1. If you are using a high-gain antenna and have used a feedline during calibration, then calibration is necessary.
2. The lowest point of the standing wave is affected by the environment, so the lowest standing wave frequency you measure in a typical environment does not necessarily represent the antenna's actual lowest standing wave frequency or its center frequency.
3. To determine the center frequency of an antenna, consider both standing wave and impedance. Generally, the closer the impedance is to 50 ohms, the more effectively it will resonate at the center frequency.
4. Finally, use a standing wave meter to check the actual transmission results and determine if the high standing wave is caused by poor grounding or environmental factors.
5. Finally, I believe that the condition of the antenna also plays a role. If the antenna transmits at a slightly different frequency, or if there are unwanted signals interfering with the transmission, this can affect the accuracy of the power standing wave meter readings.
闽ICP备2021006864号-7
闽公网安备35020602002794号