Issue #2111: Added properties for radio subchannels. (#2144)
Issue #2111: Added properties for radio subchannels. (#2144)


schemaorg/schemaorg,schemaorg/schemaorg,schemaorg/schemaorg,vholland/schemaorg,schemaorg/schemaorg,schemaorg/schemaorg,vholland/schemaorg,vholland/schemaorg,vholland/schemaorg