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 

Question by modtrend 4 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:  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!

Topic by ericb1 8 years ago  |  last reply 7 years ago

FM Broadcasting Answered

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

Question by wenpherd 8 years ago  |  last reply 8 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!

Topic by XEFrontier05 11 years ago  |  last reply 11 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

Topic by 2illickans 3 years ago  |  last reply 3 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?

Topic by randofo 11 years ago  |  last reply 11 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.

Topic by youri 11 years ago  |  last reply 11 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.

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

FM Publishing and Instructables

Instructables has been invited to join Federated Media Publishing. To make this work, I need your help. Check out this short survey and the full post here.

Topic by ewilhelm 12 years ago

usb to fm transmitter

 Hi, I am a very big noob to wiring. For a present, I wanted to make my cheap old AAA powered fm transmitter into a usb powered one.  Thinking I was so smart, I cut up an old usb cord and soldered the red to positive and black to negative. It worked great until it started melting the transmitter.  So I now I realize that usb is much more powerful than 2 AAAs.  heh heh. I found this: but it's a bit over my head.  I'm assuming I need to get a capacitor or voltage divider but I could use a little help breaking it down into noob speak.  Plus the transmitter is a little thing, 2 inches, is there a smaller way of checking the voltage? K, thanks bye!

Topic by audrywolters 9 years ago  |  last reply 9 years ago

how to make easy fm transmitter?

Question by shreyas666 9 years ago  |  last reply 8 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.

Question by Rajkumar2506 2 years ago  |  last reply 2 years ago

how can i make fm transmitter antenna?

Question by ajoyt22 7 years ago  |  last reply 7 years 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.....

Question by manpreet singh 10 years ago  |  last reply 9 years ago

how to build a fm transmitter?

Question by asehgal1 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.

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

i want to make an FM antenna for my house

Question by lawmom2 7 years ago  |  last reply 7 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?

Question by cobito1060 4 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.

Question by Rajkumar2506 2 years ago  |  last reply 2 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

Question by pennsteve 8 years ago  |  last reply 8 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

Question by fine 9 years ago  |  last reply 4 years 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

Question by Atul009 6 years ago  |  last reply 6 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."

Topic by ewilhelm 10 years ago  |  last reply 10 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.

Question by gday85208 7 years ago  |  last reply 7 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.

Topic by thejrb 11 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 .

Question by achraf52 7 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.

Topic by kurdiz 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?

Question by tylervitale 7 years ago

FM Wireless Microphone receiver

About a year ago I got one end of an wireless microphone system at a yard sale. As far as I can tell, it is the sending unit. The recieving unit is lost to posterity, which is why it was so cheap, and has since been collecting dust. It has an RCA line in, 1/4 inch microphone in, a squelch knob, an output knob, a two-foot antenna, and a power button. It says it operates at 49.83MHz FM. I don't have a receiver that will pick up that frequency, and I'd like to know what it would take to build one. Perhaps mod an existing FM radio?

Topic by Rishnai 10 years ago  |  last reply 10 years ago

Fm transmiter coding help

I need a little help determining a code that is used to run a Fm transmitter program through a Fm module and the AVR Butterfly. Here is the original article of the transmitter but there is no code that went with it and I tried to look for the file online, but I was unable to find it. There is this code that's on AVR Freaks, however, I do not know if that is the code for the transmitter (and I do not know what the code is suppose to look like because I barely know programming). I have all the parts ready to build it, I just need to know the code to make it run. Any help would be appreciated.

Topic by KT Gadget 9 years ago  |  last reply 9 years ago

Amplify FM transmitter range?

Http://  This all relates to the picture linked to above I was not sure if I could put an amplifier before the antenna to boost the signal going to the antenna extending the range anyone know for sure it seems to make sense 

Question by Algag 8 years ago  |  last reply 7 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.

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

The FM is not operational, but the AM works?

Subaru car radio/cd player

Question by GingHeskett 5 years ago  |  last reply 5 years ago

How to build an FM transmitter? Answered

I want to start my own temporary radio channel. Well me and my friends plan to do it, so first we need a FM transmitter, so i was wondering if anyone of you could help me out. I am good at implementing circuits on PCBs and making circuits in general, so i dont think making one should be such a big problem, but the problem is i dont know how to make one, so needed help with that. If there is already an instructable please link me to it because i've not been able to find one.  Thanks! :)

Question by ankur2893 6 years ago  |  last reply 6 years ago

Improving Signal of FM Transmitter

I recently bought the C. Crane FM transmitter. I have not had much luck with it even after turning up the pot as described on the internet. However, I am not giving up yet. Below are some possible things that I have thought of to improve the sound quality of the radio at a distance from the transmitter. 1. run wire from the antenna of the FM transmitter to the ductwork in my house. I already tried this. I had better luck attaching the wire to the exterior of the ductwork in my basement rather than the interior of the ductwork. 2. create some sort of repeater(s) to get around walls. This device would have to be a receiver/transmitter. 3. create my own FM transmitter with the best parts that I can find. 4. Use a homeplug system. Your suggestions are much appreciated. I don't know a darn thing about electronics so if you have any recommendations for good books that would be nice.

Topic by sundet 12 years ago  |  last reply 12 years ago

120v FM radio question

Does anyone have any clue on how to build a normal radio that I can plug into my 120v wall jack and not have to use a earplug to listen? I would greatly appreciate it because i have always wanted to design and build my own radio but after scouring the internet i haven't come upon ANY knowledge...not even a manual. Please, anyone?

Topic by commercial free 12 years ago  |  last reply 12 years ago

FM Transmitter with voice recorder.

This is what I would like to have made. I see these in spy websites for cheap. I don't want to spy on anyone but need for for another reason. Can anyone here on this site point me in the right direction. It's a short range FM Transmitter that has a built in voice recorder for up to 4 minutes made. The recorder would have a simple button that you would press to record with a built-in mic and small speaker for playback. The recording when transmitting would loop forever. The unit would be powered by a small battery and solar panel or just solar panel if that would work both indoors and out. The unit would only have to transmit during daytime hours. I would need the FM Transmitter to transmit no more than 100 feet and to meet FCC for USA. The transmission would need to be a very clear transmission because it is going to be used for advertising. It does not need to be in stereo. I've attached an image of what I would like to have made and the case is available at Thanks Gregg

Question by greggsudduth 5 years ago  |  last reply 5 years ago

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

Question by Shadow94 9 years ago  |  last reply 7 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,, 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?????

Topic by HavocRC 4 years ago  |  last reply 4 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.

Question by jumper1111 6 years ago  |  last reply 6 years ago


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

Question by 9 years ago  |  last reply 9 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?

Question by nfarrow 9 years ago  |  last reply 9 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

Topic by Nevat 2 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

Question by wildman29 10 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?

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

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

The capacitor circled in red

Question by cccp3 3 years ago  |  last reply 3 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

Question by boiken 9 years ago  |  last reply 8 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?

Question by ariesamit01 7 years ago  |  last reply 7 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? 

Question by jagadeesh.rk 7 years ago  |  last reply 7 years ago