RF spectrum is a natural and limited resource. Radio waves are devices that use data from one point to the other without media. One of the most important features of waves is wavelength or frequency. The radio frequency determines the position in the radio spectrum spectrum and thus the propagation of the radio wave and the potential use.
Because radio waves are transboundary and may interfere with other radio waves, many rules, frequency plans and procedures determine the use of radio spectrum for avoiding interference. Since different frequencies have different properties, there are general harmonized frequency bands that determine the main purpose of the band and the fundamental technical parameters of the transmitters using such frequencies. So-called allocation is accepted internationally and provides basic rules for frequency use. Next, each division is further refined and countries can conclude special agreements on the use of specific frequencies.
One of the most popular radio frequency services is terrestrial or satellite radiation. Radio and television are a well-known and well-established way to send pictures and sounds to radio waves. As we generally require large transmission areas, we use low transmitters, high power transmitters at high transmission sites. Large-scale areas also cover cross-border coverage
This is a very important fact because there is only one transmitter in the same area that will operate at a given frequency without interference. Of course, there are special cases such as digital broadcasting and single-frequency networks where near transmitters operate at the same frequency without causing interference, but analog programming requires cautious frequency planning.
There are a number of special regional arrangements for broadcasting frequency bands that specify the frequencies for each country, the procedures for modifying the plan, and a number of rules that must be observed to avoid interference.
If you want to listen to a particular radio, we need to know the frequency at which the radio is displayed. Frequency is like a street address where every house has its own number. The same applies to television. For practical reasons, however, they usually do not work directly with the frequencies but use channels where each channel number represents a (central) frequency with a certain channel bandwidth.
Generally speaking, most consumers do not know all the technical details governing frequency use and provide many wireless services. They only look for good music, quality movies and mobile phones anywhere.
Source by sbobet