nRF24L01 PCB Antenna pattern

Hello there, this is my very first post here.

I have a pair of nRF24L01 modules with built-in PCB antenna, I would to know if is possible to obtain the approximated antenna gain and antenna patterns for this units, I'm aware the radiation patterns can be unique for each PCB design.

We need the pattern data to predict the link behavior using the popular RF software Radio Mobile, and have real expectations about the module, more than "xx meters in indoors space"..

Thanks you in advance.

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