If it is still rare due to a malfunction, the wireless products around us may be the cause of interference that we don’t even know. The National Frequency Agency (ANFR) illustrates this through two stories broadcast this year.
In mid-February, a company specializing in professional GPS and Galileo cell phone jammer devices (used for high-precision geolocation) contacted ANFR and asked about the interference affecting its activities.
The company was able to self-diagnose the problem-“Pulse interference centered on the 1581.15 MHz frequency permanently disrupted the reception of GPS L1 and Galileo E1 signals in the 1575.42 MHz frequency band”-but did not find the source of the problem.
With the help of a directional device, ANFR personnel sent to the crime scene found the building emitting the signal, and then found the exact apartment with the help of a portable receiver with a directional antenna.
The operator who did not make a request promptly replaced the defective box upon request.
The second most recent story involves an operator who is a victim of a 3G antenna failure in Gard. Mobile operators suspect that they are repairing electric vehicles (no brand specified).
According to ANFR’s inspection, this car is the source of the problem, but due to its connection and non-electric characteristics:
In order to solve this problem, it is impossible to simply deactivate the SIM card, because if it is not connected, the car may cause some inconvenience. After several hours of work-the dashboard must be completely removed-the mechanic was able to reset the TCU, thus ending the malfunction.
ANFR said it is particularly vigilant for connected electric vehicles, as it is currently investigating two other failures. In all respects, the IAEA reminds that the use of frequencies, equipment or radio systems to interrupt the radio broadcasting of authorized services without complying with the prescribed conditions is punishable by six months’ imprisonment. A fine of 30,000 euros was also imposed.