# Photon vs Core - RSSI Readings?

**URL:** <https://community.particle.io/t/photon-vs-core-rssi-readings/17403>\
**Category:** Troubleshooting\
**Created:** [November 13, 2015, 2:40am UTC](https://community.particle.io/t/photon-vs-core-rssi-readings/17403 "2015-11-13T02:40:59Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![bko](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/bko/32/20704_2.png) [@bko](https://community.particle.io/u/bko)\
**Post date:** [November 13, 2015, 3:00am UTC](https://community.particle.io/t/photon-vs-core-rssi-readings/17403/2 "2015-11-13T03:00:34Z")

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I don't know for sure on Photon but for the Core, positive values indicate an error and +11 would mean that the WiFi chip driver got confused.

I searched a bit for the RSSI range for WICED but did not find anything very useful. There was comment in a file on github saying they fixed a bug in RSSI:

> - The wiced\_scan\_result\_t structure now includes a flag to indicate reception of an off-channel scan result  
> (rather than returning the RSSI of the result as +200dBm)

I don't think that +11 dB would be a meaningful RSSI for normal access points and phones but it could be a relative measurement with a funny 0 dB value. I think the reported readings can only really be interpreted on a relative scale, comparing one reading against the next--they are not calibrated in any way that I know of.

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_[View the full topic](https://community.particle.io/t/photon-vs-core-rssi-readings/17403)._