How to build a FM radio transmitter
ฝัง
- เผยแพร่เมื่อ 27 ส.ค. 2024
- Circuit & Component layout: 0:33 in the video
Feel free to leave a comment if you have any questions or concerns.
Music by: e-soundtrax
Parts list:
-Transistor
2N3904
-Trimmer capacitor
2-22pF
-Electrolytic capacitors
2X 47uF
-Ceramic capacitors
3X 1nF
10pF
33pF
-Resistors
22k
39k
47k
100R
-Wires
-Copper wire (~0.5mm diameter)
-Prototype board
-Antenna (anything you like)
-Audio plug
-9V Battery clip
-9V Battery
Tools:
-Soldering iron
-Solder
-Pocket knife
-Cutting pliers
-Mini pliers
-Bolt (~5mm diameter)
-Ruler
-Lighter
-Candle wax
-Electrical tape
The best and most productive way to gather the parts for this project is to take apart and salvage old and or broken electronics appliances. This may take some technical skill.
The safest bet is to purchase a fresh set of parts and tools (if you don't have them) Here are a couple online web-stores which sell the parts and tools needed for this project:
www.amazon.com/ - amazon has all the parts and tools needed for this project. However, amazon tends to sell electronics parts in large bulks which means you are likely to pay for parts needed to build around 100 of these transmitters.
www.conrad.com/ce/ - One of the greatest electronics web- stores in western Europe. You can cheaply buy individual parts needed for this project.
www.lemona.lv/i... - One of the best electronics web-stores in eastern Europe. You can buy the parts needed for this project at very low prices.
www.radioshack... - One of the most popular electronics web stores which ship worldwide and sell all of the components at low prices.
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just making an electronic project but the song makes feel like saving humanity
You can think of it that way
You would be saving someone if I could practice my avalanche beacon in the back yard before heading to the mountains. Problem is that avalanche beacons cost around $300 and I can only afford one. But to practice all I would need is something sending out a 457kHz signal for me to track.
In all honesty this is a very serious safety issue and I would not put my life on a simple electronics circuit. This transmitter for instance is indeed very cheap, next to nothing, but due to it's simple design it isn't the most stable, and is very unreliable for what you are looking for. If you want a transmitter that can keep a steady and clear long range frequency, you are looking at a much more sophisticated circuit. But if were talking about your life in the avalanche, the beacons cost 300$ because they are designed to work effectively and reliably at all costs because your life is priceless.
I already have a beacon. I have taken 2 avalanche classes. This is not what I am using it for because it doesn't have a receive mode. It only has a send mode. This is for practice using my avalanche beacon to locate the signal. In practice we put 3 beacons out and we have x number of seconds to find them. Hard to practice when you only have on beacon.
Cleiton Felipe oh I know right!
This background music makes me remember my mom, she's at home and I'm in my room. Miss you so much mom!
The best melodramatic scene for soldering electronic circuit.
A very touching video about making an FM Transmitter. Thanks a lot. I'm building this project. :D
It's a heart touching story about an electronic transmitter
Best project vedio ever see!!!
I'm trying to follow it to make my own FM circuit. I'm testing the circuit in MultiSim and not getting desired output. The oscillations in the circuit die out. Can you give me the value of inductor you made. Also, what type of oscillator have you used? Hartley oscillator? Did you ground the antennae?
I also tried it but I fail. Transmitters are so hard to make. I don't know if my components are not good or my place is full of radiation from repeater towers
Lukas Ekers What type of oscillator have you used. Also can you describe how the circuit works.
I cried watching a video on how to make a radio transmitter. Nice!
Wtf why
@@danielchoung6862 because the background music
the music brought tears to my eyes, it was so emotional
Nice job! I haven't touched a soldering iron for decades but this project makes me want to start again!
no bs video & less talking. good song & no bs description. you got sub man
muhammad N Abdullah yea
muhammad N Abdullah excacly
U bs
dude amazing vid but pls choose a different BGM😅 it felt like someone died
Turned wounded and lifeless components into a working transmitter.
