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Major advances in technology have put the use of unmanned aerial vehicles (UAVs) at the forefront in commercial and military applications. Such UAVs are being used for weather, reconnaissance, aerial mappings, and military operations. UAVs come in different sizes, shapes, and forms. The two most common types of UAVs are fixed wing and rotary. In this effort, the latter is referred to as a UAV helicopter (UAVH). At the heart of a UAV mission’s success are the antennas onboard. These antennas are used to perform many tasks such as: Manual takeoff, flight, or landing a UAV; relay of messages or data; and other mission specific tasks. This effort concentrates on the modeling and analysis of three VHF/UHF antennas and two GPS antennas onboard a UAVH. Two of the three VHF/UHF antennas are 14-inch blades, and the third is a 9-inch blade, each operating in the 30-400 MHz frequency range. The GPS antennas are dual-stacked circular patches, operating at 1575.42 MHz (L1) and 1227.6 MHz (L2) frequencies. However, only the analysis at L1 is provided in this effort. The majority of the UAVH model preparation is performed in GiD, a commercial CAD and meshing software. The computational electromagnetics (CEM) modeling and analysis effort is carried out using WIPL-D, a Method of Moments (MoM) software.