Rating: 2.5/5 (40 votos)
https://pu2lzb.wordpress.com/2010/05/24/prefixo-de-radioescuta/
http://pu3amb.blogspot.com.br/2013/03/como-obter-prefixo-de-radioescuta.html
http://py2mok.tripod.com/radio-escuta.htm
https://www.youtube.com/watch?v=8CgHeXrISKI