7.8304MHz

                               66-227-1
                               66-227-1
                     66-228-1
                     66-235-1  66-232-1
    66-231-1         66-222-1  66-235-1
           66-234-1  66-233-1
                     66-230-1
                               66-227-1
                               66-227-1