FCC Technician Class Exam Study Guide - 2014-2018/Subelement T2 Group B

VHF/UHF operating practices: SSB phone; FM repeater; simplex; splits and shifts; CTCSS; DTMF; tone squelch; carrier squelch; phonetics; operational problem resolution; Q signals

Question 1

 * What is the term used to describe an amateur station that is transmitting and receiving on the same frequency?
 * A. Full duplex communication
 * B. Diplex communication
 * C. Simplex communication
 * D. Multiplex communication

The correct answer is C.

Question 2

 * What is the term used to describe the use of a sub-audible tone transmitted with normal voice audio to open the squelch of a receiver?
 * A. Carrier squelch
 * B. Tone burst
 * C. DTMF
 * D. CTCSS

The correct answer is D.

Question 3

 * Which of the following describes the muting of receiver audio controlled solely by the presence or absence of an RF signal?
 * A. Tone squelch
 * B. Carrier squelch
 * C. CTCSS
 * D. Modulated carrier

The correct answer is B.

Question 4

 * Which of the following common problems might cause you to be able to hear but not access a repeater even when transmitting with the proper offset?
 * A. The repeater receiver may require an audio tone burst for access
 * B. The repeater receiver may require a CTCSS tone for access
 * C. The repeater receiver may require a DCS tone sequence for access
 * D. All of these choices are correct

The correct answer is D.

Question 5

 * What determines the amount of deviation of an FM (as opposed to PM) signal?
 * A. Both the frequency and amplitude of the modulating signal
 * B. The frequency of the modulating signal
 * C. The amplitude of the modulating signal
 * D. The relative phase of the modulating signal and the carrier

The correct answer is C.

Question 6

 * What happens when the deviation of an FM transmitter is increased?
 * A. Its signal occupies more bandwidth
 * B. Its output power increases
 * C. Its output power and bandwidth increases
 * D. Asymmetric modulation occurs

The correct answer is A.

Question 7

 * What could cause your FM signal to interfere with stations on nearby frequencies?
 * A. Microphone gain too high, causing over-deviation
 * B. SWR too high
 * C. Incorrect CTCSS Tone
 * D. All of these choices are correct

The correct answer is A.

Question 8

 * Which of the following applies when two stations transmitting on the same frequency interfere with each other?
 * A. Common courtesy should prevail, but no one has absolute right to an amateur frequency
 * B. Whoever has the strongest signal has priority on the frequency
 * C. Whoever has been on the frequency the longest has priority on the frequency
 * D. The station which has the weakest signal has priority on the frequency

The correct answer is A.

Question 9

 * Which of the following methods is encouraged by the FCC when identifying your station when using phone?
 * A. Use of a phonetic alphabet
 * B. Send your call sign in CW as well as voice
 * C. Repeat your call sign three times
 * D. Increase your signal to full power when identifying

Reference to 97.119(b)(2). The correct answer is A.

Question 10

 * Which Q signal indicates that you are receiving interference from other stations?
 * A. QRM
 * B. QRN
 * C. QTH
 * D. QSB

The correct answer is A.

Question 11

 * Which Q signal indicates that you are changing frequency?
 * A. QRU
 * B. QSY
 * C. QSL
 * D. QRZ

The correct answer B.

Question 12

 * Under what circumstances should you consider communicating via simplex rather than a repeater?
 * A. When the stations can communicate directly without using a repeater
 * B. Only when you have an endorsement for simplex operation on your license
 * C. Only when third party traffic is not being passed
 * D. Only if you have simplex modulation capability

The correct answer is A.

Question 13

 * Which of the following is true of the use of SSB phone in amateur bands above 50 MHz?
 * A. It is permitted only by holders of a General Class or higher license
 * B. It is permitted only on repeaters
 * C. It is permitted in at least some portion of all the amateur bands above 50 MHz
 * D. It is permitted only on when power is limited to no more than 100 watts

The correct answer is C.