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T8A - Signals and emissions

Technician Class

Basic characteristics of FM and SSB; Bandwidth of various modulation modes: CW, SSB, FM, fast-scan TV; Choice of emission type: selection of USB vs LSB, use of SSB for weak signal work, use of FM for VHF packet and repeaters

12 questions

All T0A T0B T0C T1A T1B T1C T1D T1E T1F T2A T2B T2C T3A T3B T3C T4A T4B T5A T5B T5C T5D T6A T6B T6C T6D T7A T7B T7C T7D T8A T8B T8C T8D T9A T9B

T8A01

Which of the following is a form of amplitude modulation?

T8A02

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

T8A03

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

T8A04

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

T8A05

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

T8A06

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

T8A07

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

T8A08

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

T8A09

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

T8A10

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

T8A11

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

T8A12

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