What is the purpose of checking SWR after mounting an antenna?

• A. To verify that the antenna matches the transmission line and minimizes reflections
• B. To measure receiver sensitivity
• C. To confirm battery charge level
• D. To adjust squelch setting

Answer: (A)

Checking SWR after mounting an antenna focuses on confirming that the antenna impedance matches the transmission line so RF power is delivered with minimal reflections. A good match, indicated by a low SWR (near 1:1), means the transmitter’s energy flows into the antenna efficiently and the line isn’t carrying a large standing wave that could heat components or cause damage. If the SWR is high, there’s a mismatch that could stem from mounting errors, damaged coax or connectors, or an antenna not tuned for the operating frequency, signaling that adjustments are needed before use. This step isn’t about receiver sensitivity, battery level, or squelch settings, which is why those options don’t fit.