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Recent development in the area of antenna is now primarily focused on minimizing the size of the antenna without any effect on its performance. Proposed work presents a UHF (400-520 MHz) low profile vertically polarized similar to a short monopole antenna with compact and mechanically stable structure for mounting on to the roof of the Heavy duty vehicles such as Trains. It can also be employed with a ground plane (roof surface/rooftop) as in vehicle antenna is consider advantageous because the desired direction of communication are mostly independent of the orientation of the vehicle. It is made up of the less than /32 dimension in height and /8 in lateral dimension. The simulation is carried out by using CST Microwave Studio Program 2014. The effect of the antenna parameters on the bandwidth will be investigated.It is easily embedded on the roof of the vehicle with proper gluing. Moreover, the proposed antenna is simple structure, low profile, easy mounting and relative good bandwidth. Simulation and Experimental results are also shown that the antenna features excellent 50 impedance match and nearly omni-directional in horizontal plane over a majority fraction of bandwidth.