Practice Exam

T4A04

1. How are the transceiver audio input and output connected in a station configured to operate using FT8?

• A. To the audio input and output of a computer running WSJT-X software
• B. To a computer connected to the FT8converter.com website
• C. To a computer running a terminal program and connected to a terminal node controller unit
• D. To an FT8 conversion unit, a keyboard, and a computer monitor

T2C05

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

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

T9B09

3. What can cause erratic changes in SWR?

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

T1C02

4. Who may select a desired call sign under the vanity call sign rules?

• A. Only a licensed amateur with a General or Amateur Extra Class license
• B. Only a licensed amateur with an Amateur Extra Class license
• C. Any licensed amateur
• D. Only a licensed amateur who has been licensed continuously for more than 10 years

T7D06

5. Which of the following can damage a multimeter?

• A. Failing to connect one of the probes to ground
• B. Attempting to measure resistance using the voltage setting
• C. Attempting to measure voltage when using the resistance setting
• D. Not allowing it to warm up properly

T0B09

6. Why should you avoid attaching an antenna to a utility pole?

• A. The 60 Hz radiations from the feed line may increase the SWR
• B. The antenna could contact high-voltage power lines
• C. The antenna will not work properly because of induced voltages
• D. All these choices are correct

T1B08

7. How are US amateurs restricted in segments of bands where the Amateur Radio Service is secondary?

• A. International communications are not permitted in those segments
• B. U.S. amateurs must give foreign amateur stations priority in those segments
• C. Digital transmissions are not permitted in those segments
• D. U.S. amateurs may find non-amateur stations in those segments, and must avoid interfering with them

T3A02

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

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

T1D04

9. Under what conditions is an amateur station authorized to transmit music using a phone emission?

• A. When the music produces no spurious emissions
• B. When incidental to an authorized retransmission of manned spacecraft communications
• C. When the music is transmitted above 1280 MHz
• D. When transmissions are limited to less than three minutes per hour

T0C04

10. What factors affect the RF exposure of people near an amateur station antenna?

• A. Frequency and power level of the RF field
• B. All these choices are correct
• C. Distance from the antenna to a person
• D. Radiation pattern of the antenna

T7C03

11. What does a dummy load consist of?

• A. A low-voltage power supply and a DC relay
• B. A high-gain amplifier and a TR switch
• C. A 50-ohm reactance used to terminate a transmission line
• D. A non-inductive resistor mounted on a heat sink

T5D12

12. What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?

• A. 8 volts
• B. 12 volts
• C. 0.2 volts
• D. 20 volts

T7A05

13. What is the name of a circuit that generates a signal at a specific frequency?

• A. Low-pass filter
• B. Phase modulator
• C. Reactance modulator
• D. Oscillator

T9A07

14. What is a disadvantage of using a handheld VHF transceiver with a flexible antenna inside a vehicle?

• A. The SWR might decrease, decreasing the signal strength
• B. Signal strength is reduced due to the shielding effect of the vehicle
• C. All these choices are correct
• D. The bandwidth of the antenna will decrease, increasing SWR

T5B02

15. Which is equal to 1,500,000 hertz?

• A. 150 kHz
• B. 15 GHz
• C. 1500 MHz
• D. 1500 kHz

T2A02

16. What is the national calling frequency for FM simplex operations in the 2 meter band?

• A. 146.520 MHz
• B. 446.000 MHz
• C. 145.000 MHz
• D. 432.100 MHz

T8B09

17. What causes spin fading of satellite signals?

• A. Interfering signals within the satellite uplink band
• B. Doppler shift of the received signal
• C. Circular polarized noise interference radiated from the sun
• D. Rotation of the satellite and its antennas

T8C10

18. What is required before using the EchoLink system?

• A. All these choices are correct
• B. Register your call sign and provide proof of license
• C. Complete the required EchoLink training
• D. Purchase a license to use the EchoLink software

T6A08

19. What is the function of an SPDT switch?

• A. Two circuits are opened or closed
• B. A single circuit is opened or closed
• C. A single circuit is switched between one of two other circuits
• D. Two circuits are each switched between one of two other circuits

T5C03

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

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

T6D06

21. What component changes 120 V AC power to a lower AC voltage for other uses?

• A. Variable capacitor
• B. Diode
• C. Transistor
• D. Transformer

T7B11

22. What is a symptom of RF feedback in a transmitter or transceiver?

• A. The transmitter will not stay on the desired frequency
• B. Frequent blowing of power supply fuses
• C. Excessive SWR at the antenna connection
• D. Reports of garbled, distorted, or unintelligible voice transmissions

T4B03

23. How is squelch adjusted so that a weak FM signal can be heard?

• A. Set the squelch threshold so that receiver output audio is on all the time
• B. Enable squelch enhancement
• C. Turn on the anti-squelch function
• D. Turn up the audio level until it overcomes the squelch threshold

T1E05

24. What is an amateur station's control point?

• A. The location of the station's transmitting apparatus
• B. The location of the station's transmitting antenna
• C. The mailing address of the station licensee
• D. The location at which the control operator function is performed

T5A07

25. Why are metals generally good conductors of electricity?

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

T1A05

26. What proves that the FCC has issued an operator/primary license grant?

• A. An email notification from the NCVEC granting the license
• B. A printed copy of the certificate of successful completion of examination
• C. All these choices are correct
• D. The license appears in the FCC ULS database

T6B05

27. What type of transistor has a gate, drain, and source?

• A. Tesla-effect
• B. Bipolar junction
• C. Field-effect
• D. Varistor

T8D13

28. What is FT8?

• A. A digital slow-scan TV mode with forward error correction and automatic color compensation
• B. A digital mode capable of low signal-to-noise operation
• C. An eight channel multiplex mode for FM repeaters
• D. A wideband FM voice mode

T3B09

29. What frequency range is referred to as UHF?

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

T0A10

30. What hazard is caused by charging or discharging a battery too quickly?

• A. Excess output ripple
• B. Half-wave rectification
• C. Overheating or out-gassing
• D. Inverse memory effect

T1F02

31. How often must you identify with your FCC-assigned call sign when using tactical call signs such as "Race Headquarters"?

• A. Once during every hour
• B. Never, the tactical call is sufficient
• C. At the end of each communication and every ten minutes during a communication
• D. At the end of every transmission

T2B08

32. Which of the following applies when two stations transmitting on the same frequency interfere with each other?

• A. The stations should negotiate continued use of the frequency
• B. Use subaudible tones so both stations can share the frequency
• C. Interference is inevitable, so no action is required
• D. Both stations should choose another frequency to avoid conflict

T8A07

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

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

T6C10

34. What is component 3 in figure T-3?

• A. Variable capacitor
• B. Connector
• C. Meter
• D. Variable inductor

T3C10

35. Which of the following bands may provide long-distance communications via the ionosphere's F region during the peak of the sunspot cycle?

• A. 70 centimeters and 1.25 meters
• B. 23 centimeters
• C. All these choices are correct
• D. 6 and 10 meters