Amateur Radio General Exam Q+Right Answer G8B to G0B

50 cards

Amateur Radio General


 
  
Created Sep 2, 2010
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ki4wty

 

 
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  Side A   Side B
1
G8B01 (A)
What receiver stage combines a 14.250 MHz input signal with a 13.795 MHz oscillator...
 
G8B02 (B)
If a receiver mixes a 13.800 MHz VFO with a 14.255 MHz received signal to produce...
2
G8B03 (A)
What stage in a transmitter would change a 5.3 MHz input signal to 14.3 MHz?...
 
G8B04 (D)
What is the name of the stage in a VHF FM transmitter that selects a harmonic...
3
G8B05 (C)
Why isn't frequency modulated (FM) phone used below 29.5 MHz?

C. The...
 
G8B06 (D)
What is the total bandwidth of an FM-phone transmission having a 5 kHz deviation...
4
G8B07 (B)
What is the frequency deviation for a 12.21-MHz reactance-modulated oscillator...
 
G8B08 (C)
How is frequency shift related to keying speed in an FSK signal?

C. Greater...
5
G8B09 (B)
What do RTTY, Morse code, PSK31 and packet communications have in common?

B....
 
G8B10 (B)
When transmitting a data mode signal, why is it important to know the duty cycle...
6
G8B11 (D)
What part of the 20 meter band is most commonly used for PSK31 operation?

D....
 
G8B12 (A)
What is another term for the mixing of two RF signals?
A. Heterodyning...
7
G9A01 (A)
Which of the following factors help determine the characteristic impedance of...
 
G9A02 (B)
What is the typical characteristic impedance of coaxial cables used for antenna...
8
G9A03 (D)
What is the characteristic impedance of flat ribbon TV type twin lead?

D....
 
G9A04 (C)
What is a common reason for the occurrence of reflected power at the point where...
9
G9A05 (D)
What must be done to prevent standing waves on an antenna feedline?

D....
 
G9A06 (C)
Which of the following is a reason for using an inductively coupled matching...
10
G9A07 (B)
How does the attenuation of coaxial cable change as the frequency of the signal...
 
G9A08 (D)
In what values are RF feed line losses usually expressed?
D. dB per 100...
11
G9A09 (A)
What standing-wave-ratio will result from the connection of a 50-ohm feed line...
 
G9A10 (D)
What standing-wave-ratio will result from the connection of a 50-ohm feed line...
12
G9A11 (B)
What standing-wave-ratio will result from the connection of a 50-ohm feed line...
 
G9A12 (A)
What would be the SWR if you feed a vertical antenna that has a 25-ohm feed-point...
13
G9A13 (C)
What would be the SWR if you feed a folded dipole antenna that has a 300-ohm...
 
G9A14 (B) 
If the SWR on an antenna feedline is 5 to 1, and a matching network at...
14
G9B01 (B)
What is one disadvantage of a directly fed random-wire antenna?

B. You...
 
G9B02 (D)
What is an advantage of downward sloping radials on a ground-plane antenna?
D....
15
G9B03 (B)
What happens to the feed-point impedance of a ground-plane antenna when its radials...
 
G9B04 (A)
What is the low angle azimuthal radiation pattern of an ideal half-wavelength...
16
G9B05 (C)
How does antenna height affect the horizontal (azimuthal) radiation pattern of...
 
G9B06 (C)
Where should the radial wires of a ground-mounted vertical antenna system be...
17
G9B07 (B)
How does the feed-point impedance of a 1/2 wave dipole antenna change as the...
 
G9B08 (A) 
How does the feed-point impedance of a 1/2 wave dipole change as the feed-point...
18
G9B09 (A)
Which of the following is an advantage of a horizontally polarized as compared...
 
G9B10 (D) 
What is the approximate length for a 1/2-wave dipole antenna cut for 14.250...
19
G9B11 (C)
What is the approximate length for a 1/2-wave dipole antenna cut for 3.550 MHz?...
 
G9B12 (A)
What is the approximate length for a 1/4-wave vertical antenna cut for 28.5 MHz?
A....
20
G9C01 (A)
How can the SWR bandwidth of a Yagi antenna be increased?
A. Use larger...
 
G9C02 (B)
What is the approximate length of the driven element of a Yagi antenna?

B....
21
G9C03 (B)
Which statement about a three-element single-band Yagi antenna is true?

B....
 
G9C04 (A)
Which statement about a Yagi antenna is true?
A. The reflector is normally...
22
G9C05 (A)
What is one effect of increasing the boom length and adding directors to a Yagi...
 
G9C06 (C)
Which of the following is a reason why a Yagi antenna is often used for radio...
23
G9C07 (C)
What does "front-to-back ratio" mean in reference to a Yagi antenna?

C....
 
G9C08 (D)
What is meant by the "main lobe" of a directive antenna?

