On January 29, 2026, NextNav filed a further technical response to the Security Industry Association (SIA) sponsored paper produced by Pericle Communications Company. In NextNav’s filing, the company expanded on its prior analysis and identified clear errors in Pericle’s modeling assumptions, internal inconsistencies in key operating parameters, and methodological choices that depart from accepted engineering practice.
From the filing:
As NextNav stated in its initial response in November, “Pericle’s conclusions cannot be reconciled with the realities of physics.” In this latest filing, NextNav highlights how “Pericle’s predicted 5G emission levels exceed even free-space conditions.” In other words, Pericle claims that 5G signals in typical 5G deployments are much stronger than signals traveling in a vacuum. Pericle’s subsequent errors in its Monte Carlo simulation lead to overstating its conclusions about potential impact due to 5G by more than a factor of 10,000 in one of its representative scenarios. For these reasons alone, Pericle’s conclusions should be set aside.
The following can be attributed to Dr. John Kim, NextNav’s Senior Vice President of Technology Development.
“Although the claims in the SIA-sponsored paper and recent filings lack credibility, NextNav has carefully reviewed each one to ensure this proceeding is guided by sound engineering and rigorous technical analysis. These conclusions do not withstand scrutiny and should be set aside by the Commission. We found that the modeling used throughout the paper is flawed and inconsistent with basic physics and engineering principles, resulting in interference scenarios that do not reflect real-world conditions.”