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SP1ML module very low RSSI

Question asked by percic.tomaz on Jul 4, 2017

Hello!

 

For a project at work we're using SP1ML-915 modules. For testing I have one dongle made by ST and one PCB made in house with SP1ML module mounted and connected to USB.

 

After sending random strings between the two, I go into command mode and check RSSI (ATI1\r command). Usual values there are between -115 and -105 dBm. The value doesn't really change when I move the transmitter around or when I change the transmitting power.

 

I'm getting about 10 meters of indoor range (walls and metal between the transmitter and receiver).

 

What am I doing wrong?

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