u/Raymond_Clark)
#### Post date: [July 24, 2023, 3:25pm UTC](https://community.cambiumnetworks.com/t/minimum-rssi-to-deliver-service/94205/3 "2023-07-24T15:25:43Z")

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Thanks, our noise floor is practically non-existent.

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### 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 24, 2023, 4:40pm UTC](https://community.cambiumnetworks.com/t/minimum-rssi-to-deliver-service/94205/4 "2023-07-24T16:40:54Z")

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I think the minimum SnR for PMP450 is around 8dB… you’d never want to install it at those levels. Our minimum RSSI is around -75, and we even try to avoid that if possible.