Cable Television Service in San Bruno is a television system that transmits through cables. Cable television service is a system that provides television to consumers in California via radio frequency signals which are transmitted to televisions through the coaxial cables. It is also a kind of digital light pulse through fixed optical strings located on the subscriber's property, almost like traditional television broadcasting through radio waves in which a television antenna is essential. Through the cable service many non-television services may also be provided like, FM radio programming, high-speed Internet, telephone, etc. The key service is different radio frequency signals used bringing optical links to the subscribers property.