This is the 16064th most frequent Russian word.
радиовещательных
"Радиовещательных" means "related to broadcasting."
In this sentence, "радиовещательными" is used as an adjective describing the companies that are engaged in broadcasting, showcasing the word in its instrumental plural form.
Наш университет сотрудничает с радиовещательными компаниями.
Our university collaborates with broadcasting companies.
Here, "радиовещательных" is used as an adjective modifying "станций" in its genitive plural form, relating to stations involved in radio broadcasting.
Законы регулируют работу радиовещательных станций.
The laws regulate the operation of broadcasting stations.
The term "радиовещательных" in this sentence functions as an adjective describing "сервисов" in the genitive plural form, referring to services linked to radio broadcasting.