|Radio - FM-Radio Transmitter|
att wireless communication
A High range FM transmitter. Its range is 8-10 KM.
Building a good fm-transmitter(88-110Mhz) begins with getting a good schematic. You don't have to understand the precise working of the transmitter to build it. But some basic information won't harm. A transmitter alone is, as you probably know, is not enough to start your radio-station. In the simplest form you need 4 things. First an input device such as an amplifier you also use with your home-stereo.
You can also use a Walkman. Details about input-devices in the page: "Input". Second you need a regulated power-supply. In this case a 14-18 Volts/2,5-3,5 Ampere. One of the most influential things you need is antenna and coax-cable. More about this later on. And finally the transmitter itself. You can decide the transmitter in two main parts: the oscillator and the amplifier. The oscillator converts electric sound information into electromagnetic waves. The amplifier gives these waves
a bigger amplitude.
It's stable and has output of 15-18 watts. This enough to terrorize your wide surroundings at the fm-band.
The most often used technique to connect the components to each other is soldering them on a double sided copper-board. Another way is connecting the components floating. It is cheaper but very tricky. Below you see the copper-board layout(PCB). I designed it looking closely at the root scheme.
Circuit Diagram :
Visit this page for complete explanation.
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Last Updated (Thursday, 05 November 2009 01:51)