BEST ANDROID FM TRANSMITTER APPS

People from all over the world are using their smartphones to control their home appliances remotely from a distance their smartphones have become a portable remote controller for many things. "Quick FM transmitter" is an FM transmitter application for android devices.

It is a portable apps for android smartphone's now people can enjoy listening to their radio through this application. It is only compatible with ISO1, ISO3, ISO5 and for the other's this application does not work. This FM transmitter does not work on airplane mode.

"Tune link auto" is also similar to the above application is created for the purpose to provide Hi-fi sound quality in your car it is the most advanced application yet and is required a Bluetooth connection between your car and the android device to get access to the car's sound system so your experience of using a FM transmitter gets better.




Followed by other apps "Car home ultra" is also a best suitable apps it is easy to use and  much safer so finally the android user's got a real car dock application for android. It's very popular application nowadays for android friendly users, although this software is already installed by default in many Mobile phone.

Best Features of Android FM app

There are numerous features, depends on what you selected app of android? Make sure about your mobile compatibility, some app isn't compatible for it so before installation make sure about it.

• Smoothly Sound System
• Portable to all devices (90%)
• Easy to Use
• Entertaining 

The three applications are the best FM transmitter's in the whole android market. So, hopefully the user's will enjoy using these applications. AndroidMeteor team is here for providing solution for updating, rooting and entertaining apps.

Tiny transmitter

I think I may have discovered one of the best kept secrets in radio. I have been thinking, off and on, about how to make a very low power 2m FM transmitter in order to get weather data into my APRS system wirelessly. A circuit using the Motorola MC2833P chip is quite easy to build, and I even have one in my parts box, but a custom crystal to multiply up to 144.800MHz would cost about £25 to be made which just isn't worth it.

One day I was browsing looking at various APRS articles and came across a tracker someone had built using a VHF transmitter module from Radiometrix. I had come across this site before but thought that a) these modules were only for transmitting digital data not the AFSK that we use, b) they were not manufactured for amateur frequencies and c) they were not available in one-off quantities for individual private purchasers. I submitted an enquiry, stating that I was interested in purchasing one TX1 low power (10mW) module on 144.800MHz if the price was within my amateur budget, and was amazed to be informed that they would be happy to offer the module for £13.00 plus carriage and VAT, with a lead time of five days. In total it came to not much more than £20 which is amazing considering many professional electronics suppliers specify a minimum order value greater than that.

The picture of the module is much larger than it actually is - the pins are the standard 0.1in spacing. As I am nowhere near actually needing to use it at the moment, I hooked it up on the breadboard to give it a quick test. The module does indeed accept an audio input: as described in the data sheet you should bias the input pin and then feed it with audio at a couple of volts amplitude via a blocking capacitor. I lashed it up to my FoxTrak APRS tracker and a braaap was received and decoded by my 2m APRS gateway which was enough of a test to be going on with.

There are several other products with interesting ham radio applications on the Radiometrix website. The HX1 is a high power (300mW) version of the module I bought. With the addition of a PA I could turn my FoxTrak into a standalone tracker. Even by itself it would probably have quite a decent range from the fell tops. Also of interest is the SHX1 which is described as "a small multi-channel 25kHz narrow band VHF transceiver with up to 500mW RF power output, usable for 144MHz band amateur applications." I think you could build a little hand-held transceiver with one of these, just for fun.

Many of these products aren't in the online shop so you can't find out the price or buy online, which is probably just as well as I could see myself ordering some more of these toys for something to play with over Christmas. I would certainly be interested to hear from anyone who has used, plans to use or has some ideas for using any of these little radio modules from Radiometrix.

