SS0002 Practice Exercise 2 Answer Key And Feedback
Tactical Continuous Wave and Voice Radio Equipment
| 1. |
You are using the AN/VRC-43 set to communicate with a special forces unit that is using the AN/PRC-70 set. The unit moves over a large hill, cutting off communications. Which of the following radio sets should you use to reestablish communications with the unit?
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B. AN/GRC-106.
Since communications was cut off as the unit moved over the hill, you have an indication that the direct path of communication is no longer available. Most VHF communications take place along the direct path, so you must try another propagation path to communicate with the unit. The AN/GRC-106 is an HF radio, so it can use the sky-wave transmission path. The AN/PRC-70 has the capability to communicate in both HF and VHF bands and using both AM and FM modes. This feature makes it capable of taking advantage of whatever communications paths and equipment are available.
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| 2. |
While the special forces unit is still on the other side of the large hill, it experiences a failure in its AN/PRC-70 set. Which of the following sets can the unit use to reestablish communications with you?
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C. AN/PRC-74.
The unit is still out of the range of a VHF line-of-sight radio. If their AN/PRC-70 fails, they must use some other HF AM radio set. The AN/PRC-74 is the only choice that matches those criteria.
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| 3. |
You are directed to set up a net radio interface using your AN/VRC-12 series radio. Which of the following pieces of auxiliary equipment should you use to accomplish this?
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A. AN/GSA-7.
The AN/GSA-7 is a switching device designed to provide NRI for AN/VRC-12 series radios. The AN/GRA-6 and GRA-39B are both remote radio control devices and the AN/GRC-19 is an AM radio set.
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| 4. |
While you are in your exercise area, some civilian trucks with citizens' band radios enter your exercise area. Which radio set should you use to inform them that they are in a restricted area?
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C. AN/FRC-93.
The AN/FRC-93 is a military derivative of the commercial citizens' band radio. The other choices are all VHF radios and would not be compatible with the truck's radios.
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Lesson 3
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