how to make easy fm transmitter?

Asked by shreyas666 8 years ago | last reply 7 years ago


how can i make fm transmitter antenna?

Asked by ajoyt22 6 years ago | last reply 6 years ago


Is Arduino can do FM modulation? Answered

Is Arduino can do FM modulation without any additional peripherals.Simply an Higher AC frequency signal with antenna can propagate in air. My question is,can we do FM modulation in Arduino only by coding it,without using any additional peripherals.Generating the carrier frequency in Arduino by coding it and then by performing FM modulation by coding it,getting the external audio signal through Analog input pins and after all the modulation process, connecting a long wire on the digital pin of arduino because the square wave is going to be used as carrier signal.A simple wire can act as a Antenna.Is the above explained process is possible in Arduino only by programming it.

Asked by Rajkumar2506 1 year ago | last reply 1 year ago


what is the inductance of a coil which is 3mm in diam having 5 turns? Answered

I'm testing FM transmitter using multisim software.I don't know the value of the inductor to be used in the oscillator ( the oscill. has a variable cap.).I got this ckt. from a site, it is mentioned that the coil should be about 3mm in diameter and 5 turns. The wire is tinned copper wire, 0.61 mm in diameter.Since I'm testing it using multisim so i need a specific value.anyone knows it PLZ... let me know........THANKS.....

Asked by manpreet singh 9 years ago | last reply 9 years ago


how to build a fm transmitter?

Asked by asehgal1 7 years ago | last reply 7 years ago


i want to make an FM antenna for my house

Asked by lawmom2 7 years ago | last reply 7 years ago


car stereo sw1 to fm?

 I have sony cdx-v6800 car stereo i am trying turn radio but it shows sw1 and channels until 7524 but i need fm 88-108 can anyone please help how to SW1 into FM.

Asked by manmeetcheema 4 years ago | last reply 4 years ago


how i can make a circuit of FM transmitter in range of 5 Km.?

PLZ help me to make a FM Transmitter in the range of 5 Km. with a easy way

Asked by fine 8 years ago | last reply 4 years ago



how to trensfer a fm scan radio to static?

I have a HO700 SENTRY and i would like to make it to play 1 channel only. can somebody help me?

Asked by cobito1060 3 years ago


How can I hook up this capacitor for an FM transmitter? Answered

In the attached photos, I have the schematic for an FM transmitter.  I pulled a trimmer out of a shower FM/AM radio.  It has six leads.  In the photo you can only see five of the leads.  The sixth one is on the other side and is shorter.  I'm pretty sure that one was for the AM.  Can anyone tell me how I would connect this?  The one in the schematic has only 2 leads to connect. Thanks

Asked by pennsteve 8 years ago | last reply 8 years ago


fm transmitter

Most mosques in  durban , south africa transmit live trasmissions using fm transmitter. the previous transmitter was independent with its own pick up microphone. only needed to switch on transmitter and you could hear the talks on the fm receiver. most programs dont require use of amplifier . we updated and now the  new transmitter is connected to amplifier which is compulsory to switch on if you need to transmit . it is also a flat sound whereas the old trasmitter picked up a good echo sound. is there any device that the transmitter can be plugged into instead of the amplifier that has a pick up microphone.  thanks mahomed 

Asked by modtrend 3 years ago


FM Transmitter

My wife has a real small FM transmitter that snaps on to her iPod and streams her music in stereo to her car speakers.  I only have the iPod nano which only has a headphone jack, it doesn't have the standard iPod connector. I was looking to see if there's an easy instructable that can make a nice sounding FM stereo transmitter.  The only thing I could find was this one: http://makeprojects.com/Project/Micro-FM-Transmitter/721/1  and I'm not sure it's transmits in stereo.  Pretty sure the one my wife has doesn't use the coil method either. Anyway, is there something else that I can be pointed to as a starting point?  I was thinking of maybe sticking the whole thing into a small altoids box and I can use it in my car.  I didn't know if that project is the only real one out there. any help is greatly appreciated, thanks!

Posted by ericb1 7 years ago | last reply 7 years ago


How to eliminate noise in FM transmitter? Answered

I had made a FM transmitter using IC NE555. When i power the circuit with 9V battery,the transmitted audio is clearly received in my radio receiver.The problem is the battery will soon drain out and also as the battery starts to drain the transmitted frequency changes without my knowledge.So as the battery voltage decreases the frequency is also changing.To eliminate this problem i used transformer powered source with 9V Regulator 7809.When i power the circuit with transformer the received audio signal on my radio receiver has so much of noise added.The audio quality which i transmitted is completely lost.Anyone Help me to resolve this problem.

