TX power on EM9291

1

Hi @jyijyi ,

I am using Sierra EM9291 module and measuring the TX power using AT!GSTATUS?

The power keeps fluctuating from 3 to 21.5
tx-power-em9291.txt (28.8 KB)

Can we fix the TX power to maximum(23)?
Why it is fluctating this much?

Thanks,
Arti

2

this is real environment
I can also see your RX is fluctuating…

3

Can we fix the TX power to maximum(23)?

4

probably you need to use some test equipment like CMW500

5

Hi @jyijyi ,

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Is Antenna order important?
Do we need to place Antenna0 to Antenna3 like these or we can put in any order for better range and power?

Thanks,
Arti

6

is there improvement if we change other antena direction?

I remember for EM919x, we would suggest the positioning of the MAIN and DIVERSITY antenna MUST be near 90 degrees in the same horizontal plane to get better polarization performance

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