Main function of this system:
1) Record and play,teacher‘s speaking,FM/tone frequency sending,broadcast receiving
and teaching material edition.
2) 100 sending frequency bands available,for adopting the technique of frequency
composition locking.
3) Quiescing methods of SP,SPSP,SSP,SSPS
4) 1-10 times of repetition of sentences or A-B sector.
5) Preset more than 5" bookmarks" for quiescing frequency band memory and fast
searching.