5 Reasons to Install A 5G Radio Altimeter Filter

March 2024

Installing a 5G radio altimeter filter in your jet aircraft may ensure that the radio altimeter system functions properly and may prevent interference from 5G signals. Here are a few reasons why you might consider installing such a filter.

1. Frequency Interference: The radio altimeter typically operates in the frequency range of 4.2 GHz to 4.4 GHz. The deployment of 5G networks introduces new frequency bands, including those around 3.5GHz and higher. Without proper filtering, these 5G signals could interfere with the radio altimeter frequencies, leading to inaccurate altitude readings or even loss of signal.
2. Safety and Navigation: The radio altimeter is a critical component for aircraft navigation, especially during low-altitude operations such as takeoff and landing. Interference from 5G signals could compromise the accuracy and reliability of altitude information, potentially impacting the safety of flight operations.
3. Regulatory Compliance: Aviation authorities, such as the FAA (Federal Aviation Administration) or the EASA (European Union Aviation Safety Agency), may require compliance with specific standards to ensure that avionics systems are not susceptible to interference from external sources.
4. Avoidance of False Alarms: Interference from 5G signals may trigger false alarms or warnings in the radio altimeter systems, leading to unnecessary pilot actions or disruptions in normal flight operations. A filter helps to mitigate these false alarms and ensures the system’s reliability.
5. Future-Proofing: As 5G networks continue to expand globally, the potential for interference is likely to increase. Installing a 5G filter now can be a proactive measure to future-proof your aircraft’s avionics systems against potential issues that may arise with the proliferation of 5G technology.

Before installing any equipment or making any modifications to avionics systems, it is crucial to consult with aircraft manufacturers, avionics experts, and regulatory authorities to ensure compliance with safety standards and regulations. The specific requirements may vary depending on the type of aircraft and the aviation authority overseeing its operation.

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