Cable TV systems are well known for providing broadband internet access and VoIP phone service, as well as television services. These systems use standard 6 MHz cable TV channels, but because the link is well controlled (since it is over a cable) the systems can use very high order modulation schemes to provide very high digital data rates. In many cable systems one conventional TV channel can carry as many as 10 digital TV channels. Strengths: Reliable, Low cost, low power equipment and service, High data rate, No antennas, Secure. Limitations: Requires cable connection, Cable connections not always available at or near roadside, Uncertain rural availability. Lifetime 5-10 years