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Thursday, June 16, 2011

1 Watt simple FM Transmitter with 1-2 km range!

1 Watt FM Transmitter


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! 


Click on picture  to view the large size

Descriptions:
P1 act as condenser microphone volume level. For FM, coil will be small. Use thin gauge 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


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