Method and apparatus for tuning channels for CATV and television applications

摘要: A method of tuning channels for television and community antenna (CATV) devices includes the step receiving a radio frequency input (RFI) signal having at least one carrier fs associated with selected broadcast channel. The RFI is up-converted by m to first intermediate wherein located +m. filtered. filtered down-converted n second +m-n. Additional methods improving reception channel include varying in order avoid frequency-dependent anomalies within pass band filter. For digital communications, are varied accordance an error rate communications reduce communications.