ABSTRACT
Transmission lines are one of the main components in the RF transmission plant of a broadcast station. Acting as the connecting link between the transmitter and the antenna, the transmission line plays a critical role in both the quality and reliability of the broadcast signal; therefore, the proper choice of a transmission line type to be used can have a significant impact on the success of the station. With the development of digital formats for transmitting broadcast signals, it is important to review the existing transmission line performance specifications and any measured data on the installed line at the broadcast site prior to completing plans for implementing digital transmission. This review can prevent costly mistakes regarding longterm reliability and meeting necessary minimum transmission criteria for a robust hybrid analog/digital signal. See the Digital Transmission Requirements section in this chapter for additional information.
