What is "Night Effect" in the context of ADF?

"Night Effect" refers to the phenomenon where signals transmitted via sky waves reflect off the ionosphere, which can significantly impact reception quality at night. During nighttime, the ionosphere becomes more conducive to these sky wave reflections due to changes in its physical properties caused by reduced solar activity. This can enhance the propagation of radio waves over long distances, potentially leading to increased signal strength or distortion and interference, affecting the clarity of the received information.

This understanding of "Night Effect" is crucial for radio operators and navigators using ADF (Automatic Direction Finder) systems, as it can lead to varying reception conditions after sunset compared to daytime operations. This knowledge allows users to adjust their strategies for optimal reception and signal interpretation, ensuring more reliable navigation and communication.