selective fading in a sentence

Examples

1. "' Selective fading "'or "'frequency selective fading "'is a radio propagation anomaly caused by partial cancellation of a radio two different paths, and at least one of the paths is changing ( lengthening or shortening ).
2. "' Selective fading "'or "'frequency selective fading "'is a radio propagation anomaly caused by partial cancellation of a radio two different paths, and at least one of the paths is changing ( lengthening or shortening ).
3. The key idea behind AFH is to use only the  good frequencies, by avoiding the " bad " frequency channels perhaps those " bad " frequency channels are experiencing frequency selective fading, or perhaps some third party is trying to communicate on those bands, or perhaps those bands are being actively jammed.