... 6.66, 7.61 MHz (Normal mode), 1.57,(optional), 6.80, 7.77 ... degradations (multipath, SFN operation, narrow band interference…) Mode of Extensions Future Extension Frame (FEF) Max Bit ... Layer I & II / HE AAC Audio mode Single track/dual track/stereo Audio sampling rate ... instant and personalized message prompt • Display and withdrawal of subtitles • Support multi-language info6. Additional Hardware ...