Application Note

Identifying And Locating Cable TV Interference

Source: Anritsu Company
Identifying And Locating Cable TV Interference

RF interference occurs when unwanted RF signals enter the front end of a radio receiver and either causes the receiver sensitivity to lower, or prohibits reception completely. Early cable TV systems had signals that were sent over the cables that were the same as the signals transmitted over the air, therefore reducing the extent of interference problems. Cable TV services now offer more and more TV channels with transmitted signals covering virtually the entire spectrum from 7 MHz to over 1 GHz, where many other services operate as well. All of these services can be subject to interfering signals radiating from cable TV systems, and in turn, over the air signals can leak into the cable TV plant and cause interference. This white paper discusses locating and identifying interference signals for cable television, and offers recommendations on how to fix this problem. Download the full article for more information.