Sony Ericsson MMR-70 transmitter LED mod for Raspberri Pi

My Raspberry Pi based Internet Radio/Weather Station is going to get a new feature soon - an FM transmitter. You can buy a discontinued Sony Ericsson MMR-70 FM Transmitter for less than 2 EUR now and it can be connected to Raspberry Pi quite easily. Tobias Mädel has done excellent work putting together a small FMBerry daemon which can control MMR-70 connected to RPi's I2C bus. In this case Raspberri Pi is connected directly to I2C pins on Alps TSMZ1-603A FM transmitter (built on NS741 low power FM transmitter chip). Onboard Atmega 32-M is not used and forced to a sleep state to avoid any control conflicts.

MMR-70 has an LED, but it's connected to Mega32 pin 16, so a bit of high precision soldering is required :) To control the LED we need to solder wire directly to the LED or close to Mega32 pin 16:

Using high temperature isolation tape you can mask the control point close to pin 16 and then easily solder a wire to it.
As usual, to protect RPi GPIO, a transistor is used as a buffer to power on the LED:

Now we can flash he LED every other RDS refresh cycle (one cycle - 80 RDS frames):

This is how it looks with a logic analyser:

Channel A - LED flashing, Channel B - RDS interrupts requesting next frame to be transmitted. So it takes 0.5 ms to process a frame request, then MMR-70 transmits this frame ~21.5 ms.

Links:
FMBerry on GitHub
MMR-70 discussion on www.mikrocontroller.net 

Note: even without the LED lit up MMR-70 could take up to 27mA, which is a half of recommended RPi's load for 3.3V supply. With the LED turned on consumption rises to 36mA, so make sure you are not overloading your RPi if you have other devices connected to 3.3V. For my radio I'm going to solder TS2950-33 voltage regulator to MMR-70 testpoints to be able to use RPi 5V supply and connect MMR-70 to I2C bus 0 on P5 so it will not directly connect to RPI's 3.3V.

Single Transistor FM Transmitter

I've been following along with Mark VandeWettering, K6HX, this week playing with Tetsuo Kogawa’s 1 transistor FM transmitter, and I figured I'd post my results too, after watching Mark have so much fun with it as well [1][2][3].

Video:


I did make countless adjustments to the original circuit, since I had almost none of the exact value components called for, but picked ones that were pretty close, which might explain why mine doesn't work all that great.  Like Mark, I used a more common transistor (2N2222, he used its smaller brother 2N3904).  Everything else was little better than within 50%, so the fact that it works at all is pretty amazing.  I really need to refresh my capacitor kit...

In the video, I mentioned that I actually got much better performance when it was still in a breadboard.  I had shrugged this off as some stray capacitance doing the circuit good, but it turns out that it was mostly because my feedback capacitor happened to be laying on the ground plane, which was what was hurting the stability of the circuit.  Bending the 15pF capacitor back up means it's about as stable as Mark's ugly build now, only with rather poor bass response.

I'm running the circuit on 12V, and it's drawing about 8.9mA, which is comforting, because I don't want it putting out any more power than I have to to play with.  I'm not even entirely convinced its transmitting in the 100MHz range; it could very well be transmitting in an entirely different band below 100MHz and I'm just picking up some harmonic.

Simple Fm Transmitter Circuit Diagram

simple fm transmitter circuit diagram

Most simple FM transmitter circuit diagram Gallery of Electronic Circuits and projects, providing lot of DIY circuit diagrams, Robotics & Microcontroller Projects This article gives the FM transmitter circuit schematics with necessary explanation. The main component used here is the VMR6512 IC which is a highly integrated FM A list of FM transmitter circuits with schematic diagrams for hobby and project purposes.Includes short and long range, simple and easy transmitters.Two transistor FM transmitter. Description. A lot of FM transmitter circuits have been already published here. This just another one, a simple two transistor FM This is a simple FM transmitter circuit schematic diagram with a single transistor S9014This is a circuit diagram of FM microphone speak in microphone and hear your voice on FM receiver. The circuit contains microphone preamp for increasing the signal of This is a simple wireless FM transmitter circuit which uses RF communication to transmit the medium or low power FM signal. Its maximum range is 2 km.This is a small tv transmitter circuit wich trasmittes in VHF, negative sound modulation and PAL video modulation. It is suitable in countries where the B and G Infrared transmitter and receiver circuit shown in the schematic diagram below can be used as remote control. The transmitter is basically an oscillatorFM transmitters can be complicated, but this iPod FM Transmitter is about the easiest you can possibly make.

