Anechoic Chamber Problem

Hi, everyone, I have a question about the EM anechoic chamber dimension and test frequency.

There is one chamber in my school with about 7 mx5 mx2.5 m, two dimension.

so what's the frequency range for far field test in this chamber? or is it possible to test far field?

The other question is that if the result is near field, is it possible to transform the Near field result to Far field just having 2D standard cut data???

Any comment will be appreciated.

in my opinion, the room seems not very big. therefore, the chamber room may good for measuring far field at microwave frequency (~ above to 1GHz).