Suku Son Fact Bro
😂
The power died
i thought this was an apple advertisement
This is how apple started
Man, yo make me the day!
Lukas Ekers i am able to tune the frequency (by searching stations in Mobile) but radio set is not able to play the song(i.e i am not able to hear anything) please help me to sort this out
It was my 1st fm radio transmitter project in 2017, when I saw your video in youtube. I always remember that day, I was successful to make it properly... by seeing this tutorial. Cordially... Thanks❤️
Wow actually this is the best explained video I've seen
CLEVER. SIMPLE AND PRACTICAL. WELL DONE
*"simple"*
Kelpo Gaming
It's actually pretty simple if you know what youre doing
I like the cast part. Great teamwork
Haaa
Thank you very much, Lukas. I'm just bringing back an old Christmas tradition, and it requires this.
Can you tell me how you plan to use it?
That candlewax will also prevent or delay corrosion from ruining your solders and breaking your connections!
Good thinking with that one!
😭😭😭😩The FM transmitter makes me feel so sad 😩😩😭😭
Another song would be perfect! Because its to sad for this kind of video.
Jankinam this music is like the music you play when a soldier comes back home or something
Yes! You'r absolutely right!
Or the story of a transmitter coming to life
can we have a tutorial on the physics involved? or the specific function of each component, and the reason for each value
i also didn't like the music. I't like funeral music.
I bought all the parts and started making this project at home. It works!! I felt like Dexter for a whole day, with my wrench adjusting a trimmer (kidding).
Thank you sir !
bro i need to contact coz i need to make it in 2 days in any dead situation
@@piyushv5739 yo bro wazzup ?
@@VladSandu79 yo ,,, do you have whatsapp that would be easy to contact???
Music meaning- deforestation is major problem for humans, animals and other living creatures and for environment. So to cope this problem a scientist found a solution that is save trees and afforestation and then this music starts to play.
This was the deep meaning behind this music.
Thanks
the background music made me cry
It's a touching video innit
it gives the information so clearly. Great video !
Thanks for this, I've seen some similar video's, but they either required you to make your own board with chemicals, they require some hard to find FM module, or they assume you want to use a small mic. instead of an active signal from an mp3player. This one is exactly what I'm looking for and it's actually accessible enough for a total noob like me to try.
I'd love to see more video's about FM recievers or AM recievers/transmitters from you. Or maybe a Stereo version of this thing if it's not a lot more complicated. For now this video should keep me busy for a little while though :)
That's exactly what I wanted to build too. Though in future videos you find, you can easily get around building your own board using chemicals by using the same type of project board i used in this video and simply making the connections yourself as done in this video.
Awesome :) And yeah that's true, I just found some of that board in a local webstore, so that should make other projects a little easier.
As an iPod Shuffle lover, the thumbnail got this video an instant like :D
haha thanks
respect for this dude!!!
I've made it and it's fantastic
At work frequency ????
i love this kind of transmitters and i just love this kind of music in this video, that is a perfect video for all my friends and me
I apologize - I'm sorry if I sounded harsh. The video is good, though. I made a camera clamp from a C clamp, a 2 foot long piece of heavy solid copper wire (6 AWG), a 4 inch long 1/4" - 20 bolt with wing nut, and hose clamps to hold it together. It does a good job for less than $10. Thanks.
It's fine I just wanted to make sure you knew the other details.
so inspirational
Thank you for the very professional video.
what calculations you had to do to come up with these values for the circuit components?
I would like to see the math behind it if that is possible. I will be waiting for your response.
There weren't many calculations in this project instead there were a lot of experiments. However, I did have to calculate the inductance of the self made coil using this equation: Inductance = (d2 x n2) / (18d + 40l). The inductance of the coil used in this transmitter is 0.05uH. I also had to calculate the inductance of 2 halfs of the uH coil which was needed for the antenna tapping in the LTspice circuit, but that was basic math.
Bro you made a simple project like a movie damn good 😁🤘💀🤙
Die analoge Technik wird nie aussterben. Guter Film
Nice expensive looking house
This music made me sad..and miss my mom..she is abroad
:)
Paramesh Subramoni Why not talk to her using your own FM radio? 😂😂😂
My mom ia a broad too.
