Build your own FM transmitter with no special parts needed
ฝัง
- เผยแพร่เมื่อ 5 ม.ค. 2015
- See our 1 mile UHF transmitter at:
www.bug-transmitter.com
www.filedropper.com/pcbprint
Lets make a very simple 2 transistor FM transmitter
In this video i will show you how to make a
FM Transmitter that is very easy to build and get working.
See how i make a very simple circuit board.
Frequency: 93Mhz - 99Mhz
Current consumption: 13mA at 9v
Working Voltage: 3v - 12v ,more Voltage more transmission range !
Stability: Not bad
Transmission range: Antenna 165cm=
800ft+ , Penetrates through walls and ceilings.
RF Power: about 4.45mW RF output
PLEASE NOTE
The videos I make take a lot of time to film and edit ,I know I don't make many videos and that I will improve on in the future ,any donations are welcome to my PayPal account at: dazaro@blueyonder.co.uk
Thanks
Parts List:
R1 Resistor: 47k
R2 Resistor: 1M
R3 Resistor: 10k
R4 Resistor: 47k
R5 Resistor: 470R
C1 Capacitor: 100n
C2 Capacitor: 100n
C3 Capacitor: 1n
C4 Capacitor: 33pf
C5 Capacitor: 10pf
C6 Capacitor: 10pf
C7 Capacitor: 100n
C8 Capacitor: 33pf
Homemade PCB ,see video
10mm Microphone
2n3904 transistor x 2
Antenna wire: 165cm
L1 Coil 4 turn
PP3 battery clip - วิทยาศาสตร์และเทคโนโลยี
I just watched this again and not only do you show how to build it without any special parts but with the clips showing where your soldering one could actually learn how to read a electronic print (schematic) as well! wish I could have seen these when I first started out-sure would have made my life easier lol
The best DIY PCB I've ever seen. Thanks.
I can watch you for hours. Innovation, knowledge. Wow. Thanks again.
Help good afternoon my name is ABDULAZEEZ please what is the number transistor I am going to use sorry for my English
jlucasound you need to watch him for hours because for one easy video he needs around 30 minutes to one hour and more!
I built one, it worked perfectly.
I really admire your work.
Can u give me that
great vid...its a good way of getting into electronics and not being scared of pcb's keep this style of vid comin plz love these little projects
I've watched a bunch of your videos and they are all completely amazing and so very inspiring. I'm an amateur at DIY electronics, and I've never seen a board made like this. I can etch my own, but I think this way of making a board is very cool! thank very much you sir!
The Arab
Thanks for your nice words,happy you like my videos.
Another fun project Darren. Will enjoy building.
Thanks
Carl
sir this clip is pure gold.well done
That was awesome man i cant wait to try this, greetings from Norway!
I just love the soldering part of it most!! very interesting tutorial...
Great job keeping the spirit of DIY alive and thriving. This is the only video I have ever seen that gives an alternative to soldering. Thanks for sharing information. There are many who appreciate it. B
BRILLIANT idea for the PCB. thanks mate
Simply genius, thanks for sharing your video !
Not the most useful comment perhaps, but please can you make more of these videos? I both love the content and how you've made the videos, they are excellent! Of course, you probably have life on the other hand as well ;) But really, these videos are great and I really would love to see more! =)
dazaro3 This is a nice project. You have some excellent fabrication ideas. Thanks for sharing.
Excellent video ...innovative cct board.. all these components are common. The inductor/coil is home made the Ae is just a length of wire.
can you please make videos explaining the why not just the how , call it fm design course , just tell us why there is so many capacitors and stuff like that .
Just built this circuit today using all amd parts on a piece of proto-board. I didn't have any 2n3904 so I used BC817's. It worked quite well - better than i thought it would actually ☺
Edit: Forget to mention, I also only used 2 AAA batteries to power it and it still worked pretty good!
range?
Nice video presentation!
hello dazaro3,very good video. i will be building this transmitter.
Nice making.
Muito bom seu projeto, Bonito-MS Brasil !!
