Why are airlines afraid of “5G”? .. A scientific journal reveals dangerous facts
In a new report published, a scientific journal revealed the serious reasons why airlines around the world refrain from carrying out flights in countries where 5G networks are operating.
The new high-speed mobile phone services that use the fifth generation have raised concerns of interference with aircraft operations, especially during the landing process at airports.
Concerns began to grow after the US government sold a portion of its C-band spectrum to wireless carriers in 2021 for $81 billion.
According to an extensive report published by the agency "Sputnik".
Telecom companies use the C-band spectrum to provide the fifth generation (5G) service at the maximum speed, which is 10 times the speed of the fourth generation (4G) networks.
The C-band spectrum is close to the frequencies used by the main electronics that planes rely on to land safely.
Wireless signals are transmitted by radio waves. The radio spectrum ranges from 3 Hz to 3000 GHz and is part of the electromagnetic spectrum, and the part of the radio spectrum that transmits signals from your phone and other wireless devices is from 20 kHz to 300 GHz.
If there are two radio signals in the same area that use the same frequency, we get distorted noise, and we can hear this problem when we are halfway between two radio stations that use the same frequency bands or similar frequency bands to send their information, for example about moving from city to city while listening To radio or binomial navigation on mobile.
The signals are distorted and sometimes heard from one station, at other times, all mixed in with a dose of noise.
America, according to the article published in the magazine "scitechdaily", regulates the use of these frequency bands strictly by the Federal Communications Commission to ensure that "lanes" or frequency spectrums are allocated to radio stations, wireless carriers and other organizations to use them in an orderly and non-random manner in order to prevent interference from occurring.
Modern planes use altimeters, which calculate the time it takes for a signal to bounce off the ground to determine the plane's altitude.
These altimeters are a vital and important part of automatic landing systems that are especially useful in situations where visibility is low and unclear, especially in winter weather conditions.
So, if the altimeter interprets a signal from a radio transmitter as a signal bouncing back from the ground, the device may miscalculate the distance between the aircraft and the ground, and the autopilot or human pilot, prematurely, attempts to lower the landing gear and perform other maneuvers necessary to land the aircraft.
If interference with the radio transmitter signals damages and jams the radio signals of the altimeter, the altimeter may lose the returned signal, and therefore it will not be able to tell how close the aircraft is to the ground.
The portions of the radio frequency spectrum used by aircraft and mobile carriers vary.
The problem is that aircraft altimeters use the 4.2 to 4.4 GHz band, while the recently sold, previously unused C-band ranges from 3.7 to 3.98 GHz.
The Telecommunications Industry Corporation of America argued that a gap of 0.22 GHz is sufficient and there would be no interference, but in any case, even if the risks are very small, the consequences of a plane crash are enormous.
To solve this problem temporarily, the telecommunications companies agreed not to deploy fifth generation (5G) transmitters and receivers near the 50 largest airports for a period of six months to work on finding a solution to the problem and averting a major crisis in the near term, but not a permanent solution, as the expert explains.
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