Mini FM Transmitter 100Mhz | Fixed Frequency No Coil Used
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- เผยแพร่เมื่อ 21 ก.ย. 2024
- Hi Friends, Today In This Video I Have Shown Mini FM Transmitter 100Mhz | Fixed Frequency No Coil Used
Circuit Diagram : techsawco.com
circuit : techsawco.com/...
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#walkietalkie #fmtransmitter
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Note* if you want to improve range just add More voltage like 12 Volts it Will Make the range go from 1x to 3x
Not that much bro, instead of using higher voltage we can use RF amplifier which we can make with only 3 component:
1 transistor,1 resistor and 1 inductor which can make the transmitting range longer and also increase the output power but dont raise the output put to much because the police will find you
It will burn the transistor and the resistor in series
@@visionofwellboyofficial oh, I forget the capacitor
@@HighVoltageArcs08rd you mean bypass capacitor?
@@visionofwellboyofficial the capacitor can block dc from the oscillator to the amplifier and only let ac go
After searching for a couple of days i finally found what I'am looking for. A simple way how to make a transmitter. I'm educating myself how to make my own transmitter in order to make a homemade RC control car, other channel makes complicated explaination on how to.
It won’t work
How is he able to generate a 100mhz signal from just 20mhz oscillator?
@@timeforlearningscience1217 He's using the 5th harmonic.
I have a question: as we know, quartz cristal oscillators don't permit a deep frequency shift (as the 75kHz ones, existing in commercial FM stations transmitions off), wich are possible by the LC oscillators applications only (whose frequencies are stabilized by a PLL synthesizer, that has a quartz cristal oscillator for reference); so, is this design of yours an amplitude modulation one, even tuned by a FM receiver, isn't it? And I think that this is too likely, just because your oscillator doesn't have a varicap diode for the modulation - by the way, is it (the audio) clear and deep on FM receiver's the speaker?
Now, I just have a suggestion: take off the RF signal (20MHz, whose fifth harmonic is that is being tuned by your FM receiver, in 100MHz, in this video), to the antenna, from the colector (first electrical terminal) of the transistor, in instead of the base (second one): if you do it, the RF sign will be stronger on the FM radio receivers near your small transmitter!
Thank's!
what?
Base use for transmission?
Some big brain stuffs😂
Love the sound of your radio amplifier, brand "SONEY" the one and onley!
How are you getting 100mhz from an oscillator vibrating at 20mhz? What's doing the multiplying times 5 to bump it up to 100mhz?
Is the antenna tuned specifically for 100mhz or is it bent to receive all FM radio frequencies?
Harmonics; the 5th.
@@mohammadalfauomey3443 what selects the 5th harmonic as opposed to the fundamental?
@@pratwurschtgulasch6662 Asking the same thing
@@pratwurschtgulasch6662 By selecting "suitable LC " .
There is no incductor in his circuit,so no L
Fantastic achievements with a handful of components. Spectacular!!! It works basically like the Jammer!!! I have long been looking for a simple schematic to annoy my neighbors ... . When they for example have a party, invite people and put their rock, pop, dance tracks .... loudly with this gadget I will be able to impose my music and put children's songs to make them die of rage. :) Let me know your point of view. Thank you very much. Bye.
Lol !i!i! would be fun but if you do that the authorities will triangulate your position , and you know the rest ....
@@sailingcapedissappointment2012 I wish I had a chance to contact the authorities . . It would all be easier if I had some useful technology. You know those movies, where there is an innocent person and he is falsely incriminated throughout the movie (but is that a "movie"? Fiction, but in real life it is a real nightmare that leads to death. That's the concept!!! He sees that it is NOT a fairy tale. Greetings.
@@pierpa_76pierpaoloIt' s only gonna be what you can make it .... timing is everything, and never defend a position, think outside the box ..
@@sailingcapedissappointment2012 Uhm ..........!!
Nice, but a few things don't add up!
Nelson is also called that in the commentary.
the modulation will be very very very soft!
Thanks it works just fine
Is the basic frequency 100MHz or at exactly 100MHz you hear a harmonic and the basic frequency is 20MHz?
