T8-T9 All Questions Colstrip Ham Radio

What type of modulation is commonly used for VHF packet radio transmissions?

• FM or PM

• SSB

• AM

• PSK

Which of the following is a form of amplitude modulation?

• Spread spectrum

• Packet radio

• Single sideband

• Phase shift keying (PSK)

Which type of voice mode is often used for long-distance (weak signal) contacts on the VHF and UHF bands?

• FM

• DRM

• SSB

• PM

Which type of modulation is commonly used for VHF and UHF voice repeaters?

• AM

• SSB

• PSK

• FM or PM

Which of the following types of signal has the narrowest bandwidth?

• FM voice

• SSB voice

• CW

• Slow-scan TV

Which sideband is normally used for 10 meter HF, VHF, and UHF single-sideband communications?

• Upper sideband

• Lower sideband

• Suppressed sideband

• Inverted sideband

What is a characteristic of single sideband (SSB) compared to FM?

• SSB signals are easier to tune in correctly

• SSB signals are less susceptible to interference

• SSB signals have narrower bandwidth

• All these choices are correct

What is the approximate bandwidth of a typical single sideband (SSB) voice signal?

• 1 kHz

• 3 kHz

• 6 kHz

• 15 kHz

What is the approximate bandwidth of a VHF repeater FM voice signal?

• Less than 500 Hz

• About 150 kHz

• Between 10 and 15 kHz

• Between 50 and 125 kHz

What is the approximate bandwidth of AM fast-scan TV transmissions?

• More than 10 MHz

• About 6 MHz

• About 3 MHz

• About 1 MHz