ASSIGNMENT 2
Textbook Assignment: "Antennas," chapter 2, pages 2-1 through 2-32.
2-1 Electromagnetic radiation from an antenna is made up of what two components?
- E and. H fields
- Ground and sky waves
- Vertical and horizontal wavefronts
- Reflected and refracted energy
2-2. What determines the size of a transmitting antenna?
- Transmitter power
- Available space
- Operating frequency
- Distance to be transmitted
2-3. Most practical transmitting antennas are divided into two classifications, Hertz and Marconi.
- T
- F
2-4. Hertz antennas are designed to operate at what wavelength in relationship to their operating frequency?
- Quarter-wave
- Half-wave
- Three quarter-wave
- Full-wave
2-5. Marconi antennas are used for operating frequencies below what level?
- 10 MHz
- 6 MHz
- 4 MHz
- 2 MHz
2-6. All antennas regardless of their shape or size have how many basic characteristics?
- 1
- 2
- 3
- 4
2-7 The ability to use the same antenna for both transmitting and receiving is known by what term?
- Gain
- Reciprocity
- Directivity
- Polarization
2-8. The ability of an antenna or or more specific array to focus energy in one directions is represented by a measurement of what antenna property?
- Signal Strength
- Reciprocity
- Directivity
- Polarization
2-9. The gain of a transmitting antenna is 9 dB, what will the gain be for the same antenna used for receiving?
- 9 dB
- 6 dB
- 4 dB
- 3 dB
2-10. Which, if any, of the following components of a radiated electromagnetic field determines its direction of polarization?
- H lines
- E lines
- Angle of Propagation
- None of the above
2-11. Over long distances the polarization of a radiated wave changes, at what frequencies will this change be the most dramatic?
- VLF
- LF
- MF
- HF
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