Checkpoint: T2B — HAM Trainer

T2B01 What is the purpose of the reverse function on a VHF/UHF transceiver?

A To reduce power output B To increase power output C To listen on a repeater's input frequency D To listen on a repeater's output frequency

T2B02 What term describes the use of a sub-audible tone transmitted along with normal voice audio to open the squelch of a receiver?

A Carrier squelch B Tone burst C DTMF D CTCSS

T2B03 Which of the following describes a linked repeater network?

A A network of repeaters in which signals received by one repeater are transmitted by all the repeaters in the network B A single repeater with more than one receiver C Multiple repeaters with the same control operator D A system of repeaters linked by APRS

T2B04 Which of the following could be the reason you are unable to access a repeater whose output you can hear?

A Improper transceiver offset B You are using the wrong CTCSS tone C You are using the wrong DCS code D All these choices are correct

T2B05 Which of the following would cause your FM transmission audio to drop out on voice peaks?

A Your repeater offset is inverted B Your FM deviation is too low C You are talking too loudly D Your transmit power is too high

T2B06 What type of signaling to a repeater uses two simultaneous audio tones?

A DTMF B CTCSS C GMRS D D-STAR

T2B07 How can you join a digital repeater's "talkgroup"?

A Register with the local Frequency Coordinator B Register with the digital repeater control operator C Program your radio with the group's ID or code D Program your radio with the DTMF tone used by the talkgroup

T2B08 Which of the following applies when two stations transmitting on the same frequency interfere with each other?

A The stations should negotiate continued use of the frequency B Both stations should choose another frequency to avoid conflict C Whichever station was on the frequency first has preemptive rights to the frequency D Use subaudible tones so both stations can share the frequency

T2B09 Why are simplex channels designated in the VHF/UHF band plans?

A So stations within range of each other can communicate without tying up a repeater B For contest operation C For working DX only D So stations with simple transmitters can access the repeater without automated offset

T2B10 Which Q signal indicates that you are receiving interference from other stations?

A QRM B QRN C QTH D QSB

T2B11 Which Q signal indicates that you are changing frequency?

A QRU B QSY C QSL D QRZ

T2B12 What is the digital color code used on DMR repeater systems?

A An access code which must be programmed into a DMR transmitter to access a specific repeater B A code which automatically programs the repeater offset to a frequency chosen by the user C A code which identifies the specific CODEC being used so that the repeater can properly decode the audio D A code transmitted by the repeater to indicate health and status of the equipment

T2B13 What is the purpose of a squelch function?

A Reduce a CW transmitter's key clicks B Mute the receiver audio when a signal is not present C Eliminate parasitic oscillations in an RF amplifier D Reduce interference from impulse noise

T2B14 Which of the following is a "talkgroup"?

A A group of amateur radio operators who share email on a specific amateur radio topic B An identifier used by DMR to organize radio traffic so that those who want to hear the group aren't bothered by other radio traffic C The members of a net organized for amateur radio operators with a specific common interest D A method of automatically alerting all group members to the frequency where any member is transmitting