## 5 Conclusions
In this scenario, it was possible to understand the effects of power restriction more clearly, eliminating additional variables of NLOS communication. The tests were carried out in a rural environment, as this is the key scenario for 5G-RANGE, and is also the basis of previous tests used as a reference. The analysis of the tests shows that, in open-field scenarios, the technology can reach greater distances with higher powers, while in urban and mountainous areas, propagation could probably be affected by physical and topographical barriers. However, tests in scenarios other than LOS communication were not carried out. Therefore, it is not known for sure what the implications of the regulation would be in NLOS conditions, where natural and artificial obstacles could significantly impact signal propagation, and, therefore, power limitation could be even more detrimental to TVWS services. The potential for practical application of TVWS in the remote and rural areas of Brazil is significant, especially for expanding internet access in low-density regions where traditional telecommunications infrastructure is limited or non-existent. By offering long-range, low-cost connectivity, TVWS has enormous potential to enable everything from essential services, such as health and education, to advanced applications, such as smart agriculture and public safety, with remote sensing applications for precision agriculture, connectivity for autonomous agricultural machinery, and video surveillance for rural security, among others. These results reinforce that regulatory adjustments, such as a controlled increase in the power limit and optimization of OOBEs, could significantly expand the potential use of the technology. By limiting OOBEs, the regulation would allow the adoption of more efficient modulation techniques in terms of spectral allocation, which could serve as technological differentiators between different standards and equipment manufacturers. Finally, imposing stricter requirements on DTV receivers can ensure greater robustness to interference, enabling more efficient use of the spectrum without compromising the quality of television broadcasting. In any case, it is important to emphasize that, even with current restrictions, TVWS networks can offer high-quality services and robust support for various applications in rural and remote areas. Future work may explore analyses in urban, mountainous, and densely vegetated environments, where signal propagation can be significantly affected by physical obstacles and multipath reflections, to broaden the understanding of the feasibility of TVWS in different scenarios. Tests in NLOS conditions will allow us to evaluate how power restriction impacts coverage and signal quality in situations where there is no direct line of sight between transmitter and receiver. This work contributes substantially to the technical and regulatory understanding of TVWS technology in Brazil, providing a solid foundation for the development of public policies and industrial standards that encourage its adoption. With these guidelines, TVWSsystems are expected to play a crucial role in the digital transformation of rural and urban areas, promoting digital inclusion, environmental sustainability, and the advancement of smart networks. Conceptualization, J.S.F., R.A.B.d.L., G.Z. and L.L.M. ; data curation, M.S.B.C. and J.S.F. ; formal analysis, M.S.B.C. and J.S.F. ; funding acquisition, G.Z. and L.L.M. ; investigation, M.S.B.C., J.S.F. and A.R.R.M. ; methodology, M.S.B.C., J.S.F. and A.R.R.M. ; project administration, L.L.M. ; resources, G.Z. and L.L.M. ; supervision, G.Z. and L.L.M. ; validation, M.S.B.C., J.S.F., A.R.R.M., R.A.B.d.L. and G.Z. ; writing--original draft, M.S.B.C. ; writing--review and editing, M.S.B.C. All authors have read and agreed to the published version of the manuscript.