Does 5G interfere with radar altimeter?

Since the beginning of December, the two sides of the 5G C-Band deployment have agreed to several delays and risk mitigation measures for the 5G towers being deployed to ensure aircraft radar and radio altimeter signals do not experience interference from the new wireless network services that are being deployed .

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Why is FAA worried about 5G?

Flight regulators are very nervous about this C-band update because of how it might affect certain aircraft’s radio altimeters . … In a nightmare scenario, the FAA thinks that signals sent over C-band could interfere with these altimeters — specifically older altimeters — creating a potential safety issue.19 Oca 2022

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