|
| 1. |
Which statement describes antenna theory?
|
|
| 2. |
A current flows in an antenna with ____________ that varies with the applied voltage.
|
|
| 3. |
The amount of energy propagated by an antenna in a certain direction, compared to the energy propagated by that antenna if it were not directional, is called what?
|
A. Reciprocity |
|
B. Polarization |
|
C. Ground effect |
|
D. Gain |
|
|
| 4. |
A quarter-wave antenna erected vertically, with its lower half connected to the ground, operates like what?
|
|
| 5. |
Treating soil with salt will enhance what?
|
|
| 6. |
A counterpoise does which of the following?
|
|
| 7. |
Which radiation pattern does a whip antenna normally have?
|
|
| 8. |
A signal team must construct a half-wave long-wire antenna for use with its AM radio, operating at a frequency of 10 MHz. How long must the antenna be?
|
A. 4.68 meters |
|
B. 4.68 feet |
|
C. 46.8 meters |
|
|
|
|
| 9. |
What is the orientation of a radio wave's electric field in relation to the Earth?
|
|
