rahulan999, who's the manufacturer of your TEA5711 receiver and what model number is it? Or did you make it yourself?! As far as the superregen, the 3819 might be dead, or not enough regeneration to get it kicking, check the capacitor between source and drain, it might also be a bad choke, I used a ready made 4.7uH wich worked fine, also check the regen potentiometer setting. As I mentioned b4, you can try an MPF102 transistor instead of the 3819, they are better suited for superregens.