How to build simple TV transmitter? Hmm if you interested to make it you can try Advanced Tv Transmitter With Sounds designed by Tetsuo Kogawa. The project also can transmit the audio too.
The project schematic consist of of the two sections: video transmitter and audio amplifying. Both of them actually is transmitters. The main one generates video carrier while the smaller one generates the exact 4.5 (5.5 in some countries) MHz FM audio carrier.
source : electronic circuit