## 4 Conclusions and Future Work  
This paper presents the measurement setup and results of an ad hoc campaign aimed at detecting unwanted signals in a portion of the C-band (4-5.8 GHz) around the SRT site. The goal is to provide astronomers with a comprehensive overview of the RFI scenario detectable during SRT observations using its C-low receiver, which operates in the frequency range of 4.2-5.6 GHz. To achieve this, three strategically chosen geographic points were selected for the measurement setup to cover the entire area surrounding the telescope at altitudes comparable to the position where the C-low receiver is installed on the SRT. This approach ensures that every antenna pointing direction at low elevation angles is covered. The results highlight a significant presence of RFI at both the beginning and end of the examined C-band portion (4-5.8 GHz). Thanks to the results of this work, astronomers can implement a range of mitigation procedures during observations and data reduction, such as removing RFI with appropriate software or configuring the telescope to observe in RFI-free areas of the band.  
As a future work, a new measurement campaign could be planned to detect all unwanted signals self-generated by the control electronics of the equipment within the telescope. This equipment may include radio astronomy receivers, control systems for the movement of the telescope's mirrors, and more. The campaign will be conducted directly inside various sections of the antenna, aiming to identify the devices responsible for generating these unwanted signals and to implement mitigation procedures. Additionally, the measurement campaign presented in this paper could be repeated periodically, for example, once a year or every two years, to provide users of the telescope with an up-to-date RFI scenario. Furthermore, a new measurement campaign could be conducted using both the SRT and the mobile laboratory to facilitate a more detailed study of the detected RFI signals, including their amplitudes. This would involve employing radio astronomy back ends and presenting the data in formats typical of scientific observations. Finally, a real-time monitoring system for RFI could be implemented to provide added value to astronomers during scientific observations.  
In conclusion, the work presented in this article, along with the proposed future developments, can be extended to all frequency ranges covered by the SRT receivers.  
Conceptualization, L.S. and F.G.; methodology, L.S. and F.G.; software, L.S. and F.G.; validation, L.S. and F.G.; formal analysis, L.S. and F.G.; investigation, F.G.; resources, F.G.; data curation, L.S. and F.G.; writing--original draft preparation, L.S.; writing--review and editing, L.S. and F.G.; visualization, F.G.; supervision, L.S.; project administration, L.S. and F.G.; funding acquisition, L.S. and F.G. All authors have read and agreed to the published version of the manuscript.  
**Funding:** The Sardinia Radio Telescope is funded by the Ministry of University and Research (MIUR), Italian Space Agency (ASI), and the Autonomous Region of Sardinia (RAS), and is operated as a national facility by the National Institute for Astrophysics (INAF).  
**Institutional Review Board Statement:** Not applicable.  
**Informed Consent Statement:** Not applicable.  
**Data Availability Statement:** Data are contained within the article.  
**Acknowledgments:** The authors thank the administration of the Cagliari Astronomical Observatory and [PERSON], technologist and head of operations of the Sardinia Radio Telescope, for the administrative and logistical support that contributed to the success of this measurement campaign.  
**Conflicts of Interest:** The authors declare no conflicts of interest.