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Tuesday, December 22, 2009

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)



26 comments:

RedDevil said...

frequency?

Zam said...

The frequency is 88MHz to 108MHz.By changing the coil you can change the frequency little bit like 80MHz to 110Mhz

MarinoBlogs said...

Pliz ineed to knw the watt of the resistors and volts in capacitors,my email amarinompotwa@yahoo.com

Zam said...

use 1W resistors when you use capacitors use over 24V

ravichandra said...

ya may i get any extra robot circuit diagrams

Zam said...

Hi,
sure I'll try to give you some robot circuit diagrams.

katwaaritubai said...

Which type of antenna is used in it..plz tell me.ma mail id is arijit.ece.imps@gmail.com

Zam said...

use two telescope antennas

sanket said...

plz , tell me how L1 & L2 works?

Hitesh said...

VK220J type RFC. what is this mean ? give some examples,

sivaprasad said...

could you explain the circuit diagram given above...my email id is siva.prasad046@gmail.com

Unknown said...

How big should the antenna be in diameter, width, breadth and of what material should it be made? Is there a way one can extend the signal or make the diagram more compact?

Unknown said...

Hello friends i maid this Fm transmitter successfully . you can get the all details from this link http://www.kpkpkalpesh.blogspot.in

Zam said...

Use about 1m length two antennas

Zam said...

Use about 1m length two antennas

Unknown said...

which metal for antennas

Unknown said...

please get me the reciver circuit too..........

jinad said...

please, i need the mathematical analysis of all the components used in this circuit. my email; jinadu.braimoh@gmail.com.
i will appreciate your kindness



jinad said...

please, i need the mathematical analysis of all the components used in this circuit. my email; jinadu.braimoh@gmail.com.
i will appreciate your kindness

Unknown said...

I tried FM Transmitter circuit. But, It is giving noise. How can I rectify noise from my transmitter

Zam said...

I think there should be a little distance between the main transistor and the coil.Some times your coil can be too closer to the transistor

Bhavik Bhansali Blog said...

plz explain that how to make VK220J type RFC inductor.

Bhavik Bhansali Blog said...

I tried this circuit but in market vk220j type inductor is not available. so plz can u explain how to make vk220j type inductor ?

Zam said...

And one more thing you should supply DC current to minimize the noise.and you can do the following way to build L3. Use 28 SWG 250 turns on 6mm former 5mm width honeycomb winding If you have any matter I'm ready to help you my friends

Mark Lee said...

I recently came across your blog and have been reading along. I thought I would leave my first comment.I don't know what to say except that I have enjoyed reading. Nice blog. I will keep visiting this blog very often.

fm transmitter for car

Unknown said...

Excellent work and great opportunity to learn!!
ثريات ال أي دي

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