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MAX2606 Mini FM Transmitter

With MAX2606 we can make a small mono fm transmitter. It is build with MAX2606 and covers at least 20m with 1.5 m long copper wire antenna. You can use this transmitter as an oscillator but change the 1000pF capacitor from the antenna with 15pF.

MAX2606 transmitter output power is -10dBm, that means something around 100µW (micro-watts) = 0.0001W. Of course this is very low, that’s why we recommend you to use an auxiliary power amplifier if you want to build a more powerfull transmitter based on MAX2606. You can find a few fm power amplifiers on electroschematics.com so please use the search box.

Max2606 transmitter circuit diagram

stereo-mini-transmitter-max2606

22 Comments

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  • Alex Pena

    Can someone please send me instructions ; step by step PLEASE
    I WANT TO BUILD ON MY OWN.
    I am currently enrolled at ITT Technical

  • Jose

    can someone please explain how this circuit works step by step I am trying to build this in class and I am in need of better understanding please help.

  • udhay

    Dear all, The thread is started long time back & i hope this project will never got age…
    I have few NJR2035 Stereo coder IC’S so i need a miniature stable FM transmitter. I am going to transmit my TV audio signals to my cell phone FM radio…

    My question is what’s the coverage range of this transmitter. One of the member mentioned that it will cover for 10 to 15 meters. Anybody tried this, is it true? I need 10 meters transmission range without any interrupt. Is it suitable for my application?

    Thanks & regards
    Udhay

  • Tushar Gupta

    How do you actually use r1 and r2..or we can keep it at a constant value..??

  • Sid

    Does it work in 88-108 Mhz range???

  • Carl

    Hi everyone.

    Great circuit for testing homebrew FM receivers. The MAX 2606 IC is available from http://www.maxim-ic.com/ I got four free samples last week.

  • suesue

    Hi everyone. can you help me.
    i’m wanna complete my final year project about ECG Telemetry using Frequency Modulation.
    I have done some research and try some circuit on multism but it didn’t work. I have problem with transmitter circuit. Back to basic I just using transistor CS9016 for RF. it not work. i din’t know.
    so please somebody here help me.
    this is my email suhaidashahabudin@gmail.com

  • saurabh

    can anyone tell me where to get this IC in INDIA ?
    i am specifically looking for this IC for a Long time now for one of my projects in Mumbai.

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    • hari

      You can get any ICS from online electronic store. If you find

  • Ashutosh

    Hello Sir ,

    Thank you for your sincere reply

    Sir can i knoe if we can use any power amplifier after this circuit in order to increase a transmitting range and a good antenna design …

    Pls help me out with this thnk u

    • Awie

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  • Ashutosh

    Hey Hi,

    I just want to know if i want to increase its range to 500m how can i do this…..

    Waiting for ur reply ….

    pls do reply as soon as possible

    • ElectroSchematics.com

      Hi Ashutosh, I just published an 1 watt fm amplifier, it is not quite good for use with this transmitter because MAX2606 outputs a very low rf power. You can check the fm transmitter section and use parts from the diagram in order to obtain a good amplification.
      For a range of 500m you must know that you also need a good antenna, cable and a height. The output power must be around 500mW for a good coverage of 500 meters area.

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