The results are according to the figure 3. While RF
frequency varies from 800MHz to 1GHz, in symmetrical field
of 60V/m, the average output of MAX4232 is -66dBV. By
contrast, the average output of X is -18dBV, and output is -
86dBV when there is no RF signal.
So the change of MAX4232 is only -20dBV, meaning that
RF noises make the output of MAX4232 vary from -86dBV to
-66dBV, while the change of X is -18dBV. In a word,
MAX4232 is much better than X in restraining RF noises.