A High Power FM Transmitter is a form of electromagnetic wave that radiates in all directions. When a current passes along a wire, a magnetic field is generated around that wire. The wireless transmitters take advantage of this factor to have a pulse with the current in the copper cable inside an antenna.
The cable is grounded at one end and loose at the other end. The grounding allows each signal to dissipate almost immediately, but the presence of the load on the cable momentarily creates a force field that generates a radio wave.
Metal is a conductor of electricity and magnetism. Like the radio wave signal from the transmitter, it sticks to any metal object they find. Then, it deviates and runs along the length of the metal object. That is why large metal objects, such as refrigerators block the Wi-Fi signal and create dead zones.
The signal passes through the plastic housing of the receiving antenna and strikes the copper wire inside. Then it travels along the length of that cable, which leads to a wireless network adapter. The network adapter interprets the electronic pulse as data and passes it to the computer or router.
An FM modulator, on the other hand, allows you to connect an auxiliary device (such as an iPod or a satellite radio receiver) through the channels of a regular radio car. FM modulators come in many shapes and sizes, and have a wide range of prices.
FM modulators come in two forms: wireless and cable. A wireless FM modulator (also known as an FM transmitter) plugs into a speaker on the cigarette lighter socket of your car. The wireless FM modulator then emits a low signal so that your car can pick it up and play it. An FM cable modulator connects through the wires directly to the car’s antenna, creating a solid connection for the speaker.
Wireless and cable FM modulators have pros and cons. For example, a wireless FM modulator is much cheaper, but it has a weak connection to the radio and a low quality sound due to outside radio interference. A cable FM modulator will have a clean signal almost all the time, however, it costs more because (to ensure the quality of the installation itself) it must be installed by a professional.
The radio waves go out like a series of waves. The waves have a rhythm and leave the transmitter at a regular rhythm. This is the frequency. The “frequency” means the number of waves, called “cycles”, emitted per second, and is measured in hertz. Wi-Fi systems work with the frequency band of the microwave.