Nice work sir.
adicionando um transistor mais potente em uma nova etapa, este transmissor ficaria muito melhor.. com alcance na ordem de 500 a 1500 metros ( _dependendo do transistor e sua correta polarização_ )
Já vou começar a projetar o meu . Só que vou usar uma etapa pre-amplificadora de audio de entrada , pois pelo que percebi no vídeo,, tem portadora porém o áudio está bem fraco. Em minha opinião falta uma pre-amplificação na entrada. E para a saída de rf eu pretendo usar algum BD*
:o)
you are correct Sir.. if i want to use mic the need pre amp also..have ypu built your project?
e como faria para transmitir em 12mhz?
@@silvioadrianoweiss4499 12mhz ? Pq 12mhz se estamos falando da faixa de fm comercial?
A faixa de fm comercial vai de 88 a 108mhz
Does this works?? I wanna make a telegraph. Can I usee a push button instead of audio cable??? Please reply asap
How do I do it with a simple on/off switch? What do I add instead of a microphone?
Hey bro i am using 12+ volts and a good antenna but it is not the range I wanted it to can you prefer me any change in circuit that i could boost range and i am also using amplifier to send 📶 signals in good clearity reply me asap
DO YOU HAVE ANY PROJECT THAT IS OF 3 TRANSISTORS, FOR RADIO FM TRANSMITTER? THANK YOU
Nice bro good work
Excellent Circuit
I would like to know how I can lower the oscillation frequency of this circuit. For example: I am using a 27Mhz oscillator crystal, I want to download to another frequency that is empty in the fm range. Could you tell me how I do this?
Parabéns pelo seu grande trabalho
Great video! Could this be built for 300mhz? I am looking to build a 300mhz shortwave transmitter. Any ideas?
🤦♀
Can you explain how this works? The path that the energy is taking? How is it 100MHz if the crystal is 20MHz?
What Is the purpouse of the capacitor in this circuit?
How are the input frequency and the crystal's frequency modulated together?
in the video he used a 100mhz crsytal not 20 mhz people are getting it wrong
20MHz has a harmonic
The reason why they use 20 MHz crystal because unlike the LC oscillator the crystal oscillator using mechanical oscillation which can create many others frequency harmonic which means you can use 25 MHz crystal instead of using 20 MHz crystal
Nice project. Can I replace bc547 with 2n2222a or 2n3904?
Generally speaking yes. It will be equally and garbage
Yess
Range? And if I can put an electret microphone
WHAT IF I USE 16mhz Crystal oscillator -...IT WILL WORK ?
bro, how do i transmit voice signals with mic? and when will you make fixed frequency receiver
Nice
What is the "RF POWER" of it in (mWatts) .
Thanks
5 mW
hi...how can I change the signal transmission frequency?
This design works well for educational purposes but the signal is too weak to use it for anything else. I got max. 10m range out of it. Not even enough to bother your neighbors but it works to impress your friends and kids. Can you create one with about 5 watts of power?
İyi günler 27 mhz kristal kullanıyorum istenilen frekansa çıkmıyor frekans metreyle yakından ölçtüğümde 27 mhz sinyal alıyorum neden olur
Just love it 😊😊
Bro... super....nice 👍
I have a question , u used 20mhz crystal oscillator then how to produce 100mhz transmit signal ?
20 mhz is the fundamental frequency, first harmonic is 40 mhz, (20 X 2 =40, 20 X 3=60, 20 X 4=80 and 20 X 5= 100mhz) 4th harmonic. If more powerful, it would need some output filters to suppress those harmonics.
@David A Loving so i need to use 4 oscillator for get those frequency?
@@4fifz416 One oscillator. Google rf harmonics. Square waves can produce more harmonics, so I am told, than a nice sine wave. The goal is to make an oscillator that produces a nice looking (on scope) sine wave. Less distortion. One great experiment is to build a circuit (function generator) that makes a triangle, square and sine waves. 8038 chip or LM324 can do it. Now, send those wave forms, one at a time to a 386 audio amp. You will hear the difference. A good sine wave will have a pleasant tone, almost bell like or musical instrument, at low frequencies. The square wave will not.