Asked by Rajkumar2506 1 year ago | last reply 1 year ago


Help me selecting antenna for my fm transmitter????

I am building fm transmitter i am finished with every thing in circuit leaving antenna i searched for d.i.y. antennas but there were many confusing names of antennas i dont want to go through all those defination, uses ,advantages etc. of those antennas so please help me choose. I am adding a image of my circuit please help me choose from dipole, 1/4 wave ground etc. antennas. It will be nice if u tell me any d.i.y. to make your suggested antenna. Remember i want my transmitter to work from 88-108 Mhz

Asked by Atul009 5 years ago | last reply 5 years ago


Education in 2008

This is a video I did as part of an advertising campaign for Education in '08, which is running on Instructables in the few weeks left before the election. You might have seen the video and ad running here, but if not, here it is. They simply asked me to "talk about education."

Posted by ewilhelm 10 years ago | last reply 10 years ago


FM Broadcasting Answered

What is the max power voltage for FM broadcasting without a license

Asked by wenpherd 8 years ago | last reply 8 years ago


FM transmission in Canada

Anyone know what Canadian FM transmission laws are like? How powerful of a transmitter can one use? On what stations can one broadcast? Are there any other things that are important to keep in mind up there?

Posted by randofo 11 years ago | last reply 11 years ago


Why cant I make FM transmitters?

So I am very angry at this point. I've made over a dozen FM transmitters and they NEVER work.  The list includes http://makezine.com/projects/super-simple-fm-transmitter/, http://www.buildcircuit.com/simple-steps-for-making-fm-transmitter/, https://www.instructables.com/id/The-Ultimate-FM-Transmitter/. These are just a few. I use all the right parts and I make all the right coils just like they say. What is wrong with me or my circuits?????

Posted by HavocRC 3 years ago | last reply 3 years ago


FM radio antennas

Are there any ideas out there for building an FM antenna booster that can be used with the usual whip antenna that comes built into most radios these days. Most of the radios are made in such a way that it is difficult to get at the internal wiring, so the booster would have to be an external unit.

Posted by youri 10 years ago | last reply 10 years ago


How do I transmit over all FM stations in my house?

I know that I can transmit a FM station 50 feet without having any problem with laws (at lest what I have been told). But how can I transmit over all stations in that field?

Asked by nfarrow 9 years ago | last reply 9 years ago


FM Transmitter ideas

Hey guys i recently bought a maccally fm cup at walmart. it was on clearance for $7.50 so i got 2 incase i ever needed some spare parts on the cheap. so now i have this extra FM transmitter, and i would like some ideas as to what i could do with it. The best i have come up with so far is putting the whole thing in something else (like a project box) because my cupholder is not the best location for my ipod.

Posted by aaronx 10 years ago | last reply 7 years ago


Basic outdoor fm antennae? Answered

I need to make a basic fm antennae for my reciever inside my mancave,  It's a steel shed converted and inside reception drives me crazy.  I do have basic poles and some wire types in my arsenal.  Someone PLEASE HELP.  I need my music to keep my sanity if you can relate.

Asked by gday85208 6 years ago | last reply 6 years ago


How to make a fm transmitter without amplifier? Answered

I want to build a fm transmitter with 400m range. I already have a custom made amplifier all I need to know is how to transmitt the signals.  I don't need a mic I will play it through mp3 player. plaese help me and give me a circuit. sorry for my bad english.

Asked by jumper1111 5 years ago | last reply 5 years ago


Boosting Fm transmitter range

I bought a FM transmitter for an ipod. I would like to boost the range of the device. (I know it is illegal but would like to get more range than 2 feet.) I think I need to build an external antenna but need to know where to hook it up to the thing. The transmitter I have is a ge FM transmitter for ipod.If anyone has done anything like this or have any useful links it would be great. I don't know anything about circuit making so help would be great on that as well.

Posted by thejrb 10 years ago | last reply 2 years ago


belkin tuncast universal fm transmitter - mine is different frm the ones shown unsure of solder point?

I cant really find the c 38 resistor the one im finding at the end of the red ant wire is the IR2j do i solder on the transmitter side? sorry cant get a pic on here yet

Asked by wildman29 9 years ago


MY CAR FM MODULATOR ONLY PLAYS 2 SONGS?

