1 Watt simple FM transmitter with 1-2 Km range

This is simple 1 Watt FM Transmitter circuit. This circuit will be able to cover 1-2 KM range with a single pole antenna of 20 feet! 

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Descriptions:

P1 act as condenser microphone volume level. For FM, coil will be small. Use thingauge enamel magnet wire. the diameter of coil will be a couple mm: use ink tube from pen to form, and try 8-12 turns. Small inductance coils make for much guess work.

Components/parts  List:

R1=220K R2=4.7K R3,R4=10K          R5=100ohm

C1,C2=4.7uF Electrolytic C3,C4=1nF C5=2-15pF C6=3.3pF

Q1=BC547C Q2=2N2219A P1=25K MIC=Electret Condenser Type