It looks like you're trying to visit our USA store, would you like to go to our UK store?

FM Transmitter DIY learning kit

Brand: BuildCircuit
Product Code: DIY0012
Item Location: Sydney, Australia (Shipping Worldwide)
Availability: 8
AU $11.95
2 or more AU $10.95

SOLD MORE THAN 5000 pcs WORLDWIDE SINCE 2013. No complain so far. Works in the first attempt . Excellent kit for beginners.  

If you buy 2 or more, the unit cost= AU $10.95, for example, for 2pcs, the price is AU $21.90 only.

Description: Here's a simple do-it-yourself (DIY) FM transmitter kit. You can use this simple DIY kit to transmit your voice or audio to your nearest FM radio.

You can use this FM transmitter/microphone in two ways:
a. Audio transmission using electret microphone: You can transmit your voice to FM radio with the electret microphone. You can also place the transmitter circuit close to any loud speaker so that the microphone picks up the sound and transmits to the tuned FM radio.

b. Audio transmission connecting speaker stereo jack to audio source: For hearing better sound, you may connect it to your computer, ipod or mp3 player using a speaker jack. The audio of your music players get transmitted to your nearby radio.

It comes as a pack of parts kit and can be easily assembled if you can follow the silkscreen indicators (labels) and have beginning experience with a soldering iron. You will need to read the resistor bands or use a multimeter to determine the resistor sizes. The kit operates with a 3-9V power supply.


  • Frequency Range: 88-108MHZ (Frequency can be changed by moving the adjustable inductor coil).
  • Operating voltage: 3V-9V.
  • Transmission range: The transmission range depends upon the length of antenna used. We send a simple 20cm long wire that should transmit signal around 10m inside your room. The signal can be transmitted ever far with longer antenna of length around 50cm. It can transmit up to 100m in open space.

Kit package contains:

  1. Electret microphone.
  2. Transistor (Q1)- S9018.
  3. R1- 2.2K
  4. R2- 22K
  5. R3- 2.2K
  6. R4- 33 Ohm
  7. R5- 33 Ohm
  8. C1- 0.1uF(Code- 104). Read here how to interpret capacitor code.
  9. C2- 0.1uF (Code- 104)
  10. C3- 680pF(Code- 681)
  11. C4- 30pF(Code- 30). This capacitor contributes to the FM transmission frequency.
  12. C5- 10pF(Code- 10)
  13. C6- 30pF(Code- 30). Coupling capacitor connected to the antenna of the kit.
  14. C7- 30pF(Code- 30)
  15. C8- 0.1uF(Code- 104)
  16. Inductor(L)- 0.1uH (5.5Turns coil). This contributes to the FM transmission frequency.
  17. Antenna- A short wire, 20cm long.
  18. PCB
  19. 9V battery connector
  20. Stereo speaker jack (Shipped from date: 19.11.2013)

We may send 4 color or 5 color code resistors.



Write a review

Note: HTML is not translated!
    Bad           Good

Customers who bought this product also bought:

JST 2-pin cable

JST 2-pin cable

Red and black tinned wires with a 2-pin JST PH connector on the end. 4" / 100mm long. Matches up nic..

AU $3.60

Do-it-yourself (DIY) clap switch for 100-240V AC Appliances

Do-it-yourself (DIY) clap switch for 100-240V AC Appliances

Description: This do-it-yourself (DIY) sound/clap operated switch can be used for switching you..

AU $21.50

Remote operated musical bell

Remote operated musical bell

Remote operated musical bell is one of the interesting experiments every electronics hobbyist would ..

AU $13.95

Solderless breadboard jumper cable wires (65pcs)

Solderless breadboard jumper cable wires (65pcs)

Description:Pre-terminated Male to Male wires for breadboard.Colors: Green, Black, White, Blue, Red,..

AU $6.95

140pcs solderless breadboard jumper cable wire kit box for Arduino

140pcs solderless breadboard jumper cable wire kit box for Arduino

Description:Jumper WiresUsed for breadboard140 pcs of 22 AWG solid wiresPre-cut, Pre Stripped and Pr..

AU $6.95

Powered By OpenCart
BuildCircuit © 2016