Radio Stadtfilter is an alternative radio station from Winterthur, which is allowed to broadcast its program on a frequency of 96.3 MHz for Winterthur and has been broadcasting 24 hours a day since March 7, 2009 with a concession. Stadtfilter is a member of UNIKOM, the association of non-commercial radio stations in Switzerland. Since 31 August 2014 Radio Stadtfilter has also been broadcast on DAB in the greater Zurich area, Aarau and Winterthur.