|This article does not cite any sources. (August 2009) (Learn how and when to remove this template message)|
In mediumwave broadcasting, a mush zone is a region where the ground wave and sky wave from a transmitter are received at approximately equal signal strength, resulting in interference between the two, which will typically cause fading and distorted audio.
The effect can reduce the coverage area of a transmission at night, even in the absence of interfering signals from any other source.
It can be mitigated to some extent by the use of a tall mast radiator of up to about 0.6 wavelengths height, which increases the ground wave field strength while reducing high-angle sky wave radiation.
|This article related to telecommunications is a stub. You can help Wikipedia by expanding it.|