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1. What is a transducer that transmits or receives electromagnetic waves. In other words, antennas convert electromagnetic
radiation into electrical current, or vice versa.
1. Antenna.
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2. What are the two main types of AM Antennas?
- 2.
- - Self-Supporting.
- - Guy-Wired Supported.
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3. What are the two varieties of the AM Antennas?
3. Grounded and Base Insulated.
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4. A single tower broadcast antenna is ____-___________, while Multiple tower
installations are __________.
4. Omni-directional, Directional.
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5. Most FM broadcast antenna systems are designed to radiate both ________ and __________ polarized signals.
5. Vertical and Horizontal.
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6. Commercial television broadcast antennas are usually ____-___________.
6. Omni-Directional.
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7. An antenna’s radiation pattern varies depending on what?
7. The antenna configuration, application, and surrounding terrain.
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8. What is the Frequency range for AM broadcasts?
8. 540 kHz through 1600 kHz.
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9. The majority of VHF television antennas look similar to what?
9. FM Broadcast Antennas.
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10. The most common configuration is to mount the panels to triangular platforms on a 50-150 foot monopole tower?
10. Cellular Antennas.
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11. Most cell site antennas are attached to what type of platforms?
11. Triangular.
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12. VHF ranges from __-___ MHz.
12. 30-300 MHz.
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13. UHF ranges from ___ MHz - _ GHz
300 MHz - 3 GHz.
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14. What are your seven types of VHF/UHF Antennas?
14.
- - Antennas for Point-to-Point Links
- - Yagi-Uda Antennas
- - Log
- - Periodic Antennas
- - Helics
- - Panel Antennas
- - Corner Reflectors
- - Paraboloids
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15. What are your four type of Base Station VHF/UHF Antennas?
- 15.
- - Discone antennas
- - Dipoles
- - Stacked dipole arrays
- - Vertical ground plane antennas
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16. Yagi antennas are very widely used as general purpose antennas with a gain up to what?
16. 17 dBi.
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17. What are the benefits of the Corner Reflector antenna?
17. Provides high gain and low side lobes.
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18. Which antenna is an excellent choice for communications jamming?
18. The log periodic antenna.
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19. Microwave antennas are predominantly what type of line-of-sight technology?
19. Unidirectional.
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20. RADAR systems are classified as fixed site, transportable or________?
20. Mobile.
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21. What is the frequency range used in direction finding antennas?
21. LF thru EHF.
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22. Which antennas are very widely used as general purpose antennas at frequencies 12 to 50 MHz and are cheap and simple to construct?
22. Yagi Antennas.
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23. Which antenna comprises a reflecting screen with simple radiating elements mounted over it in a broadside configuration, is generally termed a panel antenna and is used for frequencies in the UHF band?
23. Panel Antennas.
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24. What is a high-gain reflector antenna used for radio, television, data links and communications with satellites?
24. Parabolic Antennas.
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25. Which antenna is most commonly used low-gain wideband base station antenna?
25. Discone Antenna.
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26. Most popular omni-directional antennas are simple half-wave _______.
26. Dipoles.
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27. What provides omni-directional coverage over VHF-UHF spectrum and is used for commercial and private base-station VHF-UHF broadcast applications?
27. Dipole Arrays.
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