Final answer:
Broadband cable operators use QAM signal modulation technique for DTV signals transmission.
Explanation:
QAM (Quadrature Amplitude Modulation) is the signal modulation technique that broadband cable operators use to transport DTV signals through the cable network. QAM is a method that combines both amplitude modulation and phase modulation to encode digital information efficiently for transmission over a communication channel.
Learn more about DTV signal modulation here:
https://brainly.com/question/29484199
