Practice Exam

G9C06

1. What configuration of the loops of a two-element quad antenna must be used for the antenna to operate as a beam antenna, assuming one of the elements is used as a reflector?

• A. The driven element must be fed with a balun transformer
• B. The reflector element must be approximately 5 percent shorter than the driven element
• C. There must be an open circuit in the driven element at the point opposite the feed point
• D. The reflector element must be approximately 5 percent longer than the driven element

G8B01

2. Which mixer input is varied or tuned to convert signals of different frequencies to an intermediate frequency (IF)?

• A. Beat frequency oscillator
• B. RF input
• C. Local oscillator
• D. Image frequency

G7B04

3. Which of the following describes the function of a two input NOR gate?

• A. Output is high only when both inputs are high
• B. Output is low only when both inputs are high
• C. Output is low when either or both inputs are high
• D. Output is high when either or both inputs are low

G5A01

4. What is impedance?

• A. The inverse of resistance
• B. The force of repulsion between two similar electric fields
• C. The electric charge stored by a capacitor
• D. The opposition to the flow of current in an AC circuit

G4B13

5. What is a use for an antenna analyzer other than measuring the SWR of an antenna system?

• A. Measuring the turns ratio of a power transformer
• B. Measuring the front-to-back ratio of an antenna
• C. Determining the impedance of coaxial cable
• D. Determining the gain of a directional antenna

G0B05

6. Which of the following conditions will cause a Ground Fault Circuit Interrupter (GFCI) to disconnect the 120 or 240 Volt AC line power to a device?

• A. Current flowing from one or more of the voltage-carrying wires directly to ground
• B. Current flowing from one or more of the voltage-carrying wires to the neutral wire
• C. All these choices are correct
• D. Overvoltage on the voltage-carrying wires

G3B09

7. What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the F2 region?

• A. 12,000 miles
• B. 2,500 miles
• C. 1,200 miles
• D. 180 miles

G9D10

8. In which direction or directions does an electrically small loop (less than 1/3 wavelength in circumference) have nulls in its radiation pattern?

• A. In the plane of the loop
• B. Electrically small loops are omnidirectional
• C. Broadside and in the plane of the loop
• D. Broadside to the loop

G5B02

9. How does the total current relate to the individual currents in each branch of a purely resistive parallel circuit?

• A. It equals the sum of the currents through each branch
• B. It equals the average of each branch current
• C. It decreases as more parallel branches are added to the circuit
• D. It is the sum of the reciprocal of each individual voltage drop

G2E01

10. Which mode is normally used when sending RTTY signals via AFSK with an SSB transmitter?

• A. LSB
• B. USB
• C. DSB
• D. CW

G9A07

11. What must be done to prevent standing waves on an antenna feed line?

• A. The antenna feed point must be at DC ground potential
• B. The feed line must be cut to a length equal to an even number of physical half wavelengths
• C. The feed line must be cut to a length equal to an odd number of electrical quarter wavelengths
• D. The antenna feed point impedance must be matched to the characteristic impedance of the feed line

G8A01

12. How is an FSK signal generated?

• A. By keying an FM transmitter with a sub-audible tone
• B. By reconfiguring the CW keying input to act as a tone generator
• C. By changing an oscillator's frequency directly with a digital control signal
• D. By using a transceiver's computer data interface protocol to change frequencies

G4C02

13. Which of the following could be a cause of interference covering a wide range of frequencies?

• A. Arcing at a poor electrical connection
• B. Lack of rectification of the transmitter's signal in power conductors
• C. Not using a balun or line isolator to feed balanced antennas
• D. Using a balun to feed an unbalanced antenna

G7C07

14. What is the simplest combination of stages that implement a superheterodyne receiver?

• A. HF oscillator, mixer, detector
• B. RF amplifier, detector, audio amplifier
• C. RF amplifier, mixer, IF discriminator
• D. HF oscillator, prescaler, audio amplifier

G2D02

15. Which of the following are objectives of the Volunteer Monitoring Program?

• A. To encourage amateur radio operators to self-regulate and comply with the rules
• B. To conduct efficient and orderly amateur licensing examinations
• C. To provide emergency and public safety communications
• D. To coordinate repeaters for efficient and orderly spectrum usage

G4E04

16. Why is it best NOT to draw the DC power for a 100 watt HF transceiver from a vehicle's auxiliary power socket?

• A. Drawing more than 50 watts from this socket could cause the engine to overheat
• B. The DC polarity of the socket is reversed from the polarity of modern HF transceivers
• C. The socket is not wired with an RF-shielded power cable
• D. The socket's wiring may be inadequate for the current drawn by the transceiver

