Complex sentence: Besides the AM broadcasts, All India Radio has an FM, or frequency modulated, channel called Rainbow FM, broadcasting at 105.4 MHz. Since 2006, the FM channel broadcasts locally produced programs between 4.30 am and 12 midnight.
Split into simpler sentences: Besides the AM broadcasts, All India Radio also has an FM, or frequency modulated channel. It is called Rainbow FM and is broadcast at 105.4 MHz. Since 2006, the FM broadcast is from 4.30 am to 12 midnight.