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1.5 Watt FM Transmitter

This is 1.5 Watt FM Transmitter circuit. This circuit should be able to cover 1-2 KM range.

1.5 Watt FM Transmitter circuit

Components 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

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.

Categories: Radio
Tags: 1.5 watt fm transmitter,  circuit diagram fm transmitter,  circuit diagram of fm transmitter,  fm radio,  fm transmitter,  fm transmitter circuit,  fm transmitter circuit diagram,  radio circuit,  radio transmitter,  simple fm transmitter circuit,  simple fm transmitter circuit diagram,  transmitter circuit diagram, 

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40 Responses so far.

  1. chanuka sandaruk says:

    send this diagram

  2. Emmanuel says:

    Hi emmanuel pls i need 1000w fm transmitter circuit diagram and power amplifier for school assingments. Thinks from emmanuel

  3. Thushan says:

    How do I make this coil Please tell me

  4. dave scotland uk says:

    this is nothing more than a power oscillator running or using this type of design for anything more than testing within the home is very unwise. the circuit does cause very bad harmonics witch causes RFI on the upper and lower bands. i.e transmitting@100mhz causes RFI @200mhz ,300mhz, 400mhz and carries on the same on the lower bands as well.. aslo with this type of circuit the final transistor(2219) gets too hot causeing the transmission freq to drift -/+ 2-3mhz. i have many designs i have made and still use today. if any one would like a diagram. just let me know mail me dee_stew77@yahoo.co.uk

  5. muhammed t a says:

    i want +ve,-ve of c1,c2 and about coils

  6. muhammed t a says:

    i want +ve,-ve of c1,c2 and about coils
    mommad786@yahoo.com

  7. ogene vincent says:

    i was given a project topic to build am fm reciever 100w.my problem is i dont know were to start,wat i need and the components needed to build it.plz cam u help me

  8. UKAIRO MICHAEL KALU says:

    please I’ll be happy if you can send me this circuit diagram with the polarities of the capacitors. please Ineed this for my school projects
    (+234)8063409127

  9. Thanks for all emails for diagrams i am now selling transmitter and transmitter kits 1.0watt to 50watt Please email me if you with to buy thanks

  10. Adit lessai says:

    Are there more than 75W tx FM circuits? I need it.

  11. mohsin says:

    2-15pf is not avelebal

  12. actually, they are available on market… :)

  13. need a strong AM reciever and transmitter of same freq..

  14. THank’s 4 this fm transmitter circuit.plz.can u help me buy and ship the correct component 4 this work?
    Thank’s
    Alex.

  15. manpreet says:

    in this ckt carrier is not available…..then how we modulate signal

  16. nwafor says:

    please i need electret mic for my fm transmitter.any one who how i can get should please inform me.amobioke@yahoo.com

  17. isaac antwi says:

    i need 5000watt or 2000watts invertor circuit convert 12v d.c to 220v a.c for small enterprise please try hard for me.isaac522002@yahoo.com

  18. chris says:

    i am looking for a fm transmitter or circuit diagrams how to build one thanks to anyone who will email me at halfpint2470@yahoo.co.uk

  19. Sanusey says:

    i am looking for the components of an fm transmitter the materials needed to set up one or circuit diagrams how to build one i am making is for my assignment and also to widen my knowledge in electronics. thanks to anyone who will email me a shakorbantang@yahoo.co.uk

  20. koffi says:

    i need a radio receiver circuit diagram with built-in amplifier that is 3-9volts

  21. Arif_BPI_Bangladesh says:

    I want +ve _ve of c1,c2 and how do i make this coil ?

  22. kadam balasaheb sadashive at.naraled says:

    thnak you for this circuit

  23. stupido says:

    can i just buy that coil? im having problem in making it :) PLEASE HELP

  24. Madhav Humagain says:

    Sorry but We cant get 2219 here. Which next may replace it?

  25. Eranda says:

    if you know somewhere I can get a receiver diagram for this transmitter Please let me know @ erandahasithapriya@gmail.com

  26. paul says:

    pls i need a transmitter and step by on how to develop an atm by pass

  27. A.M.MAHVY,MUMBAI. says:

    I HAVE ASSAMBLED IT,EASILY FOR MY SON PERFECTLY WORKING,I PUT IN SMALL BOX.ALL COST ME RS.130/ONLY.

  28. A.M.MAHVY,MUMBAI. says:

    I JUST ADDED .01CON.IN PARALAL,TELESCOPIC ANT.AND 9 V BAT. TO MAKE PORTABLE.

  29. Kellen Katumusiime says:

    I am working on this project of a 1.5W FM transmitter circuit. Please tell me the diameter of the inductance coils that i can use in this project. Am looking forward to receiving your response.

  30. kehkashan says:

    how this circuit works..explain its working

  31. A.M.MAHVY,MUMBAI. says:

    22 SWG. 8 TURNS,3MM DIA. CLOSE WOND, C 6 4.7 PF, AT LEAST 1 MTR. TELESCOPIC ANT.TO COMPLETE COLPITTS OCELIATOR.

  32. vivek says:

    can anyone please tell me what is the frequency in which the FM transmits for this circuit????
    thanx in advance

  33. A.M.MAHVY,MUMBAI. says:

    WE CAN CONNECT 3.5 MM CONNECTOR AFTER PUTTING TWO1MEG RESISTORS INSTED OF MIKE & PLAY MUSIC FROM MOBILE.IT TRANSMITS VERY GOOD SOUNDS.

  34. ashok says:

    in the recevier which frequency we will tunnig

  35. neeraj says:

    i want to know how i joint the P1,Q1,Q2. and what is the use of P1. i have made this circuit but its range is very poor. what can i do for this condition. please tell me.

  36. neeraj says:

    sir i could not find the C6-3.3pf.which capacitor i can use at the place of C6.

  37. nick says:

    hey, how to calculat frequancy of circuit. Please give me equation of calculation

  38. KALPESH CHHABHAIYA says:

    A.M.MAHVY,MUMBAI plz can you help me to make this fm transmitter i from surat, gujarat. plz can you give me you e-mail add…… ?

  39. KALPESH CHHABHAIYA says:

    HELLO FRIENDS,
    I MAID THIS PROJECT SUCCESSFULLY. WITH PROPER FREQUENCY AND STRENGTH.IF YOU WANT HELP THEN CONTACT ME ON kpkpkalpesh@gmail.com or at 08866792042…… i will surly help you to bring out you from the problem :)

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