D. The direction...
24
G9C09 (A)
What is the approximate maximum theoretical forward gain of a 3 Element Yagi...
 
G9C10 (D)
Which of the following is a Yagi antenna design variable that could be adjusted...
25
G9C11 (A)
What is the purpose of a "gamma match" used with Yagi antennas?
A. To match...
 
G9C12 (D)
Which of the following describes a common method for insulating the driven element...
26
G9C13 (A)
Approximately how long is each side of a cubical-quad antenna driven element?...
 
G9C14 (B)
How does the forward gain of a 2-element cubical-quad antenna compare to the...
27
G9C15 (B)
Approximately how long is each side of a cubical-quad antenna reflector element?...
 
G9C16 (D)
How does the gain of a two element delta-loop beam compare to the gain of a two...
28
G9C17 (B)
Approximately how long is each leg of a symmetrical delta-loop antenna Driven...
 
G9C18 (D)
Which of the following antenna types consists of a driven element and some combination...
29
G9C19 (C)
What type of directional antenna is typically constructed from 2 square loops...
 
G9C20 (A) 
What happens when the feed-point of a cubical quad antenna is changed from...
30
G9C21 (D)  
What configuration of the loops of a cubical-quad antenna must be...
 
G9D01 (D)
What does the term "NVIS" mean as related to antennas?

D. Near Vertical...
31
G9D02 (B)
Which of the following is an advantage of an NVIS antenna?

B. High vertical...
 
G9D03 (D)
At what height above ground is an NVIS antenna typically installed?

D....
32
G9D04 (B) 
How does the gain of two 3-element horizontally polarized Yagi antennas...
 
G9D05 (D)
What is the advantage of vertical stacking of horizontally polarized Yagi antennas?

D....
33
G9D06 (A)
Which of the following is an advantage of a log periodic antenna?
A. Wide...
 
G9D07 (A)
Which of the following describes a log periodic antenna?
A. Length and spacing...
34
G9D08 (B)
Why is a Beverage antenna generally not used for transmitting?

B. It has...
 
G9D09 (B)
Which of the following is an application for a Beverage antenna?

B. Directional...
35
G9D10 (D)
Which of the following describes a Beverage antenna?

D. A very long and...
 
G9D11 (D) 
Which of the following is a disadvantage of multiband antennas?
D....
36
G9D12 (A)
What is the primary purpose of traps installed in antennas?
A. To permit...
 
G0A01 (A)
What is one way that RF energy can affect human body tissue?
A. It heats...
37
G0A02 (B)
Which property is NOT important in estimating if an RF signal exceeds the maximum...
 
G0A03 (B)
Which of the following has the most direct effect on the permitted exposure level...
38
G0A04 (D)
What does "time averaging" mean in reference to RF radiation exposure?
D....
 
G0A05 (A)
What must you do if an evaluation of your station shows RF energy radiated from...
39
G0A06 (C)
Which transmitter(s) at a multiple user site is/are responsible for RF safety...
 
G0A07 (A)
What effect does transmitter duty cycle have when evaluating RF exposure?
A....
40
G0A08 (C)
Which of the following steps must an amateur operator take to ensure compliance...
 
G0A09 (B)
What type of instrument can be used to accurately measure an RF field?

B....
41
G0A10 (D)
What do the RF safety rules require when the maximum power output capability...
 
G0A11 (C)
What precaution should you take if you install an indoor transmitting antenna?...
42
G0A12 (B)
What precaution should you take whenever you make adjustments or repairs to an...
 
G0A13 (D)
What precaution should be taken when installing a ground-mounted antenna?

D....
43
G0A14 (D)
What is one thing that can be done if evaluation shows that a neighbor might...
 
G0A15 (D) [97.13(c)(1)]
How can you determine that your station complies with FCC RF exposure...
44
G0B01 (A)
Which wire(s) in a four-conductor line cord should be attached to fuses or circuit...
 
G0B02 (C)
What is the minimum wire size that may be safely used for a circuit that draws...
45
G0B03 (D)
Which size of fuse or circuit breaker would be appropriate to use with a circuit...
 
G0B04 (A)
What is the mechanism by which electrical shock can be lethal?
A. Current...
46
G0B05 (B)
Which of the following conditions will cause a Ground Fault Circuit Interrupter...
 
G0B06 (D)
Why must the metal chassis of every item of station equipment be grounded (assuming...
47
G0B07 (B)
Which of the following should be observed for safety when climbing on a tower...
 
G0B08 (B)
What should be done by any person preparing to climb a tower that supports electrically...
48
G0B09 (D)
Why is it not safe to use soldered joints with the wires that connect the base...
 
G0B10 (A)
Which of the following is a danger from lead-tin solder?
A. Lead can contaminate...
49
G0B11 (D)
Which of the following is good engineering practice for lightning protection...
 
G0B12 (C) 
What is the purpose of a transmitter power supply interlock?

C....
50
G0B13 (B)
Which of the following is the most hazardous type of electrical energy?

B....
 
G0B14 (B)
What is the maximum amount of electrical current flow through the human body...


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