Antenna Specs & Worth upgrading to high dbi antenna?


I search like a maniac for information about the specs of the eights antennas delivered with the BPI-R3. That forum posts had some hints but they are not quite conclusive:

Does anyone know the actual specs of the antennas and possibly know if it would be worth it upgrading to a higher tier / “prosumer” antenna?

Thanks Mike

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I ordered these 8dbi/16cm antennas:

But not yet tested…

I just made a comment on another thread, link below as I am also wondering the same as op. The ones frank listed, the link isn’t working for me to look at the details of his recommendation.