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US Amateur Radio - General 2007 Practice Test

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1. - G1A09

Which of the following frequencies is within the General Class portion of the 80 meter band?

SelectAnswer
A1855 kHz
B3560 kHz
C2560 kHz
D3650 kHz

2. - G1B06

When is an amateur station permitted to transmit secret codes?

SelectAnswer
AOnly when the information is of a routine, personal nature
BTo control a space station
COnly with Special Temporary Authorization from the FCC
DDuring a declared communications emergency

3. - G1C11

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 6 and 2 meter bands?

SelectAnswer
A1200 baud
B56 kilobaud
C300 baud
D19.6 kilobaud

4. - G1D01

What is the proper way to identify when transmitting on General class frequencies if you have a CSCE for the required elements but your upgrade from Technician has not appeared in the ULS database?

SelectAnswer
AGive your call sign followed by the words "temporary AG"
BGive your call sign followed the abbreviation "CSCE"
CNo special identification is needed, since your license upgrade would already be shown in the FCC's database
DGive your call sign followed by the words "General class"

5. - G1E08

Which of the following is a requirement for a non-licensed person to communicate with a foreign amateur radio station from a US amateur station at which a licensed control operator is present?

SelectAnswer
AThe foreign amateur station must be in a country with which the United States has a third party agreement
BInformation must be exchanged in English
CAll of these answers are correct
DThe control operator must have at least a General class license

6. - G2A05

Which mode of voice communication is most commonly used on the High Frequency Amateur bands?

SelectAnswer
ASSB
BFM
CAM
DPM

7. - G2B10

What should you do to comply with good amateur practice when choosing a frequency for radio-teletype (RTTY) operation?

SelectAnswer
ACall CQ in Morse code before attempting to establish a contact in RTTY
BFollow generally accepted band plans for RTTY operation
CSelect a frequency in the lower end of the phone band
DSelect a frequency in the upper end of the phone band

8. - G2C01

When normal communications systems are not available, what means may an amateur station use to provide essential communications when there is an immediate threat to the safety of human life or the protection of property?

SelectAnswer
AAny means, but only to RACES recognized emergency stations
BOnly transmissions sent on internationally recognized emergency channels
COnly those means of radiocommunication for which the station is licensed
DAny means of radiocommunication at its disposal

9. - G2D03

What skills learned during "Fox Hunts" are of help to the Amateur Auxiliary?

SelectAnswer
ADirection-finding skills used to locate stations violating FCC Rules
BHunters have an opportunity to transmit on non-amateur frequencies
CIdentification of out of band operation
DIdentification of different call signs

10. - G2E10

What is a major advantage of MFSK16 compared to other digital modes?

SelectAnswer
AIt has built-in error correction
BIt offers good performance in weak signal environment without error correction
CIt is much higher speed than RTTY
DIt is much narrower bandwidth than most digital modes

11. - G2F11

What does the Q signal "QRV" mean when operating CW?

SelectAnswer
AI am quitting for the day
BThere is interference on the frequency
CI am ready to receive messages
DYou are sending too fast

12. - G3A15

How long does it take charged particles from Coronal Mass Ejections to affect radio- wave propagation on the Earth?

SelectAnswer
A14 days
BThe effect is instantaneous
C20 to 40 hours
D28 days

13. - G3B05

What usually happens to radio waves with frequencies below the maximum usable frequency (MUF) when they are sent into the ionosphere?

SelectAnswer
AThey are bent back to the Earth
BThey are completely absorbed by the ionosphere
CThey pass through the ionosphere
DThey are bent and trapped in the ionosphere to circle the Earth

14. - G3C05

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

SelectAnswer
AThe F layer absorbs these frequencies during daylight hours
BThe D layer absorbs these frequencies during daylight hours
CThe E layer is unstable during daylight hours
DThe F layer is unstable during daylight hours

15. - G4A04

Which of the following is an advantage of a receiver IF filter created with a DSP as compared to an analog filter?

SelectAnswer
AMixing products are greatly reduced
BThe DSP filter is much more effective at VHF frequencies
CA wide range of filter bandwidths and shapes can be created
DFewer digital components are required

16. - G4B15

Which of the following can be measured with a directional wattmeter?

SelectAnswer
AAntenna front-to-back ratio
BStanding Wave Ratio
CRF interference
DRadio wave propagation

17. - G4C07

What is one good way to avoid stray RF energy in an amateur station?

