When I look at the config for some of my AP's they are showing under the Inventory Information AP Type Unknown. Also, when I go the radio interface for b/g and try to change the external antenna from Other to the 5959 antenna, there is no antenna's listed at all.
I looked at other AP's that are working and they show AP Type as LWAPP and have all the antenna choices listed as well.
The WLC version is 4.2.112 and the WCS version is 4.2.81.
I found this problem after changing some of the AP's to manually set the channel assignment. I then went to look at the heat map for all the AP's in one building and nothing shows up, just the AP's with no color heat map. I did reset the AP's with no change.