THIS APPLICATION IS BEING AMENDED TO CHANGE (1) THE MAXIMUM EFECTIVE RADIATED POWER AND THE TRANSMITTER OUTPUT POWER IN SECTION III, ITEMS 9 AND 10 AND (2) THE ANTENNA SKETCH IN ATTACHMENT 11. THE ANTENNA SKETCH SHOWS THAT THE ANTENNA IS AN EXISTING STRUCTURE. SECTION 77.15 OF THE COMMISSION'S RULES PROVIDES THAT AN EXISTING STRUCTURE IS EXEMPT FROM FAA FILING REQUIREMENTS.