You did a very good job. Now the next step you can do is to QRO with an amplifier, then broadcast to your city. : )
How would one ''theoretically'' do that?
I learned something very useful from this video: how much I fucking suck at soldering. Not even just on perf board, but in general. Didn't burn myself, but didn't make a functioning circuit.
thank u Sir its very helpful.
wow, it's just a few transistors, how it works? Can u describe it in another video, (why this can receive signal and overall what is what) sorry for my english
kornisz823 It doesn't receive signal. It transmits signal
UAU, Im crying... of joy, cuz out there are amazing people!
Lol they are all talking about this music. And no one is talking about how this guy is a genius. Oh and i also enjoyed this music
The FCC wants to know your location
Plug the audio jack into a microphone and you can cast your voice
Yes, that is absolutely possible
+Lukas Ekers was that sarcasm? Please correct me I'm only a noob with electronics
adam kendrick
No, not at all. It's one of the possible uses of this device. To be more precise, this should work perfectly fine if you have a readily available microphone setup with an audio jack in it. Other wise I am not sure If It will work as expected if you were to simply attach a microphone component as it alone sends out minute signals which may need amplification. So the device is designed to accept stronger signals from sources like a music player or a readily available microphone set up.
+Lukas Ekers Thanks! Wonderful video btw
+Lukas Ekers By the way, where do you buy all these parts???
I have nothing else to say except BRILLIANT
It work's very good, and it's quite stable. Thank you! :) I made project of circuit board in Eagle. - i couldn't find 2n3904, so i just used BC546
It works with BC546? Glad to hear!
wow
nice. cant you transmitt any Sound you want if its strong enough?
of course
Bernhard Blietz yep you can even send your bitch ass voice, ranting over some bullshit
a que frecuencia transmite el circuito? saludos y excelente video
I cant tune mine to the frequency I want. What can I do. When I adjust the variable vapacitor I can cleary hear the music coming out from my radio but as soon as I remove my screw driver I can't hear the music. IT ISN'T STABLE. How can i solve this problem??? 😞
It is stable, but your freaking screw driver is made from metal. You are basically changing the capacitance by just touching the capacitor by increasing the surface area. Use wooden stick or plastic to tune trimmers.
Lucas is a busy guy!
the schematic is wrong its +9v and gnd not +9 , -9
Not really.. -9 represents the negative terminal of the battery which is pretty much the same thing. You get the idea.. It was done this way for the benefit of less experienced viewers. Ideally you would name it ground, where every component going to ground will be pointed downwards to a ground symbol. This makes things more difficult to follow. This circuit is designed to act as a template that you can use to build the circuit on a project board so it's easier for beginners to follow.
yeah ikr its very obvious and my comment can be ignored but the differential of -9 and 9 is still 18v
hey, can i use this to transfer signals to old nokia phones with FM radio????
Yunik Maharjan If it has an fm radio, then obviously yes.
It's actually not the same things, because -9 and GND makes GND kind of positive ;) but it's understandable enough for this diagram
Can I use 1,8-22pF trimmer?
yes
Lukas Ekers hello, can i use 20pF trimmer?
Well filmed and put together. Thanks.
So glad it's not one of those edm cancer tutorials where they don't even explain what the fuck they're doing.
Man soldering is very sad
This is totaly FAKE! You can clearly see the wire!
Tell that to the 10000+ people who built this transmitter
haha, im just joking, its an electrician joke ;)
I was thinking it could be a joke
Dude didn't get the joke
This is fake.
can u suggest replacements for the parts
I like the music of your video
This is the best project video ever
Thank you
you are smarter than Albert Einstein because you can use smartphone but Albert Einstein can't use smartphone
girdhari bhagat Because he wasn't born in the time of the smartphone.
it has big mind so why they don't make smartphone
I never bragged about being smarter than everyone.. This is not your first comment about this and you're getting the wrong message here. But.. I actually did not use a smartphone (except as a radio) or much of any other technology for this project, It was mostly hands on experimental research which is how I prefer to work, so does this make me as smart as Einstein?
cause he's dead
*LOGIC INTENSIFIES*
Btw the wax is not for insulation. It is for blocking unwanted radio signals.