Connection and tuning in is no problem, but when I connect flash drive or card both have many songs on, all in mp3 format it still only plays 2 songs. It hasn't always done this, it worked perfectly well at first. Thanx if you can help. roy

Asked by 9 years ago | last reply 9 years ago


Does anyone know how to make a radio constantly scan? Answered

I want to take an ordinary FM radio and make the scan function cycle through all of the frequencies very quickly and constantly. Any advice?

Asked by transistorguy 8 years ago | last reply 6 years ago


Wireless FM microphone real time voice/play transmitter

Hello I am looking to buy/build a small FM wireless transmitter with built in microphone (similar to karaoke but not exactly ) to transfer voice or sound  from playing  musical instrument  to earphone. It is meant only for practice purpose so does not need  high power, the distance between the microphone (the transmitter ) to earphone  is like from mouth to ear a few centimeters say about  50 cm. I am electronic junior engineer and have knowledge and experience in electronics mechanics and wave buy. Before trying to develop a new product  I was looking for a readymade shelf product. The first way I have searched the internet and reached manufacturer of Bluetooth solutions because of the plenty of Bluetooth earphone that are on the market, but quit a short time after I got some answers from the the Techs engineers  of the manufacturers that Bluetooth will not be my solution because It was not originally designed for true real time transmitting. The main problem is the latency time because there is a delay between the voice or play start until I hear it in the earphone there is improved in Bluetooth 4.1 and 4.2 that is 38 MS and may be not enough while fast playing, So as I was advised I started looking in the RF FM area. FM transmitters are long time in the market of stages and performers, there are high power grate quality transmitters that cost hundreds of dollars. Here is the summary of what I need :        I will need the smallest device (PCB) can be like FM spy bug transmitter. built in microphone (on the PCB ) , built in battery compartment (on the PCB ),built in antenna a copper loop on the PCB (no wire) Since there may be some problems like saturation of microphone or other problems with band width or  sound and sensitivity, sensitivity and control for the Microphone is important. Easy calibration of  tuning and stability , may be digital tuning is better. One option is to use the standard of radio FM 88-108 , but it possible that I can use FM VHF or UHF system that have both transmitter and receiver . If there are no ready made products thatn I can easy build a kit , or from schematic diagrams I will be thank full if you have any ideas. Nevat Ben Haim Recomp Computers

Posted by Nevat 1 year ago | last reply 1 year ago


Is it possible to turn a spy ear into an fm room bug?

Asked by Shadow94 9 years ago | last reply 7 years ago


I can't find this capacitor. What do I do? Answered

The capacitor circled in red

Asked by cccp3 2 years ago | last reply 2 years ago


DIY radio tracking system?

I need to track my dog, and i would like to do it with a radio tracking system, but since im a DIY guy i dont care to buy it, (only to examin it if necessary ;)) and i would like it to have a needle indicator, is that possible? have used the last motnh searching the net for at tips and inspiration for the tracking system. Sebastian

Asked by boiken 8 years ago | last reply 7 years ago


FM Transmitter

Does anyone know if there is a way to make a FM Transmitter instead of buying one? Any help will be greatly appreciated!

Posted by XEFrontier05 11 years ago | last reply 11 years ago


How can I sort of INCREASE the RANGE (power to get signal indoors) of my FM radio?

Though I purchased my FM radio in a Metro (where FM signals are quite strong), now I am living in an sub-urben are and so unable to recieve good signals. Is there a way out?

Asked by ariesamit01 7 years ago | last reply 7 years ago


FM transister

How to build an fm transister on an breadboard. I am a class 7 student . and science exhibition is near pls help me

Posted by 2illickans 3 years ago | last reply 3 years ago


Which is the FM transmitter antenna ? Answered

When I wanted to expand my FM transmitter broadcast range I found a White and Red and Black wires please specify me which is the antenna one .

Asked by achraf52 7 years ago | last reply 6 years ago


how the FM station to convert audio into frequency?

How audio in FM station to convert in audio to frequency & how can it transmit in to transmitter? 

Asked by jagadeesh.rk 6 years ago | last reply 6 years ago


FM Transmitter mod help

Does anybody have any idea how to modify a car FM transmitter for an mp3 player so that it will transmit in frequencies other than the low and high extremes built into it? Also would it somehow be possible to make it transmit to all FM frequencies at the same time? If someone could help me out with this I would really appreciate it.

Posted by kurdiz 10 years ago | last reply 10 years ago


schematic for fm radio jammer?

