usama

Hi, (I am not good in English language). I am student from libya,I constructed the circuit AM transmitter from this site,but it not work, this circuit seem simple composed it from two transistors. I need to your recommendation and notice until work this circuit. Please I am very very needed your help .(in fast) Use i mic from old radio?,(I mean good mic or no) (mic has 2 connection) In (libya) my country not found variable capacitor ,can I use variable capacitor from old radio 500pf ? Notice: when I tested this circuit I change variable capacitor by ceramic capacitor and putted the circuit nearly from music source, then searched By the radio but no received. (The radio seems frequency receiving). Help me if you can I sent diagram and text for this circuit Thank you,, plz faster,,byeeeeeeeeeeeeeeeeeeeeeeeee