A Faraday cage might work a bit better for that.
Only on the bottom part.
Can you make a video of your background on salvaging and experimenting with such things.
I would love to hear or read your stories behind them, whether you were interested since you're a kid, or something else.
Me and other people are really interested in hearing stories like these.
I can give you a little story right here. Since a toddler I was intrigued by construction workers, and how they build things. When I was in kindergarten, I started exploring the art of construction by building random structures in the sandpit using random materials that the kindergarten provided for me. Then one day my father had access to broken furniture and wooden planks, and we built a little treehouse in the balcony. I then took the remaining materials and built a copy of this treehouse in the living room myself. I was also very interested in legos too, and I enjoyed building all kinds of cars. At the age of 6, my father brought home a soldering iron and we put together a simple electronics circuit using scrap electronic parts (basically a circuit where you can turn on some LEDs, motors, etc using switches). I became intrigued by how you can make scrap electronics come to life by soldering the components together and started experimenting by taking apart broken electronics and built random devices that make use of their components so I learned about building electronics circuits simply my experimenting with electronics components. In grade 10, I had to do a project and I decided to build a radio transmitter to wirelessly transmit audio to car radios which don't have Bluetooth functionality. The project had to have a contribution to society, so I decided to make a video tutorial so people can learn how to build this device themselves, which led to this video. I also became interested in the sport of mountain biking, and living in a country where mountain biking wasn't very popular meant that there was a lack of bike shops that could fix my mountain bike. So I learned how to fix all kinds of issues on a high-end mountain bike, including lacing wheels, servicing suspension, and even replacing the pistons and seals in hydraulic brake calipers. At the same time, my attention to detail was growing and I enjoyed building detailed replicas of cars using Lego Technic (some of those creations are shown on my channel). At that point, I realized that I had an interest in mechanisms and constructing them, so I am currently pursuing a degree in mechanical engineering. This channel serves as a platform to showcase my hobbies and share projects that other people might be interested in.
With the background music I thought he was having a funeral for his transmitter
It was a funeral for the free time I could have had instead of building this transmitter.
wow good work sir i also made one for my school project
Imagine installing this thing in a powerful radio transmitter tower and speaking at radio!
Luigi Cotocea All it needs is a couple signal amplifier stages and a suitable antenna for it.
amazing vid and song no matter what
Stereo audio transmitter would be excellent
The stereo signal is converted into mono in the transmitter, however when the signal reaches the radio, the music plays trough both speakers and you are hearing the sound of stereo.
That's not true, you will be hearing a mono sound in both speakers, stereo is only provided when you use a stereo-coder, that turns your stereo sound into a mono sound but with the second channel in a higher range, together with a pilot-signal. Inside the stereo-radio it then will be turned back into left and right so you hear stereo.
it worked! but i have problems adjusting the frequency of the transmission. I can only transmit at 92.4 for some reason.
The most likely problem is that the trimmer capacitor is not connected properly
That’s pretty cool, and/but their are many ways to make your own FM/AM Radio Station though
Yes for sure, and this is one of the ways.
Awesome video! seriously touched by the song!!
This tutorial is beautiful. Continue in this way !
Add another battery to the same holes on the circuit board to increase distance to a predictable 60 meters
Why don't you try that and let us know how it goes.
great video!! even the melody is great!
Simple and efficient. Hats off to you man.
Solid electronic but that music it was worth it to put in
that is a good creation, congratulations and thank you so much by your contribution
hey lukas thank you very much ,thank you for helping me ,i done my fm ,, its really work ,,awesome brother
Thanks I am going to make it for my science exhibition
l very like the video.I come from China.
now make a china product
Good job I really liked it..
All the best, man
Nice video. Thanks for this tutorial :)
if you connect a signal amplifier to the antenna output, it may have a longer range
Thanks Lukas. your exposition was well organized. I enjoyed it. needless to say, it leaves no room for doubts.
