Amateur radio signals

Question 1

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

Answer 1

FM

Question 2

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

Answer 2

FM

Question 3

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

Answer 3

Single Sideband (SSB)

Question 4

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

Answer 4

SSB

Question 5

Where may SSB phone be used in amateur bands above 50 MHz? (T2B13)

Answer 5

In at least some portion of all these bands

Question 6

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

Answer 6

Upper sideband

Question 7

What is an advantage of single sideband (SSB) over FM for voice transmissions? (T8A07)

Answer 7

SSB signals have narrower bandwidth

Question 8

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

Answer 8

3 kHz

Question 9

What is the approximate bandwidth of a VHF repeater FM phone signal? (T8A09)

Answer 9

Between 10 and 15 kHz

Question 10

What is the typical bandwidth of analog fast-scan TB transmissions on the 70 centimeter band? (T8A10)

Answer 10

About 6 MHz

Question 11

What type of transmission is indicated by the term “NTSC?” (T8D04)

Answer 11

An analog fast scan color TV signal (National Television Standards Committee)

Question 12

Which of the following types of emission has the narrowest bandwidth? (T8A05)

Answer 12

CW

Question 13

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

Answer 13

150 Hz

Question 14

What code is used when sending CW in the amateur bands? (T8D09)

Answer 14

International Morse

Question 15

What is an electronic keyer? (T8D14)

Answer 15

A device that assists in manual sending of Morse code