We are the first commercial radio of Castelo do Piauí - Pi. Radio Castelo Fm 103.5 MHZ is a Brazilian radio station operating on digital modulated frequency, where sound reaches the highest level with the best quality, bringing and bringing accurate information with impartiality and credibility to our listeners and advertisers.

And now we are online, on our website www.fmcastelo.com.br and through our App you can interact with our speakers and participate in our programming.