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How does a simple radio transmitter work?
Radio works by transmitting and receiving electromagnetic waves. The radio signal is an electronic current moving back and forth very quickly. A transmitter radiates this field outward via an antenna; a receiver then picks up the field and translates it to the sounds heard through the radio.
Can I make my own radio station?
Have you ever wished you could start your own radio station? It’s illegal to operate an unlicensed radio station, even at extremely low power [source: FCC]. Establish a source of funding. Remember, you’ll need to pay for studio space and power, among other things.
How to make a single transistor FM radio circuit?
A smart technique can be seen employed in the following single transistor FM radio circuit to attribute better efficiency to this simple design. Here we pull out the emitter capacitor C5 ground link and connect it with the output.
What do you need to make a CW transmitter?
Interestingly, one can make a CW transmitter (that is, one that transmits just one frequency, without the broadband noise) with passive components. All you need is a high frequency voltage source, which can be generated electromechanically. For a real, working example, see the Varberg radio station.
Where does the pramplified Audio Go in a radio circuit?
The pramplified radio audio is sent to the base of T3 via P2 and C6. P2 helps to set the volume of the output, and therefore works like a volume control pot. The transistor T3 further amplifies the audio signal and forwards it to the power amplifier stage built around the transistors T4 and T5.
How does a small FM radio circuit work?
The signals are capacitor coupled through C2. 10K preset VR controls the volume to the input of the amplifier. IC1 is the micro power audio amplifier that works between 4.5 to 12 volts DC. The amplified sound can be heard through the low impedance head phone or small Mylar speakers.