All 37 Ham Radio Technician questions for T2 Operating Procedures with the correct answers marked and a short explanation for each, from the official 2026-2030 question pool. Test yourself with the free practice exam.
T2A01
What is a common repeater frequency offset in the 2-meter band?
A. Plus or minus 5 MHz
B. Plus or minus 600 kHz ✓
C. Plus or minus 500 kHz
D. Plus or minus 1 MHz
Why: On 2 meters, repeaters typically transmit and receive 600 kHz apart. For example, a repeater with a 146.940 MHz output listens on 146.340 MHz (minus 600 kHz). The 5 MHz offset is used on 70 centimeters.
T2A02
What is the national calling frequency for FM simplex operations in the 2-meter band?
A. 146.520 MHz ✓
B. 145.000 MHz
C. 432.100 MHz
D. 446.000 MHz
Why: 146.520 MHz is the national FM simplex calling frequency on 2 meters, where stations call each other directly without a repeater. 446.000 MHz is the 70-centimeter equivalent.
T2A03
What is a common repeater frequency offset in the 70-centimeter band?
A. Plus or minus 5 MHz ✓
B. Plus or minus 600 kHz
C. Plus or minus 500 kHz
D. Plus or minus 1 MHz
Why: On the 70-centimeter (420 to 450 MHz) band, repeaters commonly use a 5 MHz split between input and output frequencies. The wider band allows a larger offset than the 600 kHz used on 2 meters.
T2A04
What is an appropriate way to call another station on a repeater if you know the other station's call sign?
A. Say "break, break," then the other station’s call sign, followed by your call sign
B. Say the station's call sign, then identify with your call sign ✓
C. Say "CQ" three times, then the other station's call sign, followed by your call sign
D. Wait for the station to call CQ, then answer with your call sign
Why: To call a specific station on a repeater, say their call sign followed by yours, for example 'W1AW, this is KF1XXX.' Calling CQ on repeaters is uncommon, and 'break break' is reserved for urgent traffic.
T2A05
How should you respond to a station calling CQ?
A. Transmit "CQ" followed by the other station’s call sign
B. Transmit your call sign followed by the other station’s call sign
C. Transmit the other station’s call sign followed by your call sign ✓
D. Transmit a signal report followed by your call sign
Why: Answer a CQ by giving the calling station's call sign first, then your own, such as 'K1ABC, this is KF1XXX.' This tells them you are responding to them and who you are.
T2A06
What is an effective way to seek a call from any phone station when not using a repeater?
A. Sign your call sign once, followed by the words “listening for a call;” if there is no answer, change the frequency and repeat
B. Say “QTC,” followed by “this is” and your call sign; if there is no answer, change the frequency and repeat
C. Transmit an unmodulated carrier for approximately 10 seconds, followed by “this is” and your call sign, and pause to listen; repeat as necessary
D. Repeat “CQ” a few times, followed by “this is,” and your call sign, then pause to listen; repeat as necessary ✓
Why: On simplex phone, call 'CQ CQ CQ, this is' followed by your call sign, then pause and listen. Repeat as needed. An unmodulated carrier causes interference and identifies no one.
T2A07
What does the term "repeater offset" mean?
A. The difference between a repeater’s transmit and receive frequencies ✓
B. The repeater has a time delay to prevent interference
C. The approximately half-second delay to allow for the “squelch tail” to be removed
D. The fee charged by the repeater owner or club to provide for maintenance
Why: A repeater listens on one frequency (its input) and transmits on another (its output). The difference between the two is the offset, such as 600 kHz on 2 meters or 5 MHz on 70 centimeters.
T2A08
What is the meaning of the procedural signal “CQ”?
A. A shortened form of the term “Contest QSO”
B. “Communication Quality,” used to indicate transmitted audio clarity
C. Only the called station should transmit
D. Calling any station ✓
Why: CQ is a general call meaning 'calling any station.' It invites any station that hears the call to respond, for example 'CQ CQ CQ, this is KF1XXX.'
T2A09
Which of the following is a customary way to indicate a station is listening on a repeater and looking for a contact?
A. “CQ CQ” followed by the repeater’s call sign
B. The station’s call sign followed by the word “listening” ✓
C. The repeater’s call sign followed by the station’s call sign
D. “QSY” followed by your call sign
Why: On a repeater, the customary way to announce you are available is to give your call sign followed by 'listening' or 'monitoring.' Calling CQ is generally not used on FM repeaters.
