Currently put our device through in country approvals in Brazil and we are failing on 3G Band 1 and Band 8 power levels.
Running the AT-pass through firmware
Any suggestions how to fix this?
Is there a specific DeviceOS version I should be building the AT-passthrough firmware against to get the correct power levels?
How do you plan on solving the SIM card issue in Brazil? Anatel does not allow permanent roaming so the Particle EtherSIM cannot be used long-term and the B524 does not have a reprogrammable eSIM to use a local operator IMSI.
Hi @GJMorrison,
The power levels shouldn’t be elevated which indicate there may be an issue with the module you’re using. Have you tested multiple modules and does the same issue occur?
I spoke to the technical team and Quectel wants to RMA the unit you’ve used for testing (they’ve been in touch with Eoghan).
We are going to build up a couple more modules for them to test. Can you confirm what version of DeviceOS I should build the AT-passthrough code against?
Should we be just connected to the main Cell uFL or have the 2nd diversity uFL connected as well for power testing?
Device OS does not affect the transmit power in any way, so the version does not matter.
Hi Gary,
Is your team using our AT Passthrough instructions, if you don’t have them, can you send me an email and I can pass the document along, erik.fasnacht@particle.io. The passthrough was tested using Device OS 2.0.0 but we don’t expect it to affect the power levels.