Practice Exam

T8A07

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

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

T5A01

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

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

T7B09

3. What should be the first step to resolve non-fiber optic cable TV interference caused by your amateur radio transmission?

• A. Be sure all TV feed line coaxial connectors are installed properly
• B. Add a low-pass filter to the TV antenna input
• C. Add a high-pass filter to the TV antenna input
• D. Add a preamplifier to the TV antenna input

T3A09

4. 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. FM voice is unusable
• C. Digital modes are unusable
• D. Either vertically or horizontally polarized antennas may be used for transmission or reception

T1D07

5. What types of amateur stations can automatically retransmit the signals of other amateur stations?

• A. Beacon, repeater, or space stations
• B. Auxiliary, beacon, or Earth stations
• C. Earth, repeater, or space stations
• D. Repeater, auxiliary, or space stations

T8B03

6. Which of the following are provided by satellite tracking programs?

• A. The apparent frequency of the satellite transmission, including effects of Doppler shift
• B. Maps showing the real-time position of the satellite track over Earth
• C. The time, azimuth, and elevation of the start, maximum altitude, and end of a pass
• D. All these choices are correct

T5B04

7. Which is equal to one microvolt?

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

T4B01

8. What is the effect of excessive microphone gain on SSB transmissions?

• A. All these choices are correct
• B. Frequency instability
• C. Distorted transmitted audio
• D. Increased SWR

T7C02

9. Which of the following is used to determine if an antenna is resonant at the desired operating frequency?

• A. A frequency counter
• B. A VTVM
• C. A Q meter
• D. An antenna analyzer

T7D07

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

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

T6D11

11. Which of the following is a resonant or tuned circuit?

• A. A resistor circuit used for reducing standing wave ratio
• B. An inductor and a capacitor in series or parallel
• C. A linear voltage regulator
• D. A circuit designed to provide high-fidelity audio

T3B07

12. In addition to frequency, which of the following is used to identify amateur radio bands?

• A. Traditional letter/number designators
• B. All these choices are correct
• C. Channel numbers
• D. The approximate wavelength in meters

T9B09

13. What can cause erratic changes in SWR?

• A. Loose connection in the antenna or feed line
• B. Over-modulation
• C. Overload from a strong local station
• D. Local thunderstorm

T1B06

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

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

T4A06

15. What signals are used in a computer-radio interface for digital mode operation?

• A. Receive and transmit mode, status, and location
• B. Antenna and RF power
• C. NMEA GPS location and DC power
• D. Receive audio, transmit audio, and transmitter keying

T5D01

16. 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

T0A09

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

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

T8D02

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

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

T2A04

19. 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 say the station's call sign
• B. Say "CQ" three times, then the other station's call sign
• C. Wait for the station to call CQ, then answer
• D. Say the station's call sign, then identify with your call sign

T6A11

20. Which of the following battery chemistries is not rechargeable?

• A. Nickel-cadmium
• B. Carbon-zinc
• C. Lead-acid
• D. Lithium-ion

T5C04

21. What is the unit of inductance?

• A. The ohm
• B. The henry
• C. The coulomb
• D. The farad

T7A06

22. What device converts the RF input and output of a transceiver to another band?

• A. Low-pass filter
• B. Phase converter
• C. High-pass filter
• D. Transverter

T9A12

23. What is an advantage of a 5/8 wavelength whip antenna for VHF or UHF mobile service?

• A. It has 10 times the power gain of a 1/4 wavelength whip
• B. It radiates at a very high angle
• C. It eliminates distortion caused by reflected signals
• D. It has more gain than a 1/4-wavelength antenna

T2B13

24. What is the purpose of a squelch function?

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

T0B05

25. What is the purpose of a safety wire through a turnbuckle used to tension guy lines?

• A. Prevent loosening of the turnbuckle from vibration
• B. Provide an ability to measure for proper tensioning
• C. Provide a ground path for lightning strikes
• D. Secure the guy line if the turnbuckle breaks

T1C11

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

T8C04

27. Which of the following is good procedure when contacting another station in a contest?

• A. Contact the station twice to be sure that you are in his log
• B. All these choices are correct
• C. Send only the minimum information needed for proper identification and the contest exchange
• D. Sign only the last two letters of your call if there are many other stations calling

T0C06

28. Which of the following is an acceptable method to determine whether your station complies with FCC RF exposure regulations?

• A. All these choices are correct
• B. By calculation based on FCC OET Bulletin 65
• C. By calculation based on computer modeling
• D. By measurement of field strength using calibrated equipment

T6B06

29. How is the cathode lead of a semiconductor diode often marked on the package?

• A. With the letter C
• B. With the word "cathode"
• C. With the letter K
• D. With a stripe

T2C10

30. What information is contained in the preamble of a formal traffic message?

• A. Information needed to track the message
• B. The email address of the originating station
• C. The address of the intended recipient
• D. The telephone number of the addressee

T1E08

31. Which of the following is an example of automatic control?

• A. Using a computer or other device to identify automatically
• B. Repeater operation
• C. Using a computer or other device to send CW automatically
• D. Controlling a station over the internet

T3C08

32. What causes tropospheric ducting?

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

T1A10

33. What is the Radio Amateur Civil Emergency Service (RACES)?

• A. An emergency service using amateur operators certified by a civil defense organization as being enrolled in that organization
• B. A radio service using amateur frequencies for emergency management or civil defense communications
• C. A radio service using amateur stations for emergency management or civil defense communications
• D. All these choices are correct

T6C12

34. Which of the following is accurately represented in electrical schematics?

• A. All these choices are correct
• B. Component connections
• C. Physical appearance of components
• D. Wire lengths

T1F03

35. When are you required to transmit your assigned call sign?

• A. At the beginning of each contact, and every 10 minutes thereafter
• B. At least every 10 minutes during and at the end of a communication
• C. At least once during each transmission
• D. At least every 15 minutes during and at the end of a communication