/30 Technician Class (2022-2026) Online practice test for the U.S. ham radio technician license exam. 1 / 30 Which of the following is accurately represented in electrical schematics? Component connections Wire lengths Physical appearance of components All these choices are correct 2 / 30 Which is true about forward voltage drop in a diode? It is lower in some diode types than in others It is proportional to peak inverse voltage It has no impact on the voltage delivered to the load It indicates that the diode is defective 3 / 30 Why do VHF signal strengths sometimes vary greatly when the antenna is moved only a few feet? VHF ionospheric propagation is very sensitive to path length The signal path encounters different concentrations of water vapor Multipath propagation cancels or reinforces signals All these choices are correct 4 / 30 How is over the air access to IRLP nodes accomplished? By using DTMF signals By using CTCSS tone codes By obtaining a password that is sent via voice to the node By entering the proper internet password 5 / 30 What is a likely cause of irregular fading of signals propagated by the ionosphere? Random combining of signals arriving via different paths Intermodulation distortion Frequency shift due to Faraday rotation Interference from thunderstorms 6 / 30 Why is coaxial cable the most common feed line for amateur radio antenna systems? It is easy to use and requires few special installation considerations It has less loss than any other type of feed line It can handle more power than any other type of feed line It is less expensive than any other type of feed line 7 / 30 What is component 4 in figure T-3? Ground Transmitter Antenna Dummy load 8 / 30 How are the transceiver audio input and output connected in a station configured to operate using FT8? To the audio input and output of a computer running WSJT-X software To a computer connected to the FT8converter.com website To an FT8 conversion unit, a keyboard, and a computer monitor To a computer running a terminal program and connected to a terminal node controller unit 9 / 30 How may amateurs use the 219 to 220 MHz segment of 1.25 meter band? Emergency traffic only Fast-scan television only Fixed digital message forwarding systems only Spread spectrum only 10 / 30 What is a relay? An inverting amplifier An electrically-controlled switch A current controlled amplifier A pass transistor 11 / 30 What frequency range is referred to as HF? 30 to 300 MHz 300 to 3000 MHz 300 to 3000 kHz 3 to 30 MHz 12 / 30 Which of the following actions should you take if a neighbor tells you that your station's transmissions are interfering with their radio or TV reception? Immediately turn off your transmitter and contact the nearest FCC office for assistance Make sure that your station is functioning properly and that it does not cause interference to your own radio or television when it is tuned to the same channel Install a harmonic doubler on the output of your transmitter and tune it until the interference is eliminated All these choices are correct 13 / 30 What is the maximum peak envelope power output for Technician class operators in their HF band segments? 50 watts 200 watts 10 watts 100 watts 14 / 30 What property of a radio wave defines its polarization? The orientation of the magnetic field The ratio of the velocity to the wavelength The ratio of the energy in the magnetic field to the energy in the electric field The orientation of the electric field 15 / 30 Which instrument would you use to measure electric potential? An ammeter A voltmeter A wavemeter An ohmmeter 16 / 30 Who does the FCC presume to be the control operator of an amateur station, unless documentation to the contrary is in the station records? The station custodian The person operating the station equipment The third party participant The station licensee 17 / 30 Which sideband is normally used for 10 meter HF, VHF, and UHF single-sideband communications? Inverted sideband Upper sideband Suppressed sideband Lower sideband 18 / 30 What signals are used in a computer-radio interface for digital mode operation? Antenna and RF power NMEA GPS location and DC power Receive and transmit mode, status, and location Receive audio, transmit audio, and transmitter keying 19 / 30 What does the term "traffic" refer to in net operation? Operation by mobile or portable stations Messages exchanged by net stations The number of stations checking in and out of a net Requests to activate the net by a served agency 20 / 30 What is a "talkgroup" on a DMR repeater? A net that meets at a specified time A group of operators sharing common interests A protocol that increases the signal-to-noise ratio when multiple repeaters are linked together A way for groups of users to share a channel at different times without hearing other users on the channel 21 / 30 What is impedance? The opposition to AC current flow The inverse of resistance The power handling capability of a component The Q or Quality Factor of a component 22 / 30 Which Q signal indicates that you are changing frequency? QRZ QSL QRU QSY 23 / 30 Which of the following describes a linked repeater network? A single repeater with more than one receiver A system of repeaters linked by APRS A network of repeaters in which signals received by one repeater are transmitted by all the repeaters in the network Multiple repeaters with the same control operator 24 / 30 Which of the following is a safety hazard of a 12-volt storage battery? All these choices are correct RF emissions from a nearby transmitter can cause the electrolyte to emit poison gas Touching both terminals with the hands can cause electrical shock Shorting the terminals can cause burns, fire, or an explosion 25 / 30 Why should a 5-ampere fuse never be replaced with a 20-ampere fuse? All these choices are correct Excessive current could cause a fire The larger fuse would be likely to blow because it is rated for higher current The power supply ripple would greatly increase 26 / 30 Are amateur station control operators ever permitted to operate outside the frequency privileges of their license class? No Yes, but only when part of a FEMA emergency plan Yes, but only when part of a RACES emergency plan Yes, but only in situations involving the immediate safety of human life or protection of property 27 / 30 Which agency regulates and enforces the rules for the Amateur Radio Service in the United States? All these choices are correct Homeland Security FEMA The FCC 28 / 30 Which of the following battery chemistries is rechargeable? Lithium-ion Nickel-metal hydride All these choices are correct Lead-acid 29 / 30 What is an appropriate way to call another station on a repeater if you know the other station's call sign? Say "break, break," then say the station's call sign Wait for the station to call CQ, then answer Say "CQ" three times, then the other station's call sign Say the station's call sign, then identify with your call sign 30 / 30 What is CW? Another name for a Morse code transmission A digital mode used primarily on 2 meter FM A technique for coil winding A type of electromagnetic propagation Your score is 0% Restart quiz
