Low profile, concealed antennas are frequently desired for diverse applications across many military and commercial vehicle platforms. A vehicle underside can be considered a viable alternative place for concealment as it provides enough space to avoid extreme antenna miniaturization. A study conducted at the Antenna Research Group (ARG) at the University of Colorado evaluated the bottom side of the vehicle as an alternative to more conventional antenna placement positions for mounting high-frequency VHF antenna systems. Altair FEKO EM field simulation methods were applied to assess antenna performance.