Should've added a mic instead of an aux! Still a good one.
Thanks for the video . It was really helpful
Thanks. Next time pocket radio with speaker and display. Please
It's much harder than you think.
Thank you sir for making such good video
Amazing technique
I liked the video very much
But the video quality and idea is awesome
We can use any copper wire
Thank for sharing , I will make it before some day
Superb video
can I use 47uf, 63v instead of 100v and also 470uf, 16v instead of 25v
yes, you can use any voltage higher than 10v for the 47uf. Also there are no 470uf in this build, it's just two 47uf capacitors
I love the music 😍
Me too ☺️
Really sooo nice....& sooo interesting....fantastic...
Awesome video, thank you!
Oh, this looks cool! I need to make that.
*looks at parts*
nevermind.
I've been there.. But the parts are not that difficult to find.
I found all components in a old television and old radios and works perfectly to me. That only thing new was the copper breadboard and some resistors.
Very well done. High quality, clearly explained and good music. I will try to build one and let you know how it goes. Could you include the circuit diagram and schematic on the youtube description?
+Matthew McEwen Definitely, I posted a sharable link of the circuit & component layout in the description.
+Lukas Ekers pls help me sir I have made one FM transmitter with the help of you tutorial but the output audio is not that much clear , all the time there is buzzing bee like sound in the background of the song .... what should I do to rectify the buzzing bee sound
+Stories & Thoughts Of a BigbOy As I said practice tuning it better, and reduce the volume of your audio device, also consider picking an emptier frequency on the radio, play around see which frequency on the radio picks it up better may help too. you may have noticed that its a very simple transmitter so it needs delicate tuning. hope it helps!
I love it! :) I did this when I was 12 years old... (I literally grew up in an electronic factory)...
But air is the best insulator (both heat and electricity), candle wax has higher conductivity than air!... so do not use the candle wax thing! ;) just my 5 cents...
That is incorrect. Air is not the best insulator, electromagnet signals can travel through air but are obstructed by concrete and many other substances like wax.
@@LukasEkers You may be right on this since I never studied this particular field. But I know for a fact that leaning on a concrete wall feels colder (conducting heat) than air does to the skin. I may be wrong about this, but I cannot remember that electronics were buried in wax, but I do remember one particular use of silicon in solid form to the same effect, but that had to do with making the device more shock resistant (and probably also more waterproof at the same time).
Do you have any references?
daNorse I don’t think this has a huge effect if any. A professor advised me to put some wax on the connections as it has signal blocking properties. Though candle wax probably wasn’t the right one.
@@LukasEkers Seams a smart thing to do when you are concerned with wires getting loose and to prevent short-circuits. The device I was talking about was for use by divers underwater, and it had to be very physically strong -- and of course, water-proof -- tests were done down to 500 meters under sea level, otherwise it would not be approved. Electronics are so amazing -- even if it is super-sensitive and super-fragile -- still we make it work underwater, in space and even on the moon! :)
daNorse Definitely! But not quite my point. Radio signals tend to jump from the connection points on some of these components creating noise (the solder joints act like little antennas and there is no physical short circuit) wax was used to try and prevent those signals bouncing as it has radio signal blocking properties.
How to blast your fire mixtape at anyone that tunes in 😀👍🏻
Zach McCorry Yes!
Thanks now I'm will go make one and start my own radio station lol
Very nice Music. Great transmitter unfortunatly its illegal in Germany :(
Don't worry, I'm pretty sure you may build this! This concern was taken into consideration. If you want to use your own low power radio transmitter, the FCC guidelines require that the transmitter does no exceed 60meters and this transmitter only does about 30 meters (which is why I focused more on sound quality). I don't know about Germany or your region specifically, but I can tell you that you can safely use this as it is in the range of personal use (30 meters would basically cover your household). You will only get in trouble if you were to found your own pirate radio station and or transmit long range radio signals without a licence. Read this for more information: www.fcc.gov/media/radio/low-power-radio-general-information
it's not illegal in Germany if you stay below 50 nanowatts