It is theoretically impossible to add an external antenna to a AE station in order to increase the range of your wireless network.
However, it is possible if you drill a hole through the case at the right position.
If you fill comfortable with this mod and want to try it, then all required information can be found here:
http://bounav.free.fr/mods/ae_external_antenna/
PS: do not forget to send us your report about "short-life" APX stations (as indicated in our previous news:
how to submit and
the original news)