Ron,
Here is how it works currently...
External antenna parameters are considered as static ap properties similar to static ip address and it gets reported back to a controller during discovery.
Cset factory removes the ap’s running configuration and the ap goes into discovery looking for a controller. The default external antenna setting is
"no antenna" so this gets reported back to the controller accepting this ap.
The controller will have to reconfigure the external antenna settings again.
Doug Hyde
Director, Technical Support / Extreme Networks