Group T8A

12 questions from the official pool, drawn by ID — exact wording, never retyped.

T8A01 Which of the following is a form of amplitude modulation?

A Spread spectrum B Packet radio C Single sideband D Phase shift keying (PSK)

T8A02 What type of modulation is commonly used for VHF packet radio transmissions?

A FM or PM B SSB C AM D PSK

T8A03 Which type of voice mode is often used for long-distance (weak signal) contacts on the VHF and UHF bands?

A FM B DRM C SSB D PM

T8A04 Which type of modulation is commonly used for VHF and UHF voice repeaters?

A AM B SSB C PSK D FM or PM

T8A05 Which of the following signal types has the narrowest bandwidth?

A FM voice B SSB voice C CW D Slow-scan TV

T8A06 Which sideband is normally used for 10-meter HF, VHF, and UHF single-sideband communications?

A Upper sideband B Lower sideband C Suppressed sideband D Inverted sideband

T8A07 What is one characteristic of single sideband (SSB) compared to FM?

A SSB signals are easier to tune in correctly B SSB signals are less susceptible to interference C SSB signals have narrower bandwidth D SSB signals are less susceptible to high SWR

T8A08 What is the approximate bandwidth of a typical single sideband (SSB) voice signal?

A 1 kHz B 3 kHz C 6 kHz D 15 kHz

T8A09 What is the approximate bandwidth of an FM voice signal on VHF repeaters?

A Less than 500 Hz B About 150 kHz C Between 10 and 15 kHz D Between 50 and 125 kHz

T8A10 What is the approximate bandwidth of AM fast-scan TV transmissions?

A More than 10 MHz B About 6 MHz C About 3 MHz D About 1 MHz

T8A11 What is the approximate bandwidth required to transmit a CW signal?

A 2.4 kHz B 150 Hz C 1000 Hz D 15 kHz

T8A12 Which of the following is a disadvantage of FM compared with single sideband?

A Voice quality is poorer B Only one signal can be received at a time C FM signals are harder to tune D FM signals are more susceptible to high SWR