This fm stereo transmitter use pll chip MC145151 from Motorola and stereo encoder chips BA1404 with vco built in. MC145151 IC used is to overcome the single-frequency instability in the BA1404. Modulation of the emission control BB910 frequency. B571C kept in control procedures, the procedures required to prepare another. Parts List and Schematic Component Values of the fm stereo transmitter you can find out the schematic. Please download schematic for enlarged image Amplifier section of this FM Stereo transmitter uses a single 2sc2053 transistor with power out about 250 mWatt.