11. A modulator and carrier signal are sent through a series of these tuned bandpass filters. 12. Some signaling schemes use modulation of a carrier signal ( with or without wires ). 13. Usually, this carrier signal is a specific frequency, and data is transmitted through its variations. 14. Between 2200 GMT and 2400 GMT Thursday, they listened for the Beagle's simple carrier signal . 15. Prominent multiplexing methods of the carrier signal are time-division multiplexing ( TDM ) and frequency-division multiplexing. 16. From the early 1970s, satellites generating swinging carrier signals were used to interfere even more effectively. 17. The tag uses the un-modulated carrier signal as a phase reference for demodulating the data signal. 18. A transformer-isolated amplifier relies on transformer coupling of a high-frequency carrier signal between input and output. 19. The carrier signal came from a Moog modular synthesizer, and the modulator from a microphone input. 20. The repeater receiver must first sense the carrier signal on the input, then decode the CTCSS tone.
