How Radio wave are generated in FM?

[Robo29]

Hello,
How radio wave are generated in FM ?
how wireless switch work?

 

[ag273n]

a short and simple answer:

Through oscillations in the circuit...

works the same on TV Remotes, FM Radio's, IR Remote, TV Signals, Cellular Signals, Wifi Signals - they all just have different frequencies. I recommend further reading around some electronics websites, and a lot of youtube videos

 

[davenn]

Hello,
How radio wave are generated in FM ?
how wireless switch work?

have you even tried to google FM radio transmission ??

 

[Robo29]

ok, i order this..

http://www.projectntraining.com/7_Watt_FM_Transmitter_Range-15_KMs_Rs6990-/p395090_16346386.aspx

 

[Harald Kapp]

Observe local regulations governing the operation of your own FM radio transmitter. You most probably will have to get a license. Otherwise operating such a transmitter may be illegal.

 

[HellasTechn]

How radio wave are generated in FM ?

An FM (frequency modulation) signal is nothing more than a standard amplitude signal that it's frequency swings in accordance with the data to be transmitted. There is always a center frequency and the slight increase or decrease of this frequency is then converted in increase or decrease of voltage on the receiver.

you can read more about Amplitude Modulation (AM) and Frequency Modulation (FM) here :
http://www.rfcafe.com/references/electrical/NEETS-Modules/NEETS-Module-17-2-11-2-20.htm

 

[AnalogKid]

ok, i order this..
http://www.projectntraining.com/7_Watt_FM_Transmitter_Range-15_KMs_Rs6990-/p395090_16346386.aspx

Why? What is it you want to do?

 

[Robo29]

how fm is decoded in circuit??

 

[Robo29]

Why? What is it you want to do?

I will broadcast the fm 15km range

 

[ag273n]

I will broadcast the fm 15km range

you'll need a really tall antenna for that, something taller than a 5-floor building... regardless of what you have already purchased, FM signals work best without a lot of obstructions so if you're in a city, you'll have a big problem... Otherwise if you're on top of a mountain, then you can just hang the antenna on a tree but the antenna will need to be about a meter long.
Your transmitter won't be as portable because of the antenna.

 

[davenn]

you'll need a really tall antenna for that, something taller than a 5-floor building... regardless of what you have already purchased, FM signals work best without a lot of obstructions so if you're in a city, you'll have a big problem

and added to the above you will need a licence from the authorities who will allocate a frequency to you once they are happy with your system

and on that note we will close the thread