Practice Exam

T0A09

1. What should be done to all external ground rods or earth connections?

• A. Bond them together with heavy wire or conductive strap
• B. Waterproof them with silicone caulk or electrical tape
• C. Tune them for resonance on the lowest frequency of operation
• D. Keep them as far apart as possible

T7A08

2. Which of the following describes combining speech with an RF carrier signal?

• A. Oscillation
• B. Low-pass filtering
• C. Impedance matching
• D. Modulation

T8D02

3. What is a "talkgroup" on a DMR repeater?

• A. A net that meets at a specified time
• B. A group of operators sharing common interests
• C. A protocol that increases the signal-to-noise ratio when multiple repeaters are linked together
• D. A way for groups of users to share a channel at different times without hearing other users on the channel

T2C07

4. 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

T3B09

5. What frequency range is referred to as UHF?

• A. 30 to 300 kHz
• B. 300 to 3000 MHz
• C. 30 to 300 MHz
• D. 300 to 3000 kHz

T5D01

6. What formula is used to calculate current in a circuit?

• A. I = E / R
• B. I = E - R
• C. I = E * R
• D. I = E + R

T9B01

7. What is a benefit of low SWR?

• A. Reduced signal loss
• B. Less antenna wear
• C. Reduced television interference
• D. All these choices are correct

T5C10

8. How much power is delivered by a voltage of 12 volts DC and a current of 2.5 amperes?

• A. 30 watts
• B. 14.5 watts
• C. 4.8 watts
• D. 0.208 watts

T1D11

9. When may an amateur station transmit without identifying on the air?

• A. When transmitting signals to control model craft
• B. When the transmissions are of a brief nature to make station adjustments
• C. When the transmissions are unmodulated
• D. When the transmitted power level is below 1 watt

T6C03

10. What is component 2 in figure T-1?

• A. Connector
• B. Indicator lamp
• C. Transistor
• D. Resistor

T7C03

11. What does a dummy load consist of?

• A. A high-gain amplifier and a TR switch
• B. A 50-ohm reactance used to terminate a transmission line
• C. A low-voltage power supply and a DC relay
• D. A non-inductive resistor mounted on a heat sink

T4B09

12. How is a specific group of stations selected on a digital voice transceiver?

• A. By entering the group's identification code
• B. By activating automatic identification
• C. By enabling the group's CTCSS tone
• D. By retrieving the frequencies from transceiver memory

T1C05

13. Which of the following is a valid Technician class call sign format?

• A. KF1XXX
• B. All these choices are correct
• C. W1XX
• D. KA1X

T9A06

14. Which of the following types of antenna offers the greatest gain?

• A. J pole
• B. Yagi
• C. 5/8 wave vertical
• D. Isotropic

T1F05

15. What method of call sign identification is required for a station transmitting phone signals?

• A. Send the call sign using a CW or phone emission
• B. Send the call sign followed by the indicator R
• C. Send the call sign followed by the indicator RPT
• D. Send the call sign using only a phone emission

T8C03

16. What operating activity involves contacting as many stations as possible during a specified period?

• A. Simulated emergency exercises
• B. Public service events
• C. Contesting
• D. Net operations

T3C08

17. What causes tropospheric ducting?

• A. Updrafts from hurricanes and tornadoes
• B. Sunspots and solar flares
• C. Temperature inversions in the atmosphere
• D. Discharges of lightning during electrical storms

T5B03

18. Which is equal to one kilovolt?

• A. One thousand volts
• B. One one-thousandth of a volt
• C. One million volts
• D. One hundred volts

T4A08

19. Which of the following conductors is preferred for bonding at RF?

• A. Steel wire
• B. Twisted-pair cable
• C. Flat copper strap
• D. Copper braid removed from coaxial cable

T5A01

20. Electrical current is measured in which of the following units?

• A. Ohms
• B. Watts
• C. Volts
• D. Amperes

T8B10

21. What is a LEO satellite?

• A. A highly elliptical orbit satellite
• B. A sun synchronous satellite
• C. A satellite in low energy operation mode
• D. A satellite in low earth orbit

T0C10

22. Why is duty cycle one of the factors used to determine safe RF radiation exposure levels?

• A. It takes into account the antenna feed line loss
• B. It affects the average exposure to radiation
• C. It affects the peak exposure to radiation
• D. It takes into account the thermal effects of the final amplifier

T8A07

23. What is a characteristic of single sideband (SSB) compared to FM?

• A. SSB signals are easier to tune in correctly
• B. SSB signals are less susceptible to interference
• C. All these choices are correct
• D. SSB signals have narrower bandwidth

T3A09

24. Which of the following results from the fact that signals propagated by the ionosphere are elliptically polarized?

• A. Digital modes are unusable
• B. FM voice is unusable
• C. Both the transmitting and receiving antennas must be of the same polarization
• D. Either vertically or horizontally polarized antennas may be used for transmission or reception

T6D06

25. What component changes 120 V AC power to a lower AC voltage for other uses?

• A. Transformer
• B. Diode
• C. Variable capacitor
• D. Transistor

T1E03

26. Who must designate the station control operator?

• A. The station licensee
• B. The frequency coordinator
• C. Any licensed operator
• D. The FCC

T1B09

27. Why should you not set your transmit frequency to be exactly at the edge of an amateur band or sub-band?

• A. To allow for transmitter frequency drift
• B. All these choices are correct
• C. So that modulation sidebands do not extend beyond the band edge
• D. To allow for calibration error in the transmitter frequency display

T7B05

28. How can fundamental overload of a non-amateur radio or TV receiver by an amateur signal be reduced or eliminated?

• A. Block the amateur signal with a filter at the antenna input of the affected receiver
• B. Switch the transmitter from FM to SSB
• C. Switch the transmitter to a narrow-band mode
• D. Block the interfering signal with a filter on the amateur transmitter

T0B09

29. Why should you avoid attaching an antenna to a utility pole?

• A. The antenna will not work properly because of induced voltages
• B. The antenna could contact high-voltage power lines
• C. The 60 Hz radiations from the feed line may increase the SWR
• D. All these choices are correct

T6A03

30. What electrical parameter is controlled by a potentiometer?

• A. Field strength
• B. Resistance
• C. Capacitance
• D. Inductance

T2B13

31. What is the purpose of a squelch function?

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

T2A07

32. What is meant by "repeater offset"?

• A. The number of simultaneous transmit frequencies used by a repeater
• B. The repeater has a time delay to prevent interference
• C. The difference between a repeater's transmit and receive frequencies
• D. The repeater station identification is done on a separate frequency

T1A01

33. Which of the following is part of the Basis and Purpose of the Amateur Radio Service?

• A. Advancing skills in the technical and communication phases of the radio art
• B. All these choices are correct
• C. Providing personal radio communications for as many citizens as possible
• D. Providing communications for international non-profit organizations

T6B01

34. Which is true about forward voltage drop in a diode?

• A. It is lower in some diode types than in others
• B. It indicates that the diode is defective
• C. It has no impact on the voltage delivered to the load
• D. It is proportional to peak inverse voltage

T7D03

35. When configured to measure current, how is a multimeter connected to a component?

• A. In quadrature
• B. In series
• C. In parallel
• D. In phase