In recent years, cellular and wireless mobile communications have evolved significantly, enabling the emergence of various technologies that have transformed the way we communicate. In the context of healthcare, Wireless Body Area Networks (WBAN) facilitate the remote monitoring of patients, collecting and transmitting vital data through devices located around or within the human body. Despite advancements in communication technologies, previous studies indicate that many hospitals face challenges in ensuring adequate coverage due to the complexity of their infrastructures and the interferences that can compromise the signal. The objective of this study is to evaluate cellular coverage at the Centro Hospitalar Universitário Cova da Beira (CHUCB), identifying areas where improvement is needed. Measurements of the radio spectrum were conducted at over 20 points in the CHUCB, using two main pieces of equipment: the NARDA SRM-3006 spectrum analyzer and the R&S®TSME6 scanner. The measurements covered various areas of the hospital, assessing signal strength and connection quality at different times throughout the day. The results indicate that the operators MEO and NOS dominate cellular coverage at CHUCB, although areas such as measurement points 17, 19, and 21 require significant improvements. For the 5G NR technology, the predominant coverage at almost all measurement points belongs to the operator MEO, while for LTE technology, the operator NOS demonstrated the best signal quality. Based on the data obtained, the installation of femtocells is proposed in the identified deficient areas to improve cellular coverage at CHUCB.