Installing ceramic or porcelain tile is both an art and a science. Tile installers must know the composition of the tiles as well as how to lay them in place attractively. Besides the normal costs of labor and materials, a tile project's costs vary by the type of sub-flooring to be used as a foundation for the tile.
Three things can cause an EMI problem: A signal source creates some kind of noise, there is a transmission path for the noise, and/or there is a receiver sensitive enough to be distorted by the noise, as shown in Figure 1.
Causes of EMI Interference. here are two main causes of EMI interference. The first is when twinlead, a two conductor antenna lead-in wire, is used between the receiving TV antenna and the TV and/or VCR. Twinlead is the original type of downlead, but should never be used in modern TV antenna systems.