SelectAnswer
AUse a ground loop for best conductivity
BKeep the station's ground wire as short as possible
CInstall a few ferrite beads on the ground wire where it connects to your station
DInstall an RF filter in series with the ground wire

18. - G4D04

What does an S-meter measure?

SelectAnswer
AImpedance
BReceived signal strength
CTransmitter power output
DConductance

19. - G4E11

Which of the following is a disadvantage to using wind power as the primary source of power for an emergency station?

SelectAnswer
AThe voltage and current ratings of such systems are not compatible with amateur equipment
BThe conversion efficiency from mechanical energy to electrical energy is less that 2 percent
CAll of these choices are correct
DA large energy storage system is needed to supply power when the wind is not blowing

20. - G5A12

What is one reason to use an impedance matching transformer?

SelectAnswer
ATo minimize SWR at the antenna
BTo maximize the transfer of power
CTo reduce power dissipation in the transmitter
DTo minimize SWR in the transmission line

21. - G5B08

What is the peak-to-peak voltage of a sine wave that has an RMS voltage of 120 volts?

SelectAnswer
A339.4 volts
B169.7 volts
C84.8 volts
D240.0 volts

22. - G5C16

What component should be added to an existing resistor in a circuit to increase circuit resistance?

SelectAnswer
AA capacitor in parallel
BA resistor in parallel
CA resistor in series
DA capacitor in series

23. - G6A04

Which of the following is an advantage of an electrolytic capacitor?

SelectAnswer
AHigh capacitance for given volume
BNon-polarized
CTight tolerance
DInexpensive RF capacitor

24. - G6B15

When is it acceptable to recharge a carbon-zinc primary cell?

SelectAnswer
AWhen a constant current charger is used
BAs long as the voltage has not been allowed to drop below 1.0 volt
CNever
DWhen the cell is kept warm during the recharging period

25. - G6C01

Which of the following is most often provided as an analog integrated circuit?

SelectAnswer
ALinear voltage regulator
BNAND Gate
CFrequency Counter
DGallium Arsenide UHF Receiver "front end" Amplifier

26. - G7A12

What type of receiver is suitable for CW and SSB reception but does not require a mixer stage or an IF amplifier?

SelectAnswer
AA TRF receiver
BA direct conversion receiver
CA super-heterodyne receiver
DA super-regenerative receiver

27. - G7B05

How many states are there in a 3-bit binary counter?

SelectAnswer
A8
B16
C3
D6

28. - G8A11

What happens to the RF carrier signal when a modulating audio signal is applied to an FM transmitter?

SelectAnswer
AThe carrier frequency changes proportionally to the instantaneous amplitude of the modulating signal
BThe carrier phase changes proportionally to the instantaneous amplitude of the modulating signal
CThe carrier frequency changes proportionally to the amplitude and frequency of the modulating signal
DThe carrier amplitude changes proportionally to the instantaneous frequency of the modulating signal

29. - G8B08

How is frequency shift related to keying speed in an FSK signal?

SelectAnswer
AThe frequency shift must not exceed 15 Hz per WPM of keying speed
BThe frequency shift in hertz must be at least four times the keying speed in WPM
CGreater keying speeds require greater frequency shifts
DGreater keying speeds require smaller frequency shifts

30. - G9A13

What would be the SWR if you feed a folded dipole antenna that has a 300-ohm feed- point impedance with 50-ohm coaxial cable?

SelectAnswer
AYou cannot determine SWR from impedance values
B1.5:1
C6:1
D3:1

31. - G9B01

What is one disadvantage of a directly fed random-wire antenna?

SelectAnswer
AIt is not effective on the higher HF bands
BIt produces only vertically polarized radiation
CYou may experience RF burns when touching metal objects in your station
DIt must be longer than 1 wavelength

32. - G9C04

Which statement about a Yagi antenna is true?

SelectAnswer
AThe director is normally the longest parasitic element
BThe reflector is normally the shortest parasitic element
CThe reflector is normally the longest parasitic element
DAll of the elements must be the same length

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

SelectAnswer
AThey must be used with an antenna tuner
BThey have poor harmonic rejection
CThey must be fed with open wire line
DThey present low impedance on all design frequencies

34. - G0A01

What is one way that RF energy can affect human body tissue?

SelectAnswer
AIt cools body tissue
BIt causes radiation poisoning
CIt heats body tissue
DIt causes the blood count to reach a dangerously low level

35. - G0B05

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?

SelectAnswer
ACurrent flowing from the hot wire to the neutral wire
BAll of these choices are correct
CCurrent flowing from the hot wire to ground
DOver-voltage on the hot wire