Practice Exam

T7D02

1. How is a voltmeter connected to a component to measure applied voltage?

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

T5D03

2. What formula is used to calculate resistance in a circuit?

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

T8D02

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

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

T7B03

4. Which of the following can cause radio frequency interference?

• A. All these choices are correct
• B. Spurious emissions
• C. Harmonics
• D. Fundamental overload

T6C07

5. What is component 8 in figure T-2?

• A. Resistor
• B. Inductor
• C. Regulator IC
• D. Light emitting diode

T1F07

6. Which of the following restrictions apply when a non-licensed person is allowed to speak to a foreign station using a station under the control of a licensed amateur operator?

• A. The person must be a U.S. citizen
• B. All these choices are correct
• C. The foreign station must be in a country with which the U.S. has a third party agreement
• D. The licensed control operator must do the station identification

T8A10

7. What is the approximate bandwidth of AM fast-scan TV transmissions?

• A. About 6 MHz
• B. More than 10 MHz
• C. About 3 MHz
• D. About 1 MHz

T6B10

8. Which of the following can provide power gain?

• A. Resistor
• B. Transformer
• C. Transistor
• D. Reactor

T1A09

9. Who selects a Frequency Coordinator?

• A. The FCC Office of Spectrum Management and Coordination Policy
• B. Amateur operators in a local or regional area whose stations are eligible to be repeater or auxiliary stations
• C. The local chapter of the Office of National Council of Independent Frequency Coordinators
• D. FCC Regional Field Office

T0A12

10. Which of the following precautions should be taken when measuring high voltages with a voltmeter?

• A. Ensure that the voltmeter has very low impedance
• B. Ensure that the voltmeter and leads are rated for use at the voltages to be measured
• C. Ensure that the voltmeter is set to the correct frequency
• D. Ensure that the circuit is grounded through the voltmeter

T7A10

11. What device increases the transmitted output power from a transceiver?

• A. An RF power amplifier
• B. An impedance network
• C. A voltage divider
• D. All these choices are correct

T1C07

12. Which of the following can result in revocation of the station license or suspension of the operator license?

• A. Failure to obtain FCC type acceptance prior to using a home-built transmitter
• B. Failure to inform the FCC of any changes in the amateur station following performance of an RF safety environmental evaluation
• C. Failure to provide and maintain a correct email address with the FCC
• D. Failure to have a copy of your license available at your station

T9B07

13. Which of the following is true of PL-259 type coax connectors?

• A. They are commonly used at HF and VHF frequencies
• B. They are watertight
• C. They are a bayonet-type connector
• D. They are preferred for microwave operation

T5A04

14. What are the units of electrical resistance?

• A. Coulombs
• B. Mhos
• C. Ohms
• D. Siemens

T0C07

15. What hazard is created by touching an antenna during a transmission?

• A. RF burn to skin
• B. Electrocution
• C. Radiation poisoning
• D. All these choices are correct

T5C12

16. What is impedance?

• A. The power handling capability of a component
• B. The Q or Quality Factor of a component
• C. The inverse of resistance
• D. The opposition to AC current flow

T0B01

17. Which of the following is good practice when installing ground wires on a tower for lightning protection?

• A. All these choices are correct
• B. Ensure that connections are short and direct
• C. Put a drip loop in the ground connection to prevent water damage to the ground system
• D. Make sure all ground wire bends are right angles

T2A07

18. What is meant by "repeater offset"?

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

T2C11

19. What is meant by "check" in a radiogram header?

• A. A list of stations that have relayed the message
• B. The call sign of the originating station
• C. The number of words or word equivalents in the text portion of the message
• D. A box on the message form that indicates that the message was received and/or relayed

T5B09

20. Which decibel value most closely represents a power increase from 5 watts to 10 watts?

• A. 3 dB
• B. 2 dB
• C. 10 dB
• D. 5 dB

T8B04

21. What mode of transmission is commonly used by amateur radio satellites?

• A. FM
• B. CW/data
• C. SSB
• D. All these choices are correct

T1E01

22. When may an amateur station transmit without a control operator?

• A. When the transmitting station is an auxiliary station
• B. Never
• C. When the station licensee is away and another licensed amateur is using the station
• D. When using automatic control, such as in the case of a repeater

T7C11

23. What is a disadvantage of air core coaxial cable when compared to foam or solid dielectric types?

• A. It cannot be used for VHF or UHF antennas
• B. It requires special techniques to prevent moisture in the cable
• C. It has more loss per foot
• D. It cannot be used at below freezing temperatures

T6A06

24. What type of electrical component stores energy in a magnetic field?

• A. Diode
• B. Capacitor
• C. Inductor
• D. Varistor

T4B07

25. What does a DMR "code plug" contain?

• A. The DMR software version
• B. The codec for digitizing audio
• C. Access information for repeaters and talkgroups
• D. Your call sign in CW for automatic identification

T1D09

26. When may amateur stations transmit information in support of broadcasting, program production, or news gathering, assuming no other means is available?

• A. When such communications are directly related to the immediate safety of human life or protection of property
• B. Never
• C. When broadcasting communications to or from the space shuttle
• D. Where noncommercial programming is gathered and supplied exclusively to the National Public Radio network

T8C03

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

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

T2B06

28. What type of signaling uses pairs of audio tones?

• A. D-STAR
• B. GPRS
• C. CTCSS
• D. DTMF

T1B09

29. 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. To allow for calibration error in the transmitter frequency display
• D. So that modulation sidebands do not extend beyond the band edge

T4A05

30. Where should an RF power meter be installed?

• A. At the power supply output
• B. In parallel with the push-to-talk line and the antenna
• C. In the power supply cable, as close as possible to the radio
• D. In the feed line, between the transmitter and antenna

T6D02

31. What is a relay?

• A. An electrically-controlled switch
• B. A pass transistor
• C. A current controlled amplifier
• D. An inverting amplifier

T9A10

32. In which direction does a half-wave dipole antenna radiate the strongest signal?

• A. In the direction of the feed line
• B. Equally in all directions
• C. Broadside to the antenna
• D. Off the ends of the antenna

T3C01

33. Why are simplex UHF signals rarely heard beyond their radio horizon?

• A. UHF signals are absorbed by the ionospheric D region
• B. They are too weak to go very far
• C. UHF signals are usually not propagated by the ionosphere
• D. FCC regulations prohibit them from going more than 50 miles

T3A09

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

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

T3B08

35. What frequency range is referred to as VHF?

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