I thought you said you wanted to know what the classname of the antenna used in the pungi stake trap was? I'm telling you that it isn't just an antenna, its the radio, only placed below ground so you only see the antenna. Just plop down a radio, save the mission, open up the mission.sqm file and look for the "vehicle==XXX" line. Walla, you have your classname.
As far as tank tracks, turrets, etc: I've never seen any such object. I know there isn't anything like that by default. Maybe you could find something like that in the editor upgrade, but I really doubt it.