US Amateur Radio - General 2007 Practice Test

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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?

Select	Answer
A	1855 kHz
B	3560 kHz
C	2560 kHz
D	3650 kHz

2. - G1B06

When is an amateur station permitted to transmit secret codes?

Select	Answer
A	Only when the information is of a routine, personal nature
B	To control a space station
C	Only with Special Temporary Authorization from the FCC
D	During 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?

Select	Answer
A	1200 baud
B	56 kilobaud
C	300 baud
D	19.6 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?

Select	Answer
A	Give your call sign followed by the words "temporary AG"
B	Give your call sign followed the abbreviation "CSCE"
C	No special identification is needed, since your license upgrade would already be shown in the FCC's database
D	Give 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?

Select	Answer
A	The foreign amateur station must be in a country with which the United States has a third party agreement
B	Information must be exchanged in English
C	All of these answers are correct
D	The 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?

Select	Answer
A	SSB
B	FM
C	AM
D	PM

7. - G2B10

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

Select	Answer
A	Call CQ in Morse code before attempting to establish a contact in RTTY
B	Follow generally accepted band plans for RTTY operation
C	Select a frequency in the lower end of the phone band
D	Select 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?

Select	Answer
A	Any means, but only to RACES recognized emergency stations
B	Only transmissions sent on internationally recognized emergency channels
C	Only those means of radiocommunication for which the station is licensed
D	Any means of radiocommunication at its disposal

9. - G2D03

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

Select	Answer
A	Direction-finding skills used to locate stations violating FCC Rules
B	Hunters have an opportunity to transmit on non-amateur frequencies
C	Identification of out of band operation
D	Identification of different call signs

10. - G2E10

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

Select	Answer
A	It has built-in error correction
B	It offers good performance in weak signal environment without error correction
C	It is much higher speed than RTTY
D	It is much narrower bandwidth than most digital modes

11. - G2F11

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

Select	Answer
A	I am quitting for the day
B	There is interference on the frequency
C	I am ready to receive messages
D	You 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?

Select	Answer
A	14 days
B	The effect is instantaneous
C	20 to 40 hours
D	28 days

13. - G3B05

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

Select	Answer
A	They are bent back to the Earth
B	They are completely absorbed by the ionosphere
C	They pass through the ionosphere
D	They 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?

Select	Answer
A	The F layer absorbs these frequencies during daylight hours
B	The D layer absorbs these frequencies during daylight hours
C	The E layer is unstable during daylight hours
D	The 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?

Select	Answer
A	Mixing products are greatly reduced
B	The DSP filter is much more effective at VHF frequencies
C	A wide range of filter bandwidths and shapes can be created
D	Fewer digital components are required

16. - G4B15

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

Select	Answer
A	Antenna front-to-back ratio
B	Standing Wave Ratio
C	RF interference
D	Radio wave propagation

17. - G4C07

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

Select	Answer
A	Use a ground loop for best conductivity
B	Keep the station's ground wire as short as possible
C	Install a few ferrite beads on the ground wire where it connects to your station
D	Install an RF filter in series with the ground wire

18. - G4D04

What does an S-meter measure?

Select	Answer
A	Impedance
B	Received signal strength
C	Transmitter power output
D	Conductance

19. - G4E11

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

Select	Answer
A	The voltage and current ratings of such systems are not compatible with amateur equipment
B	The conversion efficiency from mechanical energy to electrical energy is less that 2 percent
C	All of these choices are correct
D	A 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?

Select	Answer
A	To minimize SWR at the antenna
B	To maximize the transfer of power
C	To reduce power dissipation in the transmitter
D	To 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?

Select	Answer
A	339.4 volts
B	169.7 volts
C	84.8 volts
D	240.0 volts

22. - G5C16

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

Select	Answer
A	A capacitor in parallel
B	A resistor in parallel
C	A resistor in series
D	A capacitor in series

23. - G6A04

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

Select	Answer
A	High capacitance for given volume
B	Non-polarized
C	Tight tolerance
D	Inexpensive RF capacitor

24. - G6B15

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

Select	Answer
A	When a constant current charger is used
B	As long as the voltage has not been allowed to drop below 1.0 volt
C	Never
D	When the cell is kept warm during the recharging period

25. - G6C01

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

Select	Answer
A	Linear voltage regulator
B	NAND Gate
C	Frequency Counter
D	Gallium 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?

Select	Answer
A	A TRF receiver
B	A direct conversion receiver
C	A super-heterodyne receiver
D	A super-regenerative receiver

27. - G7B05

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

Select	Answer
A	8
B	16
C	3
D	6

28. - G8A11

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

Select	Answer
A	The carrier frequency changes proportionally to the instantaneous amplitude of the modulating signal
B	The carrier phase changes proportionally to the instantaneous amplitude of the modulating signal
C	The carrier frequency changes proportionally to the amplitude and frequency of the modulating signal
D	The 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?

Select	Answer
A	The frequency shift must not exceed 15 Hz per WPM of keying speed
B	The frequency shift in hertz must be at least four times the keying speed in WPM
C	Greater keying speeds require greater frequency shifts
D	Greater 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?

Select	Answer
A	You cannot determine SWR from impedance values
B	1.5:1
C	6:1
D	3:1

31. - G9B01

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

Select	Answer
A	It is not effective on the higher HF bands
B	It produces only vertically polarized radiation
C	You may experience RF burns when touching metal objects in your station
D	It must be longer than 1 wavelength

32. - G9C04

Which statement about a Yagi antenna is true?

Select	Answer
A	The director is normally the longest parasitic element
B	The reflector is normally the shortest parasitic element
C	The reflector is normally the longest parasitic element
D	All of the elements must be the same length

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They must be used with an antenna tuner
B	They have poor harmonic rejection
C	They must be fed with open wire line
D	They present low impedance on all design frequencies

34. - G0A01

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

Select	Answer
A	It cools body tissue
B	It causes radiation poisoning
C	It heats body tissue
D	It 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?

Select	Answer
A	Current flowing from the hot wire to the neutral wire
B	All of these choices are correct
C	Current flowing from the hot wire to ground
D	Over-voltage on the hot wire