Severe spectrum shortage in conventional bands used for wireless communications has encouraged an increased interest in researching alternative frequency bands, which could potentially accommodate the exponential growth of various wireless technologies. The ultra-high frequency (UHF) band, traditionally reserved for TV broadcasters, in particular, has garnered interest, due to the fact that studies have consistently shown that the spectrum in this band is heavily under-utilized. However, in order to study the true availability of the spectrum and analyze potential scenarios for opportunistic use, it is necessary to have an accurate propagation model for the channel. This paper, derives such a model by using country-wide experimental spectrum measurements conducted in the territory of Kosovo, to optimize the parameters of known propagation models shown to fit the geographical terrain of Kosovo. The model is extended to encompass urban, suburban and rural environments. The model is verified against an additional set of experimental measurement data and shows a high level of accuracy.