T2A10
What is a band plan, beyond the privileges established by the FCC?
A. A voluntary guideline for using different modes or activities within an amateur band ✓
B. A list of operating schedules
C. A list of available net frequencies
D. A plan devised by a club to indicate frequency band usage
Why: A band plan is a voluntary guideline, adopted by the amateur community, that recommends where different modes and activities (CW, SSB, FM, satellites, beacons) go within a band. It goes beyond what FCC rules require.
T2A11
What term describes an amateur station that is transmitting and receiving on the same frequency?
A. Full duplex
B. Diplex
C. Simplex ✓
D. Multiplex
Why: Simplex means transmitting and receiving on the same frequency, with stations talking directly to each other. Duplex, as used by repeaters, uses separate transmit and receive frequencies.
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
Why: The reverse function swaps your radio's transmit and receive frequencies so you listen on the repeater's input frequency. If you can hear the other station there, you may be able to talk directly on simplex.
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 ✓
Why: CTCSS (Continuous Tone-Coded Squelch System) sends a low-frequency tone, below normal voice audio, along with your transmission. Repeaters requiring that tone ignore signals that lack it.
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
Why: In a linked repeater network, repeaters are connected by radio or internet so that a signal received by any one is retransmitted by all of them, greatly extending coverage.
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 ✓
Why: Hearing a repeater's output but not being able to access it usually means your transmit setup is wrong. A wrong offset, missing or wrong CTCSS tone, or wrong DCS code will all keep the repeater from responding.
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
Why: Talking too loudly causes excessive FM deviation. The repeater or receiver may clip or cut out the audio on voice peaks. Speak at a normal level with the microphone a few inches from your mouth.
T2B06
What type of signaling to a repeater uses two simultaneous audio tones?
A. DTMF ✓
B. CTCSS
C. GMRS
D. D-STAR
Why: DTMF (Dual-Tone Multi-Frequency) uses two simultaneous audio tones per key, like a telephone keypad. Hams use DTMF to send control commands to repeaters. CTCSS uses a single sub-audible tone.
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
Why: On digital systems like DMR, you join a talkgroup by programming its ID number into your radio, usually in a channel or contact entry. No registration with a coordinator is required to select a 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
Why: No station owns a frequency, so being there first gives no legal right. When two stations interfere, they should courteously work out who will continue using 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
Why: Simplex channels let nearby stations talk directly without a repeater. This keeps the repeater free for stations that actually need its extended range.
T2B10
Which Q signal indicates that you are receiving interference from other stations?
A. QRM ✓
B. QRN
C. QTH
D. QSB
Why: QRM means interference from other stations (man-made interference). QRN refers to natural static such as lightning, QTH is location, and QSB is fading.
T2B11
Which Q signal indicates that you are changing frequency?
A. QRU
B. QSY ✓
C. QSL
D. QRZ
Why: QSY means changing frequency, as in 'let's QSY to 146.55.' QSL means acknowledging receipt, QRZ asks who is calling, and QRU means having nothing for you.
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
Why: A DMR color code works much like a CTCSS tone for analog repeaters. Your radio must transmit the repeater's color code (0 to 15) or the repeater will not respond to you.
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
Why: Squelch silences the receiver's speaker when no signal is present, so you do not hear constant background noise. When a signal strong enough to exceed the squelch threshold arrives, audio is heard.
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
Why: A talkgroup is a DMR identifier that sorts traffic, so users hear only the group they select, such as a state or interest group, without being bothered by other traffic on the network.
T2C01 · [97.103(a)]
When do the FCC Part 97 Amateur Radio Service rules NOT apply to the operation of an amateur station?
A. When operating under RACES rules
B. When operating under FEMA rules
C. When operating under ARES rules
D. FCC rules always apply ✓
Why: Per §97.103(a), FCC Part 97 rules apply at all times. Operating under RACES, ARES or FEMA plans does not exempt you from FCC rules.
T2C02
Which of the following are typical duties of a Net Control Station?
