Completion Principle of Comm

________________ information can be sent directly and unmodified over the medium or can be used to modulate a carrier for transmission over the medium

• Broadband

• Baseband

• Fiber Optic

• Microwave

___________________ transmission takes place when a carrier signal is modulated, amplified, and sent to the antenna for transmission.

• Broadband

• Baseband

• Fiber Optic

• Microwave

Amplitude modulators compute the ____________ of the carrier and modulating signals.

• sum

• difference

• product

• combination

The difference between the upper and lower frequency limits of a signal or the equipment operation range is the

• amplitude

• bandwidth

• spectrum

• medium

Signals generated at frequencies above and below a carrier frequency by an amount equal to the modulating frequency are called

• sidebands

• duplex signals

• analog signals

• gamma rays

__________________ is the process of allowing two or more signals to share the same medium or channel.

• modulation

• demodulation

• multiplexing

• demultiplexing

Short waves, VOA, BBC broadcasts, government and military two-way communication, amateur radio and CB fall under what frequency range in the electromagnetic spectrum?

• MF

• VHF

• UHF

• HF

FM radio broadcasting, television channels 2–13 fall under what frequency range in the electromagnetic spectrum?

• MF

• HF

• UHF

• VHF

TV channels 14–67, cellular phones and military communication fall under what frequency range in the electromagnetic spectrum?

• MF

• VHF

• HF

• UHF

AM radio fall under what frequency range in the electromagnetic spectrum?

• HF

• VHF

• UHF

• MF