Practice Exam

T9B05

1. What happens as the frequency of a signal in coaxial cable is increased?

• A. The characteristic impedance decreases
• B. The loss increases
• C. The loss decreases
• D. The characteristic impedance increases

T6A02

2. What type of component is often used as an adjustable volume control?

• A. Potentiometer
• B. Fixed resistor
• C. Power resistor
• D. Transformer

T6B12

3. What are the names of the electrodes of a bipolar junction transistor?

• A. Signal, bias, power
• B. Emitter, base, collector
• C. Pole one, pole two, output
• D. Input, output, supply

T4A02

4. Which of the following should be considered when selecting an accessory SWR meter?

• A. The types of modulation being used at the station
• B. The distance that the meter will be located from the antenna
• C. All these choices are correct
• D. The frequency and power level at which the measurements will be made

T6D07

5. Which of the following is commonly used as a visual indicator?

• A. Zener diode
• B. LED
• C. FET
• D. Bipolar transistor

T8B11

6. Who may receive telemetry from a space station?

• A. A licensed radio amateur with a transmitter equipped for interrogating the satellite
• B. Anyone
• C. A licensed radio amateur who has registered for an access code from AMSAT
• D. A licensed radio amateur who has been certified by the protocol developer

T1D03

7. When is it permissible to transmit messages encoded to obscure their meaning?

• A. Never
• B. Only when transmitting certain approved digital codes
• C. Only when transmitting control commands to space stations or radio control craft
• D. Only during contests

T0B04

8. Which of the following is an important safety precaution to observe when putting up an antenna tower?

• A. Wear a ground strap connected to your wrist at all times
• B. All these choices are correct
• C. Insulate the base of the tower to avoid lightning strikes
• D. Look for and stay clear of any overhead electrical wires

T3B01

9. What is the relationship between the electric and magnetic fields of an electromagnetic wave?

• A. They are at right angles
• B. They are in parallel
• C. They travel at different speeds
• D. They revolve in opposite directions

T2A11

10. What term describes an amateur station that is transmitting and receiving on the same frequency?

• A. Diplex
• B. Full duplex
• C. Multiplex
• D. Simplex

T7A09

11. What is the function of the SSB/CW-FM switch on a VHF power amplifier?

• A. Set the amplifier for proper operation in the selected mode
• B. Change the mode of the transmitted signal
• C. Change the frequency range of the amplifier to operate in the proper segment of the band
• D. Reduce the received signal noise

T8D02

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

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

T5A07

13. Why are metals generally good conductors of electricity?

• A. All these choices are correct
• B. They have many free protons
• C. They have many free electrons
• D. They have relatively high density

T7C07

14. What happens to power lost in a feed line?

• A. It increases the SWR
• B. It is radiated as harmonics
• C. It distorts the signal
• D. It is converted into heat

T0A01

15. Which of the following is a safety hazard of a 12-volt storage battery?

• A. All these choices are correct
• B. Shorting the terminals can cause burns, fire, or an explosion
• C. RF emissions from a nearby transmitter can cause the electrolyte to emit poison gas
• D. Touching both terminals with the hands can cause electrical shock

T9A04

16. What is a disadvantage of the short, flexible antenna supplied with most handheld radio transceivers, compared to a full-sized quarter-wave antenna?

• A. It is mechanically fragile
• B. It has low efficiency
• C. It transmits only circularly polarized signals
• D. All these choices are correct

T5C03

17. What describes the ability to store energy in a magnetic field?

• A. Inductance
• B. Capacitance
• C. Admittance
• D. Resistance

T4B02

18. Which of the following can be used to enter a transceiver's operating frequency?

• A. The Automatic Frequency Control
• B. The CTCSS or DTMF encoder
• C. All these choices are correct
• D. The keypad or VFO knob

T6C03

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

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

T3A09

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

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

T7B04

21. Which of the following could you use to cure distorted audio caused by RF current on the shield of a microphone cable?

• A. Preamplifier
• B. Low-pass filter
• C. Ferrite choke
• D. Band-pass filter

T2B05

22. What would cause your FM transmission audio to be distorted on voice peaks?

• A. You are talking too loudly
• B. Your repeater offset is inverted
• C. Your transmit power is too high
• D. You need to talk louder

T1C11

23. If your license has expired and is still within the allowable grace period, may you continue to transmit on the amateur radio bands?

• A. Yes, as soon as you apply for renewal
• B. Yes, for up to one year
• C. Yes, for up to two years
• D. No, you must wait until the license has been renewed

T5D02

24. What formula is used to calculate voltage in a circuit?

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

T1E10

25. Which of the following is an example of remote control as defined in Part 97?

• A. Operating the station over the internet
• B. Controlling a model aircraft, boat, or car by amateur radio
• C. Repeater operation
• D. All these choices are correct

T8A08

26. What is the approximate bandwidth of a typical single sideband (SSB) voice signal?

• A. 15 kHz
• B. 6 kHz
• C. 1 kHz
• D. 3 kHz

T2C05

27. What does the term "traffic" refer to in net operation?

• A. Operation by mobile or portable stations
• B. Messages exchanged by net stations
• C. The number of stations checking in and out of a net
• D. Requests to activate the net by a served agency

T1F01

28. When must the station and its records be available for FCC inspection?

• A. At any time ten days after notification by the FCC of such an inspection
• B. At any time after written notification by the FCC of such inspection
• C. Only when presented with a valid warrant by an FCC official or government agent
• D. At any time upon request by an FCC representative

T1B06

29. On which HF bands does a Technician class operator have phone privileges?

• A. 10 meter band only
• B. 30 meter band only
• C. 80 meter, 40 meter, 15 meter, and 10 meter bands
• D. None

T8C07

30. What is Voice Over Internet Protocol (VoIP)?

• A. A technique employed to "spot" DX stations via the internet
• B. A set of rules specifying how to identify your station when linked over the internet to another station
• C. A method of delivering voice communications over the internet using digital techniques
• D. A technique for measuring the modulation quality of a transmitter using remote sites monitored via the internet

T7D07

31. Which of the following measurements are made using a multimeter?

• A. Signal strength and noise
• B. Voltage and resistance
• C. All these choices are correct
• D. Impedance and reactance

T3C06

32. What type of propagation is responsible for allowing over-the-horizon VHF and UHF communications to ranges of approximately 300 miles on a regular basis?

• A. Faraday rotation
• B. Tropospheric ducting
• C. D region refraction
• D. F2 region refraction

T0C12

33. How does RF radiation differ from ionizing radiation (radioactivity)?

• A. RF radiation is perfectly safe
• B. RF radiation does not have sufficient energy to cause chemical changes in cells and damage DNA
• C. RF radiation is limited in range to a few feet
• D. RF radiation can only be detected with an RF dosimeter

T1A06

34. What is the FCC Part 97 definition of a beacon?

• A. A continuous transmission of weather information authorized in the amateur bands by the National Weather Service
• B. An amateur station transmitting communications for the purposes of observing propagation or related experimental activities
• C. A government transmitter marking the amateur radio band edges
• D. A bulletin sent by the FCC to announce a national emergency

T5B06

35. Which is equal to 3000 milliamperes?

• A. 0.003 amperes
• B. 0.3 amperes
• C. 3,000,000 amperes
• D. 3 amperes