2Km Fm Transmitter circuit Diagram

This is a powerful transmitter so first of all I would like to tell you not to use this for illeagl things.You can transmitt signals from 2km.Use a matching antenna for this.


Note

# Don't give power without an antenna
# For L1 make 3 turns of 1mm enamelled copper wire on a 10mm diameter plastic former. On the same core make 2 turns of 1 mm enamelled copper wire close to L3 and that will be L2.
# by using R9 the gain can be controlled
# Inductor L3 can be a VK220J type RFC.
# This circuit operates with 9V to 18V ( Dont pass 24V)

FM Transmitter Bug

This is a FM transmitter circuit.the spacial thing of this circuit is, this circuit can be fixed in a small space.The coil is four turns of 18swg wire wound around a quarter inch former.After turning one and a half turns from the supply end tap and fix the aerial.


Note

# This circuit is not legal one so don't miss use this.Though you did like that we can't get the responsibility of it.

# This circuit can be operated with 9V power supply.

Tracking Transmitter

This is a tracking transmitter.Normally we use these thing to track animals,Rc planes etc.The power of this one is about 3.7mA.This circuit can be operated by using 1.5V button cell.The operating frequency is FM 100Mhz .But if you want to use it between 108Mhz to 88Mhz you have to use Just spread the windings of the coil just a bit About 1/2 a millimeter .This is wonderful project. Have fun with this.


Note

#This is not long range one but you can get the maximum advantage
#supply 1.5 v
#Attach 12 inch antenna
#Search until mmmmh mmmmmh mmmmmh mmmmmh sound comes from your radio set

FM Antenna Booster Circuit Diagram

This is a FM antenna booster circuit diagram.This helps you to get clear fm signals to your radio.The well important thing of this circuit is spending less money to build up this.Try this...

Dipole Antenna for FM Radio

This is dipole antenna.when you build this you should get the same length.If not you will not be able to get the maximum harvest.Use 60-75 ohm coxial cable.

Note

# when you use insulators becareful.Because if they grounded you cant get goot result