333333

What is the purpose of down-converting the received RF carrier?

• To increase the frequency

• To amplify the signal

• To transmit the signal

• To reduce the frequency

What is the typical frequency range for Baseband frequencies?

• Between 10 MHz and 20 MHz

• Above 20 MHz

• Less than 9 MHz

• Less than 5 MHz

What frequency range is specified for IF frequencies?

• 100 MHz to 120 MHz

• 30 MHz to 50 MHz

• 60 MHz to 80 MHz

• 80 MHz to 100 MHz

What is another name for a local oscillator?

• High-frequency oscillator

• Shift oscillator

• Modulating oscillator

• Carrier oscillator

What type of transmission requires a direct signal path between antennas?

• Sky wave transmission

• Ground wave transmission

• Line-of-sight transmission

• Satellite transmission

What is a temporary reduction in signal strength called?

• Signal distortion

• Noise interference

• Radio fade

• Signal drop

What does diversity in transmission suggest?

• Single transmission path

• Multiple transmission paths

• Interference in transmission

• No transmission method

What is frequency diversity?

• Using one RF carrier frequency

• Transmitting in one polarization

• Modulating two RF carrier frequencies

• Using a single antenna

What does space diversity involve?

• Using a single frequency

• Using one antenna

• Transmitting in one direction

• Feeding output to multiple antennas

What is polarization diversity?

• Using multiple frequencies

• Using one electromagnetic polarization

• Transmitting without antennas

• Propagating a single RF carrier with two polarizations