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1-2 Kilometer FM transmitter

1-2 km. FM Transmitter

The above picture is 1-2 kilometer FM Transmitter with an easy schematic diagram.
Input source is an electret condenser microphone and signal gain can be adjusted by using the potentiometer P1. You can easily prepare the PCB by using any PCB editor and apply it to the board by using the ironing method. The coils and the antenna can be designed as a part of the PCB made up of the copper area. 


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

The above information is from this link: click here
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Comments

  1. HenrySunday, August 21, 2011

    This must be your area of expertise, schematic looks simple and the devices can be easily found. Nice post!!!

    ReplyDelete

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