Practice Exam

T8B07

1. What is Doppler shift in reference to satellite communications?

• A. A mode where the satellite receives signals on one band and transmits on another
• B. A change in the satellite orbit
• C. An observed change in signal frequency caused by relative motion between the satellite and Earth station
• D. A special digital communications mode for some satellites

T0A12

2. 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 is set to the correct frequency
• C. Ensure that the voltmeter and leads are rated for use at the voltages to be measured
• D. Ensure that the circuit is grounded through the voltmeter

T1D07

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

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

T8D06

4. What does the abbreviation "PSK" mean?

• A. Phased Slide Keying
• B. Phase Shift Keying
• C. Packet Short Keying
• D. Pulse Shift Keying

T7B06

5. 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?

• A. Install a harmonic doubler on the output of your transmitter and tune it until the interference is eliminated
• B. All these choices are correct
• C. 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
• D. Immediately turn off your transmitter and contact the nearest FCC office for assistance

T7C05

6. Why do most solid-state transmitters reduce output power as SWR increases beyond a certain level?

• A. To protect the output amplifier transistors
• B. To comply with FCC rules on spectral purity
• C. Because power supplies cannot supply enough current at high SWR
• D. To lower the SWR on the transmission line

T2A08

7. What is the meaning of the procedural signal "CQ"?

• A. Call on the quarter hour
• B. Only the called station should transmit
• C. Test transmission, no reply expected
• D. Calling any station

T6C02

8. What is component 1 in figure T-1?

• A. Connector
• B. Resistor
• C. Transistor
• D. Battery

T8C05

9. What is a grid locator?

• A. A letter-number designator assigned to a geographic location
• B. A letter-number designator assigned to an azimuth and elevation
• C. An instrument for radio direction finding
• D. An instrument for neutralizing a final amplifier

T3A02

10. What is the effect of vegetation on UHF and microwave signals?

• A. Absorption
• B. Polarization rotation
• C. Knife-edge diffraction
• D. Amplification

T1C08

11. What is the normal term for an FCC-issued amateur radio license?

• A. Five years
• B. Ten years
• C. Eight years
• D. Life

T9B07

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

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

T4B06

13. Which of the following controls could be used if the voice pitch of a single-sideband signal returning to your CQ call seems too high or low?

• A. The AGC or limiter
• B. The bandwidth selection
• C. The tone squelch
• D. The RIT or Clarifier

T3C05

14. Which of the following effects may allow radio signals to travel beyond obstructions between the transmitting and receiving stations?

• A. Knife-edge diffraction
• B. Faraday rotation
• C. Quantum tunneling
• D. Doppler shift

T5D11

15. What is the voltage across a 10-ohm resistor if a current of 1 ampere flows through it?

• A. 1 volt
• B. 10 volts
• C. 9 volts
• D. 11 volts

T6A02

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

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

T1A03

17. What do the FCC rules state regarding the use of a phonetic alphabet for station identification in the Amateur Radio Service?

• A. It is required when transmitting emergency messages
• B. All these choices are correct
• C. It is encouraged
• D. It is required when in contact with foreign stations

T6B04

18. Which of the following components can consist of three regions of semiconductor material?

• A. Transistor
• B. Alternator
• C. Triode
• D. Pentagrid converter

T0B04

19. 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

T5B04

20. Which is equal to one microvolt?

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

T1F05

21. 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

T6D01

22. Which of the following devices or circuits changes an alternating current into a varying direct current signal?

• A. Amplifier
• B. Transformer
• C. Reflector
• D. Rectifier

T7A01

23. Which term describes the ability of a receiver to detect the presence of a signal?

• A. Linearity
• B. Total Harmonic Distortion
• C. Selectivity
• D. Sensitivity

T1E03

24. Who must designate the station control operator?

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

T9A11

25. What is antenna gain?

• A. The additional power that is required in the antenna when transmitting on a higher frequency
• B. The additional power that is added to the transmitter power
• C. The increase in signal strength in a specified direction compared to a reference antenna
• D. The increase in impedance on receive or transmit compared to a reference antenna

T1B12

26. Except for some specific restrictions, what is the maximum peak envelope power output for Technician class operators using frequencies above 30 MHz?

• A. 100 watts
• B. 1500 watts
• C. 50 watts
• D. 500 watts

T5A01

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

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

T5C07

28. What is the abbreviation for megahertz?

• A. MHz
• B. mh
• C. MH
• D. Mhz

T3B05

29. What is the relationship between wavelength and frequency?

• A. Wavelength gets shorter as frequency increases
• B. Wavelength and frequency are unrelated
• C. Wavelength and frequency increase as path length increases
• D. Wavelength gets longer as frequency increases

T2C10

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

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

T4A02

31. 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 frequency and power level at which the measurements will be made
• C. All these choices are correct
• D. The distance that the meter will be located from the antenna

T8A04

32. Which type of modulation is commonly used for VHF and UHF voice repeaters?

• A. SSB
• B. FM or PM
• C. PSK
• D. AM

T0C03

33. How does the allowable power density for RF safety change if duty cycle changes from 100 percent to 50 percent?

• A. It decreases by 50 percent
• B. It increases by a factor of 2
• C. It increases by a factor of 3
• D. There is no adjustment allowed for lower duty cycle

T7D07

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

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

T2B09

35. Why are simplex channels designated in the VHF/UHF band plans?

• A. For contest operation
• B. So stations with simple transmitters can access the repeater without automated offset
• C. So stations within range of each other can communicate without tying up a repeater
• D. For working DX only