G1C01

17. What is the maximum transmitting power an amateur station may use on 10.140 MHz?

• A. 200 watts PEP output
• B. 1500 watts PEP output
• C. 1000 watts PEP output
• D. 2000 watts PEP output

G1B08

18. When choosing a transmitting frequency, what should you do to comply with good amateur practice?

• A. Monitor the frequency before transmitting
• B. Follow generally accepted band plans agreed to by the Amateur Radio community
• C. Ensure that the frequency and mode selected are within your license class privileges
• D. All these choices are correct

G2A08

19. What is the recommended way to break in to a phone contact?

• A. Say "CQ" followed by the call sign of either station
• B. Say your call sign once
• C. Say "Breaker Breaker"
• D. Say "QRZ" several times, followed by your call sign

G1E09

20. Under what circumstances are messages that are sent via digital modes exempt from Part 97 third-party rules that apply to other modes of communication?

• A. When messages are not encrypted
• B. When messages are encrypted
• C. When under automatic control
• D. Under no circumstances

G8C06

21. What action results from a failure to exchange information due to excessive transmission attempts when using PACTOR or WINMOR?

• A. Encoding reverts to the default character set
• B. The checksum overflows
• C. The connection is dropped
• D. Packets will be routed incorrectly

G1D10

22. What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

• A. 12 years
• B. 18 years
• C. 21 years
• D. There is no age limit

G2B07

23. Which of the following complies with good amateur practice when choosing a frequency on which to initiate a call?

• A. All these choices are correct
• B. Follow the voluntary band plan for the operating mode you intend to use
• C. Identify your station by transmitting your call sign at least 3 times
• D. Check to see if the channel is assigned to another station

G0A09

24. What type of instrument can be used to accurately measure an RF field?

• A. An oscilloscope with a high-stability crystal marker generator
• B. An SWR meter with a peak-reading function
• C. A receiver with an S meter
• D. A calibrated field strength meter with a calibrated antenna

G4D04

25. What does an S meter measure?

• A. Impedance
• B. Transmitter power output
• C. Conductance
• D. Received signal strength

G2C11

26. What does the Q signal "QRV" mean?

• A. You are sending too fast
• B. I am ready to receive messages
• C. I am quitting for the day
• D. There is interference on the frequency

G6A06

27. Which of the following is a reason not to use wire-wound resistors in an RF circuit?

• A. The resistor could overheat
• B. The resistor's inductance could make circuit performance unpredictable
• C. The resistor's internal capacitance would detune the circuit
• D. The resistor's tolerance value would not be adequate for such a circuit

G7A07

28. What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?

• A. A sine wave at half the frequency of the AC input
• B. A series of DC pulses at the same frequency as the AC input
• C. A steady DC voltage
• D. A series of DC pulses at twice the frequency of the AC input

G3A08

29. Which of the following effects can a geomagnetic storm have on radio propagation?

• A. Degraded high-latitude HF propagation
• B. Degraded ground wave propagation
• C. Improved high-latitude HF propagation
• D. Improved ground wave propagation

G6B06

30. What kind of device is an integrated circuit operational amplifier?

• A. Programmable Logic
• B. MMIC
• C. Analog
• D. Digital

G5C02

31. What happens if a signal is applied to the secondary winding of a 4:1 voltage step-down transformer instead of the primary winding?

• A. Additional resistance must be added in parallel with the secondary to prevent overload
• B. The output voltage is divided by 4
• C. Additional resistance must be added in series with the primary to prevent overload
• D. The output voltage is multiplied by 4

G4A17

32. What happens as the noise reduction control level in a receiver is increased?

• A. Received frequency may become unstable
• B. Received frequency may shift several kHz
• C. Received signals may become distorted
• D. CW signals may become severely attenuated

G1A01

33. On which HF/MF bands is a General class license holder granted all amateur frequency privileges?

• A. 160 meters, 60 meters, 30 meters, 17 meters, 12 meters, and 10 meters
• B. 160 meters, 80 meters, 40 meters, and 10 meters
• C. 60 meters, 20 meters, 17 meters, and 12 meters
• D. 160 meters, 30 meters, 17 meters, 15 meters, 12 meters, and 10 meters

G9B10

34. What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

• A. 16 feet
• B. 8 feet
• C. 33 feet
• D. 24 feet

G3C05

35. Why is long-distance communication on the 40-meter, 60-meter, 80-meter, and 160-meter bands more difficult during the day?

• A. The D layer absorbs signals at these frequencies during daylight hours
• B. The F layer is unstable during daylight hours
• C. The E layer is unstable during daylight hours
• D. The F layer absorbs signals at these frequencies during daylight hours