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23 Cards in this Set
- Front
- Back
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Q: What must you take into account when planning to use RF communications?
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A: Distance you want to cover.
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Q: What are the 2 basic classifications of most practical transmitting antennas?
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A: Hertz Antennas (half wave)
marconi (quarter wave) |
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Q: What is DAMA?
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A: Demand Assigned Multiple Access subsystem. Used for secure voice, CUDIXS/NAVMACS and teletypwriter.
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Q: Describe the following:
AN/PRC-148 AN/PRC-150 AN/PSC-5D |
A: AN/PRC-148 is a hand held VHF/UHF radio. When used as VHF, limited by curveture of the earth. Max range of 12 miles.
AN/PRC-150: manpack HF/VHF radio. Used primarily for HF. Limited by curvature of the earth when used in VHF. AN/PSC-5D: manpack VHF/UHF radio. Max power is 20 watts. range is limited by curvature of the earth when used in VHF. |
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Q: What is the phonetic alphabet and numerals used for?
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A: Used to spell difficult words and transmit encrypted messages.
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Q: What are PROWORDS?
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A: Designated words used to describe or mark a specific event within a mission.
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Q: What are the three types of non oral comms?
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A: Semaphore
Morse code visual signs |
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Q: What is the COMSEC BIBLE?
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A: EKMS1
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Q: What does the CMS custodian ensure?
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A: COMSEC security, accountability and disposition. Ensures TPI.
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Q: Describe TPI.
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A: Two person integrity.
Designed system to prevent single person access to certain COMSEC material. Any Top-Secret material has to be checked out IAW TPI. |
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Q: What are the 3 COMMS Frequencies?
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A: HF (3-30MHz)
VHF (30-300 MHz) UHF (300MHz-3GHz) |
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Q: What is EEFI?
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A: Essential Element of Friendly Information.
The pieces of knowledge that would damage the security of the unit if revealed. |
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Q: When is a BEADWINDOW report issued?
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A: Anytime a station leaks EEFI. Issued by Net Control Station. "Roger Out" is the only response to a BEADWINDOW.
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Q: What is the ability and opportunity to obtain knowledge of classified info?
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A: Access
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Q: A specific degree of protection against unauthorized disclosure is known as what/
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A: classification
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Q: ______ is a security violation that has resulted in confirmed or suspected exposure of classified info to unauthorized personnel.
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A: Compromise
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Q: What is need-to-know?
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A: Determination made by authorized holder of classified info that prospective recipient requires access to specific classified info.
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Q: What is a formal determination that a person meets the personnel security eligibility standards and is afforded access to classified info?
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A: Clearance
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Q: What are the different RF switch positions and their ranges?
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A: LO (200M-400M)
M (400M-5KM HI (5KM-10KM) |
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Q: What are the 3 layers of the Earth's atmosphere?
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A: Troposphere: Lowest layer. Virtually all weather happens here.
Stratosphere: Second layer that has little affect on radio waves. Ionosphere: Highest level made up of 4 layers of cloud like electrically charged ions. |
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Q: Is ocean water a good cunductor?
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A: Yes
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Q: Why is the conductivity poor in Iraq?
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A: Because we are in the middle of the fucking desert!
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Q: What is caused by elctromagnetic radiation from electrical circuits, causing unwanted signals?
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A: Electromagnetic interference (EMI)
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