A. Choose the regular net meeting time and frequency
B. Ensure that all stations checking into the net are properly licensed for operation on the net frequency
C. Call the net to order and direct communications between stations checking in ✓
D. All these choices are correct
Why: The Net Control Station runs the net: calling it to order, taking check-ins, and directing which stations talk and when. Scheduling the net and verifying licenses are not its typical duties.
T2C03
What technique is used to ensure that voice messages containing unusual words are received correctly?
A. Send the words by voice and Morse code
B. Use the Q-code “QSR” to ask the receiving station to repeat the words back
C. Spell the words using a standard phonetic alphabet ✓
D. All these choices are correct
Why: Spelling unusual words using a standard phonetic alphabet (Alpha, Bravo, Charlie...) ensures they are copied correctly, because each letter is a distinct, easy-to-recognize word.
T2C04
What is RACES?
A. An emergency organization combining amateur radio and citizens band operators and frequencies
B. An international radio experimentation society
C. A radio contest held in a short period, sometimes called a “sprint”
D. An FCC Part 97 amateur radio service for civil defense communications during national emergencies ✓
Why: RACES, the Radio Amateur Civil Emergency Service, is an amateur radio service under Part 97 for civil defense communications during national, local or regional emergencies. Citizens band is not part of it.
T2C05
What does the term “traffic” refer to in net operation?
A. Formal messages exchanged by net stations ✓
B. The number of stations checking in and out of a net
C. Operation by mobile or portable stations
D. A count of the number of activations of the net each month
Why: In net operations, traffic means formal messages, such as radiograms, that are relayed between stations. It does not refer to the number of check-ins.
T2C06
What is the Amateur Radio Emergency Service (ARES)?
A. A group of licensed amateurs who have voluntarily registered their qualifications and equipment for communications duty in the public service ✓
B. A group of licensed amateurs who are members of the military and who voluntarily agreed to provide message handling services in the case of an emergency
C. A training program that provides licensing courses for those interested in obtaining an amateur license to use during emergencies
D. A training program that certifies amateur operators for membership in the Radio Amateur Civil Emergency Service
Why: ARES is an ARRL program of licensed amateurs who voluntarily register their qualifications and equipment to provide public service and emergency communications. It is not a military or licensing program.
T2C07
Which of the following is standard practice when you participate in a net?
A. When first responding to the net control station, transmit your call sign, name, and address as in the FCC database
B. Record the time of each of your transmissions
C. Unless you are reporting an emergency, transmit only when directed by the net control station ✓
D. All these choices are correct
Why: In a directed net, stations transmit only when the net control station calls on them, unless reporting an emergency. This keeps the net orderly and efficient.
T2C08
Which of the following relays messages using email addresses based on amateur callsigns?
A. Winlink ✓
B. FT8
C. PSK31
D. AMTOR
Why: Winlink is a radio email system using addresses based on amateur call signs, such as KF1XXX@winlink.org. FT8 and PSK31 are keyboard or weak-signal modes, not email relays.
T2C09
Are amateur station control operators ever permitted to operate outside the frequency privileges of their license class?
A. No
B. Yes, but only when part of a FEMA emergency plan
C. Yes, but only when part of a RACES emergency plan
D. Yes, but only in situations involving the immediate safety of human life or protection of property ✓
Why: In situations involving immediate safety of human life or protection of property, when normal communications are not available, an amateur may use any means of radio communication, even outside license privileges.
T2C10
What information is contained in the preamble of a formal traffic message?
A. The email address of the originating station
B. The address of the intended recipient
C. The telephone number of the addressee
D. Information needed to track the message ✓
Why: The preamble of a formal message (radiogram) contains tracking information such as message number, precedence, station of origin, check, place of origin, and date and time filed. Addresses come later in the message.
T2C11
What is meant by “check” in a radiogram header?
A. The number of words or word equivalents in the text portion of the message ✓
B. The call sign of the originating station
C. A list of stations that have relayed the message
D. A box on the message form that indicates that the message was received and/or relayed
Why: In a radiogram, the check is the number of words or word groups in the message text. The receiving station counts the words to verify that the entire text arrived intact.
T2C12
Which of the following requires certification by a civil defense agency?
A. ARES
B. RACES ✓
C. MARS
D. SKYWARN
Why: RACES operators must be certified by a civil defense organization, as §97.407 requires. ARES, MARS and SKYWARN have their own registration or training but no such certification requirement.