Why are airlines afraid of "5G"? A scientific journal reveals dangerous facts

A scientific journal revealed, in a new report published, the serious reasons that made airlines around the world refrain from carrying out flights in countries where fifth generation networks are operating.

The new high-speed 5G mobile services have raised concerns of interference with aircraft operations, especially during the landing process at airports.

Concerns began to grow after the US government sold part of the "C" band spectrum to wireless carriers in 2021 for $81 billion. According to an extensive report published by "Sputnik".

Telecom companies use C-band spectrum to provide 5G service at full speed, 10 times the speed of 4G networks. The C band spectrum is close to the frequencies used by the key electronics that aircraft rely on for a safe landing.

Wireless signals are transmitted by radio waves. The radio spectrum ranges from 3 Hz to 3000 GHz which is part of the electromagnetic spectrum. 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, then we get distorted noise, and we can hear this problem when we are in the middle of the distance between two radio stations that use the same or similar frequency bands to send their information, for example when moving from a city of a city while listening to the radio or navigating while on mobile. The signals are distorted and sometimes heard from one station, and at other times, all mixed with a dose of noise.

According to the article published in the "scitechdaily" magazine, America strictly regulates the use of these frequency bands by the Federal Communications Commission to ensure that "corridors" or frequency spectrum are allocated to radio stations, wireless carriers, and other organizations for use in an orderly and non-random manner in order to prevent interference. .

Modern aircraft use altimeters, which calculate the time it takes for the signal to bounce back from the ground to determine the aircraft's altitude. These altimeters are a vital and important part of automatic landing systems that are particularly useful in situations where visibility is low and unclear, Especially in the weather conditions during the winter.

Therefore, if the altimeter interprets a signal from a radio transmitter as a signal returned from the ground, the device may make erroneous estimates of the distance between the aircraft and the ground, and the autopilot or human pilot may prematurely attempt to lower the landing gear and perform other maneuvers necessary to land the aircraft .

If interference with the wireless carrier signals damages and interferes with the altimeter's radio signals, the altimeter may lose its return signal, and thus not be able to tell how close the aircraft is to the ground.

The portions of the radio frequency spectrum used by aircraft and cell phone carriers vary. The problem is that aircraft altimeters use the 4.2 to 4.4 GHz band, while the recently sold, and previously unused, C band for wireless carriers is 3.7 to 3.98 GHz.

The Telecommunications Industry Association of America has argued that the 0.22GHz gap is sufficient and there will be no interference, but anyway, even if the risks are very small, the consequences of a plane crash are enormous.

To temporarily solve this problem, telecommunications companies agreed not to deploy 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 avoid a major crisis in the short term, but it is not a permanent solution, as the expert explains. .

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