Dynamic Frequency Selection (DFS) Testing

As wireless technologies continue to expand across the 5 GHz and 6 GHz spectrum, efficient spectrum sharing has become essential. Many wireless devices operate in frequency bands that are also allocated to critical radar systems, including weather radar, military radar, airport surveillance radar, and maritime navigation radar. To prevent harmful interference, regulatory authorities worldwide require dynamic frequency selection (DFS) functionality in applicable wireless products.

DFS is a spectrum management mechanism required for wireless devices operating within specific portions of the 5 GHz frequency band. DFS enables a device to detect the presence of radar signals and automatically avoid occupied channels, thereby minimizing interference with incumbent radar systems. At Alfa Chemistry, our DFS testing services help manufacturers demonstrate compliance with international regulatory requirements, accelerate market access, and ensure reliable coexistence between wireless communication systems and radar services.

Why DFS testing is important

Regulatory agencies such as the Federal Communications Commission (FCC), European regulators under ETSI requirements, and authorities in many Asia-Pacific markets mandate DFS verification as part of wireless certification programs. Failure to meet DFS requirements can result in:

Therefore, comprehensive DFS testing during product development helps identify compliance issues early and reduces certification risks later in the approval process.

We offer an exhaustive range of DFS testing capabilities:

Our DFS testing services applicable to:

We perform testing according to the latest international regulatory requirements:

Advanced DFS test equipment

To ensure accurate and repeatable DFS compliance testing, our laboratories utilize advanced radar simulation and RF measurement systems capable of generating the regulatory radar waveforms specified by FCC, ETSI, and other international standards. Our test infrastructure includes high-performance radar simulators, vector signal generators and analyzers, spectrum analyzers, automated DFS test platforms, and shielded RF environments. These industry-leading systems enable precise evaluation of radar detection performance, channel availability checks, channel move times, and non-occupancy requirements, helping manufacturers achieve reliable and efficient certification results.