I created one like this worked perfectly...
thank you....
r u help me
thanx a lot for a very informative video
what a good idear, and it worked.!!!!!!!!! thanks
Nice video! thanks very much
Very impressed
Very Very thank you Sir ji for building FM 😊👌👆🙏
Will this work as a fm transmitter for an mp3 player? Mount a jack plug and wire instead of a microphone?
Hey daz, awesome! I'd like to build a boost converter to power the front end amplification stage, with a MOSFET or high power BJT transistor as the front end rf amplifier; with only a single 9V or 12V battery or even an electric bike battery... perhaps a daisy chain could be useful on the front end and the frequency may be altered within the VHF range to some non-interfering channel
nice job,dazaro3.
Why haven't you uploaded any video for a while?
Your videos are great. Keep it up man!
C'est très fort !
you inspire me
Ahahahha
That sounds like a lot of fun. Must make one! Thanks!
Thanks ..you good from baghdad iraq
Love your smplicity build. Can you build a split system receiver/transmitter linked above water and transmitter/receiver below water say 2m below water linked by a cable? Below the water you may need to increase the power or what ever its called.
Hey, thanks for the vids. Unfortunately haven't managed yet to get one working!
I think the weak point it my coil.
Can you use copper wire? I've also attempted to break apart the coils in a transformer, but no luck!
I've seen variable inductance Hollow coil inductors on alibaba , but am wondering what the inductance of the coil should be and whether it could be replaced even with standard solid inductors.
Thanks!
Very cool 😎👍🏿
If I were to use a 1/8 in jack and a capacitor to separate the dc, would it work well with any phone/mp3 player?
dazaro3 I built this one and it works great, thanks. I modified a small transistor radio so I can receive it outside the broadcast band around 80 MHz. In my case the signal has to go through 3 walls so the range is only 60 meters (~ 60 yards). How can I modify it so I get a little more power, can you recommend a high frequency transistor to replace the 2N3904? Or any other way to boost the signal, maybe an additional stage between the mic amp and the transmitter?
I Can't download the printable layout, broken link, could you re upload it please !!
Successful project, clean transmission of
How do i take the antenna hi freq signal and send it into a high power transistor to make it high power transmitter?
Hello congratulations, i like now how buid the check the power rf what you show in this video, thanks
im just getting into this stuff and was wondering about the Resistors, it says 47k but how many watts is it or does it matter?
you are amazing i am impress.
Fun, I started building my first circuits without any board, then I started to use thick cardboard as a base. But now I have couple square feets of copper clad board in stock practically everytime. It is fun, but when it comes to more complex circuits, wiring that will be pain in the butt
I've tried making two circuits so far but none of them work, I don't know what I'm missing but I think I need to understand how every component works in an fm transmitter, if you can make a video explaining the basic principle of how every component works in a fm transmitter, that'd be really amazing...
I have built a lot of transmitters a lot of different ways but this I have to say is one way I never thought of ! pretty cool good job- BTW (Xerox-fish) He is responding to many emails from people who want to know how to do this WITHOUT etching the boards who knows why (I don't) but at least he answered them most wouldn't take the time- I think its pretty smart move to be honest
Can you please tell me where the trim cap would be connected ? I'm guessing one to positive rail and I don't see where I would connect the other end. I'm a beginner. Any help much appreciated. Tia
On that circuit you are building could you use a BD131 or some RF pre-driver transistor, there are some 9v batteries that have 16x5 AAAA batteries.
hi mate, when buying capacitors, what voltage should they be? the higher the better is it? if some are higher than others in the circuit will that be a problem? as you can probably tell I haven't got much of a clue about this stuff. cheers pal
are you able to adjust the broadcasting frequency on this transmitter?
Make your own circuit boards or a kit ,I buy it ,I love the kit formats.just a thought ,because there aren't always enough interesting kits to by sometimes.
Im still waiting for more of your videos too
how do i connect the parts if i have a ready pcb from the shops?
nice project can we replace 2n3904 transistor what is the wire gauge and diameter for coil
I have made a three stage transmitter ultima fm bug i replaced the 2n3563 with a bf 199 but unfortunately its range is too low about 3feet. Sometimes i get a clear sound but as soon as i move away sound becomes too low.frequency of it is not stable.pls help.
hello, sir I always watch your videos and it changed my life, sir, if you can to make a video about the jammer it will very good and which type of frequency Generate it?!
