Signals that are used by cable TV is usually sent through satellites. However, antennas can usually detect or receive two types of signals and they are Very high frequency- this describes the signal that is received and typically you will receive about 13 channels depending on how the reception is in your area. The signals received in this frequency tend to be more stable and of better quality. Ultra-high frequency- Here, you will receive a number of channels but there is a great possibility of interference from the weather. Installation: It is highly recommended to get a professional to install the antennas for you. There are several reasons for this - Installation of antennas requires a lot of physical work.