Maximum usable frequency Maximum usable frequency In radio transmission maximum usable frequency (MUF) is the highest radio frequency that can be used for transmission between two points via reflection from the ionosphere (skywave or "skip" propagation) at a specified time, independent of transmitter power. This index is especially useful in regard to shortwave transmissions. In shortwave radio communication, a major mode of long distance propagation is for the radio waves to reflect off the ionized layers of the atmosphere and return diagonally back to Earth. In this way radio waves can travel beyond the horizon, around the curve of the Earth. However the
Radio Waves (Eli Young Band song) on the "Billboard" Hot Country Songs chart on the chart dated July 25, 2009. Radio Waves (Eli Young Band song) "Radio Waves" is a song recorded by American country music group Eli Young Band. It was released in June 2009 as the third single from the album "Jet Black & Jealous". The song reached number 35 on the "Billboard" Hot Country Songs chart. The song was written by Mike Eli and Blu Sanders. "Radio Waves" is an up-tempo song in which the male narrator is reflecting on a past relationship with regret. The narrator sings the song to former lover