By 2006 , the station debuted it HD - 2 secondary signal .
In the spring of 2005 , WERV - FM became the first suburban Chicago station to broadcast a digital HD Radio signal .
By 2006 , the station debuted WERV - FM HD - 2 secondary signal .
In the spring of 2005 , WERV - FM became the first suburban Chicago station to broadcast a digital HD Radio signal .