Frequency Domain Reflectometry (FDR) techniques have a clear advantage for testing antennas, filters and duplexes. Since these devices are found in antenna systems, FDR techniques are also preferred for coaxial antenna feeds. FDR is clearly a better choice.
FDR finds potential problems quickly and reliably allowing clients to implement preventative maintenance plans and reduce costs per client expense. For example: Problems such as vapor intrusion, antenna bandwidth drift, loose connectors, corroded conductors of damaged lightning arrestors can be identified before severe damage or failure occurs. Corrective action can be taken. The timely inspection of the problem component mitigates the need for future replacement of the complete antenna system.