This is a “VFO”which is unstable oscillator,so it's better to use "PLL" oscillator which is ...stable with wide frequency range
I made this model for a project of my university, and ir works perfectly, but se changed the transistor for one that is less noise
Exelent
This kind of oscillator is not critical and works with a wide kind of Transistor types even most af Types. So there is no explicit RF Type Transistor necessary. Just trying.
it is possible to set the FM frequency with a digital circuit such as
MCU, I mean digitally change the variables of LC parameters
Hi, great video. I just suscribed. Could you please send me the link to the RF metter used? It looks DIY, pretty neat. I searched your videos but I couldn't find it. Thanks
thank you.
wat does the cap between collector and emitter of the second transistor do?
what material u use to make the coil and where can i find the material.
Hi. Can I ask a resistor and a capacitor is one positive and one negative each side like a LED .if I hold a capacitor with the number facing me like it says 103 the left side and the right side witch one is positive. Not so shore about resistors. I been in to electronics since 1981 but I want to make some of these. Thanks
can i use a phone tobpick ip the frequency it outputs?
How could I connect a source of music such as a mobile phone? Directly to C2 or not
what value caps would be suitable for c4 and c8 if I didnt have 33pf could i use a 47nf or 22nf? Many thanks for this video, very interesting!
+John M
For most part the frequency is set by the tank circuit. Thats the 33pf capacitor and the inductor ,that the 5 turn coil.
You can only use a 30pf capacitor. Or 2 x 15pf in Parallel to make 30pf or 2 x 60pf in Series to make 30pf.
hello
do u think i can use this project for my final year project?
Hey Daz, great build! could you please put up another link to the PCB print? the current link is not working.
Thanks mate :D
Hiya, thanks for this wonderful tutorial it is very helpful.. and ive visited the links below and saw some very interesting stuffs a looking for.. Am in the Gambia West Africa IS IT POSSIBLE TO GET IT POSTED TO ME.. I WANT TO BY ITEM
شكر لك على هذا
Thank you for this video. Ill give this one a try. Question: Is electronics a hobby or is it your profession?
Basically, does an FM radio work based on PWM and average voltage?
Would you please tell me how to make fm transmitter from car fm mp3 device?
I don't speak english so good.Which kind of material is the wire you use for wiring all elements together.
I would appreciate you answer.
Please can you help me on how to buy 22pf trimmers... i need 2 of them
How much and how can i get them?
Can I replace microphone with jack input? And if yes, then how to do that?
please post a working link for the pcb template the one you have is not working.
hey dude can i use earphones mic
i seriouly adore your work
but u didnt use trimmer capacitors or similar stuffs like those
how can u adjust your frequency ....///??????????
Hello friend, i was trying to make your transmitter but i dont use a L1 coil 4 turn, i use transistor but the function like L1 coil 4 turn, and it didn't work. do you know what's the problem?? pleasee... this is for my exam
But how do u know EXACTLY how few and far between to make the holes to poke? Are the exact measurements on the schematics?
can we control its functions with added controls wirelessly
where can i find schematic of that fm transmitter???
And one more. There are two types of capasitors. For example 33pf *50v and 33pf*25v which one?
Hi can I use C945 Transistor for this build?
can i have the link for PCB layout? thank you... :) good video btw.
I can't get the pcb print, the url goes to the main screen and not yours.
where can i copy print the circuit board please
Hi,
I have a couple questions for the final project in college
My project is to build an digital remote transmiter for 4 receiver
Which have
500 to 1000 m range
Low frequency approx. 3 mhz
A 5 days of active recivers
And have dtmf (encription and decription)
Can you help me achive my goal ¿
WHAT I need to finish
How it work ¿
Can someone help me¿
Hi. Can you please reupload the link to the pcb layout?
which wire gauge used to make coil
Can anyone please tell what's the value of L1 Coil in henry?
im interested in buying those trimmer capacitor.
Hello sir. I think in the past you had posted a video of an FM transmitter with stereo preemphasis circuit. Can you repost it or simply reply to me where I can find the circuit diagram?
I can't find the frequency!
Please help me!
Can you pls post the schematics and the part list....?