@@DavidALovingMPF102 so i need to make square waveform generator or triangle?
@@4fifz416 No, you don't HAVE TO, but a function generator is a great tool to have on your electronic bench. What do you really want out of all this? an FM music transmitter?
Good information
hola con que voltage trabaja y que alcanse tiene la señal
clean staic up
Can u make a simple fm receiver circuit using simple parts like this as u have used??
Please, I need this too! 🙏
kuch der pehle banaya ye circuit kam kar rha hai magar jab bhi main 2ft dur jaata hoon signal nahi milta.... range 2ft tak hai
All done but sound not coming
Very nice brother, It will be helpful for other project. I don't want to use as AM transmitter. All I need is 100 MHz oscillator. Thank you so much.
What if i chage the capacitor and the middle resistor
And how about the receiver circuit?
Brother share the circuit diagram. Your link is not working which is given in description
Please solve not sound problem in this circuit
Dose this work with a car radio?
Bluetooth earphones can be heard?
I get a different frequency at 100mhz, this circuit does not work
nice
Nice circuit!
Sir can it be powered with cellphone Jack port
Powered, not with this design but generally speaking yes there is a way
Sooper bro 🔥🔥
Why it is dead stable?
if the oscilliator frequency is 20mghz then how is the end frequency 100mhz
Yaa i also have the same question
The reason is the circuit create a distorted waveform that has higher many frequency harmonics
@@HighVoltageArcs08rd so its magic
circuit diagram link is NOT working...(((
Das kann in🇩🇪ins Auge gehen,falls das Teil stört oder Oberwellen in anderen Bändern hat🐒😂😂😂👻🚦
thanks
How far radiation.....
can you explain its working it would be great cz without it look so fake.
Amazing
In a crystal fm mic can i use 47pf instead of 68 pf capacitor value due to non availability of the value also crystal of 27 mhz in place of 20mhz
Pls tell me use condenser mic instead of jack and also tell me range
Nice
That really works
chia muito, mas pelo simplificado que é, porh.
Sir can I replace the AUX cable with mic 🎤??
Need simple change
هل يوجد طريقة أوصل فيه 16MHZبدل 20MHZ أو لا
Can I use 60pf capacitor
what ever helps the circuit oscillate.
ofcorse its your tube
ما وظيفة مقاومة 47
K
Can i use a mic in the place of audio jack
You can use..
How a 20 mhz crystal oscillator can produce 100 mhz 🙆♂️🙆♂️🙆♂️
rf harmonics. i think the capacitor make the perfect harmonic.
Can i use 16Mhz crystal oscillator?
yup
@@johnmichaeldelosreyes7199 thanks
yes you make it work tru edit
mast
Soney 😄👍
Cool bro 😎😎
Range Kitna mileaga from this
How can we change the frequency
try a different crystal. Not all crystals operate easily on the listed frequency on the crystal.
@SWARNA JUGER GAAN maybe, it's 4th harmonic is 96 mhz.
كم volet يعمل
Noisy circuit
А ПОПРОБУЙТЕ ПРОМОДУЛИРОВАТЬ НЕ ЗВУКОМ, А ВИДЕО СИГНАЛОМ.
Still need coil to filter the noise
distance of this circuit
👍
How to make antinna
if i use 16 MHz xtal will it operate at 80MHz? because 20MHz xtal operate at 100MHz is it right or not?
Yes
There will be a harmonic there
it did not work for me
Try using same components 💯 work
@@Techsaw thanks
@@Techsaw check my You Tube channel is in Greek language but I also make various electric gadgets
> Soney
Make areceiver dy use this thim
Like
А на каком расстоянии действует?
Перевода нету на русский,зачем нам такой канал?
@@ЮрийШаталов-у9д
Пусть будет может пригодится
Low deep modulation
Can I use 27.000 crystal
Then you would have to receive at 27, 54, 81, 108MHz... etc
Basically any positive integer multiple of the crystal value
@@wqatch wat of 16.00 or 12.00
Turkish altyazi
how to change mhz
Change oscillator
How range this work
👍