Need to build low power small fm jammer any just a schematic would do i can get parts and put together.

Asked by 5bob 7 years ago | last reply 5 years ago


Hearing a dialup connection on a FM car radio?

My mum was driving to uni and we hear a dial-up connection over the radio twice or three times, on 103.50 FM to be exact. A little while ago i rang my mum and she was in the same place and suddenly the phone goes silent and it starts making all different tones. What's happening? What's causing it? Why's it on the FM band

Posted by thermoelectric 10 years ago | last reply 10 years ago


Radio

Hey, I really need a circuit schematic for a simple low power (under 3.5V) FM radio using the TA2003P IC.

Posted by Unknown... 9 years ago | last reply 9 years ago


How can I improve the antenna of my FM modulator? Answered

I have a car (2003 Mitsubishi Galant) with the radio antenna embedded in the rear window.  I want to add an antenna to my FM modulator to improve the signal quality.  How can I determine the best antenna length and placement? I already have information on how to mod the device. It's a Soundfeeder SF100. And yes, this will become an Instructable eventually.  :-)

Asked by yoyology 8 years ago | last reply 7 years ago


Is it possible to convert a radio into a radio broadcaster?

I want to build an ipod fm thing for my car and i can imagine this would be useful

Asked by quellek2 8 years ago | last reply 8 years ago


How can I improve the reception of my fm clock radio. Answered

How can I improve the reception of my fm clock radio? I can't turn it around or I can't see the clock. My bed only fits one way, so let's say it's stuck where it is. It was fine in my old apartment, in the new one I only get static. Short of buying one of those round antennas, what could I DIY?

Asked by EaglesNest 9 years ago | last reply 3 years ago


Can anyone help me build a FM or AM transmitter and receiver?

I found on the www many schematics but not togheter. I want to be a good and a stereo transmitter and receiver. Can anyone help me with a schematics for the both? I need with easy to find and cheap components, because i dont have many money, thats why i want to make and not to buy.

Asked by danyelo 4 years ago | last reply 4 years ago


How do I replace a mic with an aux input? Answered

I just bought a small Fm transmitter kit that doesn't come with an aux input. Is there an easy way to replace the mic with an aux input or an aux wire? Thanks a lot!

Asked by DELETED_DELETED_DELETED_16nato 5 years ago | last reply 3 years ago


FM Transmitter: Please help decode diagram/power properly (Mandarin or Catonese would be helpful)

I just need to figure out how to power this thing! Notice the positive marks in both upper corners, the negative in both lower? The large circle is the microphone, which is fully wired. The smaller circle is the frequency modulation, which is all set as well. The underside only has holes where the gray squares are and is otherwise clean (exception being one spot where the two mounting prongs of the microphone pushed through.) Thanks

Posted by owhy 4 years ago | last reply 4 years ago


Will the Waves ever Die?

Think about it, the age is the Digital Dawn of the day, anologue Television is already being planned to me completely removed from the air waves in 2009 to make way for the "supposedly" DIGITAL SUPURIOUR HD crap. I don't watch that much TV to begin with so it doesn't bother me. But what about FM radio, is that ever going to die? Chances are probably not for a few years, seeing how the AM spectrum is still kicking around. How long can our traditional ways last? I'd be fairly sad to see FM leave the game. Really, we've had radio since the dawn of the technical age, from the 40's through the 80's (remember the days?). I just wanna see what anyone else has to say.

Posted by Punkguyta 10 years ago | last reply 10 years ago


Hooking up an FM antenna?

I recently got a new power amplifier/tuner from my dad's buddy. On the back, where you hook up the antennas, there are 4 terminals: 2 for FM and 2 For AM. One on the AM side is for the antenna, and the other is ground. This make sense to me, because an AM loop antenna has two wires which need to be hooked up. On the FM side though, it also has a terminal for ground... From what I understand, FM antennas are composed of a single "wire", like those coming out of radios or the ones on cars. What's the ground on the FM side for?

Asked by tylervitale 6 years ago


How to start a High School Radio Station?

With some friends at high school we have started a radio club. We are currently just streaming over the internet. I'm interested to know how complicated it actually is to broadcast over the FM radio. I know its possibly to receive a low power broadcast much easier but I still don't know how expensive that would be and difficult to acquire. I'm sure its a bit out of reach but i do know other high schools broadcast.

Asked by zigzagchris 5 years ago | last reply 5 years ago