Build a FM radio transmitter

This is a guide to becoming a techno rebel: a guide to becoming a radio pirate and raiding the silent airwaves with your own content. This is a follow up to my recent call for relaxing the grip on radio broadcasting in the Maldives.

One of the easiest transmitters to build is a FM transmitter. A basic low power transmitter can be assembled in a few hours, using a minimal set of equipment and components and best of all, it can be done without denting the wallet too much. I am going to describe how to build a very low power FM transmitter. Do not expect this to cover the entire country, an atoll or even an island - it surely will not. However, it will be able to transmit around a block (maybe more with a good antenna) which is more than enough to tread into the world of radio and let yourself be heard. 

Notes on construction:
- You need basic familiarity with electronics to undertake this project. If you studied GCE O' level Physics (or A? level Physics) then you should be familiar with the basic knowledge to go ahead with the construction.
- You can build this using a variety of construction techniques. The preferred method would be using strip board or perf board however point to point wiring would work too. Have a look here for a quick intro to circuit construction methods. Strip boards ARE available in Male'.
- The components given below can be interchanged for a equivalent and values can be approximated. So go ahead and scrounge around broken electronic items for the required components - chances are you will find most of them in broken TVs, Radios and even some toys.

Components:
- 100 Ohm resistor ( brown black brown )
- 100k Ohm resistor ( brown black yellow )
- 15pF ceramic disc capacitor
- 5pF ceramic disc capacitor
- .001uF ceramic disc capacitor
- 1uF electrolytic capacitor
- BC548 or BC108 or equivalent transistor
- Length of insulated copper wire
- Two 1.5 Volt AA size batteries
- Audio jack

Schematic:

Circuit diagram for FM transmitter

The tuning coil used is a length of the insulated copper wire wound around a small pencil about 6 times. The circuit can be tuned to the broadcast FM range by adjusting the coil appropriately. Turn on a FM radio and set it to the frequency you want this circuit to transmit at. Next, try squashing and/or spacing the coil turns until it is tuned to the desired frequency.

The audio can be fed to the transmitter via a tape player, a PC or even an Ipod. All that remains is for you to make your killer radio programs and broadcast it. Have fun! 

The above circuit that I built on a small piece of strip board.

Fm transmitter apps for android

Now turn android phone into radio transmitter and can enjoy with music or entertainments, totally portable device for a smart phone. It can connect with car music system via blue tooth or directly. Easily plug and make pare with vehicle sound system.

   

    This is best Fm transmitter app that provides FM transmission visa Internet.  Now user can enjoy more that 10,000 FM channels of news entertainment, music, sports etc of all countries. These apps provide an FM channel directory to choose a channel We have fine 5 Best android FM transmitter apps these are followed.
An amazing app that is best for those who like to listen music in his vehicle. Easily connect with vehicle sound system visa blue tooth and also connect directly. It makes pairing with car blue tooth and start transitioning with digital sound quality. Easily control FM transmitter. The user has not to set frequency or can use speed tune option. Also select specific channels as favorites and can recalling any time.

Radio FM App Play FM for live on internet.

 Now enjoy above 1000 FM radio channels. A big directory of FM channels of different types to find an FM channel of music, news, shoes etc.

Quick Fm Transmitter App

Quick FM transmitter Only sport on ISO1, ISO3 or ISO5 android phones

RMF Radio FM

It is most fevered in Poland, have the latest technology, not an FM radio transmitter is also give vote for any favorite song and gets audio or video.

 Radiate FM app

It allows to user to listen FM via internet.