those aren't antennas. its a safety feature so they can tell how close they are to another vehicle. also on the top are also VHF, they have access to a system called HEAR. HEAR operates on 155.340 and also155280 I believe. BTW I am talking about those bright orange sticks that are the safety features.
Last edited by KB1UAM; 09-23-2012 at 5:04 PM..