OurAirports has records for 5 different navaids with the identifier "FS". Please select the one you'd like to view.
Canada
375 KHz (FS ..-. ...)
..-. ...
Norway
396 KHz (FS ..-. ...)
Russia
780 KHz (FS ..-. ...)
United States
245 KHz (FS ..-. ...)
223 KHz (FS ..-. ...)