Campus radio plays a pivotal pedagogical role in Nigerian tertiary institutions by fostering students' communication skills and media literacy through experiential learning. While about 50 licensed campus radio stations currently operate nationwide, their influence on educational discourse and youth development continues to grow. These stations offer student broadcasters a platform to engage in real-time news delivery, public dialogue, and media content creation. However, a persistent challenge is the frequency of linguistic inaccuracies—specifically grammatical and syntactic solecisms—committed during live broadcasts. Such errors can undermine language norms, disrupt listener comprehension, and diminish the professional and educational value of campus radio programming. This study employs a qualitative longitudinal design incorporating participant observation and linguistic error analysis to examine 50 recurrent solecisms identified across four purposively selected campus radio stations in Lagos, Oyo, and Ogun States over 12 weeks. The study categorizes errors under grammar, redundancy, lexical misuse, code-switching, and structural awkwardness. These linguistic lapses often stem from mother tongue interference, Nigerian Pidgin English influence, and insufficient editorial oversight. Framed within Gatekeeping Theory, which emphasizes the role of media agents in filtering and shaping public discourse, the study assesses student broadcasters as linguistic gatekeepers who impact language usage and norms among their peers. The findings reveal systemic gaps in language training and suggest that unchecked errors may contribute to fossilized incorrect usage among both presenters and listeners. To mitigate these challenges, the study recommends pedagogically informed interventions such as broadcast language clinics, structured mentorship, the use of style guides, and institutional reforms. By addressing the underexplored linguistic dimension of campus radio, this research contributes to the fields of applied linguistics, media education, and communication studies, while promoting higher standards of linguistic competence in student-led broadcasting across Nigeria