RF Communication Systems Quiz
32 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the typical range for the UHF communication band?

  • 300 Mhz- 3Ghz (correct)
  • 3-30 Mhz
  • 1 Ghz- 3 Ghz
  • 100 Mhz- 1 Ghz

    • What type of antenna is used for HF transmission (Twin Whips)?

  • AS-1735
  • OE-418A (correct)
  • AS-3771B/U
  • AS-4163

    • What is the primary function of a coupler in RF communication?

  • Filtering unwanted frequencies from the RF signal
  • Amplifying the RF signal strength
  • Generating the RF signal waves
  • Matching the RF signal impedance to the antenna (correct)

    • Which communication system is considered mission critical and supports command and control operations on the ship?

    <p>ON-740 (D)</p> Signup and view all the answers

    What is the maximum estimated range for UHF LOS communication?

    <p>30-40 nautical miles (B)</p> Signup and view all the answers

    What system is used for electronic patching of various radio circuits?

    <p>TVS (C)</p> Signup and view all the answers

    Which of the following DMRs is used exclusively for UHF SATCOM operations?

    <p>DMR 7 (D)</p> Signup and view all the answers

    What does HF stand for in the context of communication?

    <p>High Frequency (C)</p> Signup and view all the answers

    Which system provides a secondary means for message traffic via UHF SATCOM?

    <p>CUDIXS (D)</p> Signup and view all the answers

    What does the acronym DRRS-N stand for?

    <p>Defense Readiness Reporting System-Navy (A)</p> Signup and view all the answers

    What feature of HF communication allows for its use in long-distance communication?

    <p>The ability of radio waves in the HF band to reflect off the ionosphere (C)</p> Signup and view all the answers

    Which system provides situational awareness (SA) and tracking of forces for the U.S. Navy?

    <p>GCCS-M (A)</p> Signup and view all the answers

    What is the difference between UHF LOS and UHF SATCOM?

    <p>UHF LOS relies on direct line-of-sight transmission, while UHF SATCOM uses satellites for relay (A)</p> Signup and view all the answers

    What is the primary means for obtaining message traffic?

    <p>OIX (D)</p> Signup and view all the answers

    Which antenna is located in front of the pilot house?

    <p>AS 4679 3-10B (C)</p> Signup and view all the answers

    What is the primary RF path for IP services?

    <p>LINK- UTJ (D)</p> Signup and view all the answers

    What is the primary purpose of the Furuno 8900S Radio Set?

    <p>Non-secure voice communication for safety-at-sea information between ships and piloting stations (C)</p> Signup and view all the answers

    What type of communication does the AN/WSC-9(V)2 system provide?

    <p>EHF satellite communication with low probability of detection and anti-jam capabilities (D)</p> Signup and view all the answers

    Which communication system is primarily used for navigation and amphibious operations?

    <p>VHF LOS communication using the Furuno 8900S (D)</p> Signup and view all the answers

    What type of communication does the IAD (International Air Distress) frequency of 121.5 Mhz use?

    <p>VHF LOS communication (A)</p> Signup and view all the answers

    Which of the following is NOT a capability of the EHF (30 Ghz- 300 Ghz) communication system?

    <p>Long-range satellite communication with high probability of detection (A)</p> Signup and view all the answers

    Which communication system is used for green gear communication between ship and boots on the ground?

    <p>PRC communication (B)</p> Signup and view all the answers

    What is the purpose of the 3-13 AS-4667 antenna located above the Pilot House?

    <p>To provide EHF satellite communication capabilities (C)</p> Signup and view all the answers

    Which communication system provides MTJ (Multi-Level Transmission) services over a TIP (Time Division Multiple Access Interface) path?

    <p>EHF communication (C)</p> Signup and view all the answers

    What is the primary function of CENTRIXS?

    <p>To enable information sharing among coalition networks (D)</p> Signup and view all the answers

    Which system is primarily used for purchasing goods onboard ships?

    <p>NAVY CASH (A)</p> Signup and view all the answers

    What does the Navy Standard Integrated Personnel System (NSIPS) provide to Sailors?

    <p>Access to training materials and career records (C)</p> Signup and view all the answers

    What is the purpose of the Automated Digital Networking System (ADNS)?

    <p>To transmit IP data across various communication systems (D)</p> Signup and view all the answers

    Which of the following systems is involved in ship and inventory management?

    <p>NTCSS (D)</p> Signup and view all the answers

    What distinguishes the Non-classified Internet Protocol Router Network (NIPRNET)?

    <p>It is dedicated to unclassified communications. (A)</p> Signup and view all the answers

    What type of data does ADNS utilize for transmission?

    <p>IP data from connected networks (A)</p> Signup and view all the answers

    What does the NIAPS system provide access to?

    <p>Real-time logistics information and technical support (C)</p> Signup and view all the answers

    Flashcards

    Radiofrequency (RF) Energy

    Electromagnetic energy consisting of electric and magnetic waves.

    HF Communication

    High Frequency communication, ranging from 3 to 30 MHz, used for long-distance exchanges.

    HF Transmitters (T-1603)

    Transmitters that operate on HF, with a total of 9 units: 8 broadband and 1 narrowband.

    HF Receivers (R-2557)

    Devices that receive HF signals, with a total of 18 units.

    Signup and view all the flashcards

    HF Coupler

    Device that matches RF signals to the antenna for efficient transmission.

    Signup and view all the flashcards

    UHF Communication

    Ultra High Frequency communication, ranging from 300 MHz to 3 GHz, supporting line-of-sight transmissions.

    Signup and view all the flashcards

    Line-of-Sight (LOS) Propagation

    UHF radio waves travel in a straight line and can be blocked by obstacles.

    Signup and view all the flashcards

    Link 11

    Data link allowing exchange of tactical information between Link 11-capable units in both HF and UHF.

    Signup and view all the flashcards

    Furuno 8900S Radio Set

    VHF radio system used for non-secure voice communication between vessels.

    Signup and view all the flashcards

    VHF LOS Communications

    Line of Sight communication capability for ship-to-ship and ship-to-shore.

    Signup and view all the flashcards

    NMT (Navy Multiband Terminal)

    Terminals providing satellite communication in EHF and SHF bands.

    Signup and view all the flashcards

    PTP Circuit

    Point to Point voice or data circuit between one ship and another unit.

    Signup and view all the flashcards

    IAD Frequency

    International Air Distress channel operating on 121.5 MHz.

    Signup and view all the flashcards

    POTS

    Plain Old Telephone System providing secure and unsecure voice communications.

    Signup and view all the flashcards

    ON-740

    A secure voice system used for tactical communications on ships.

    Signup and view all the flashcards

    IVCS

    Shipboard phone system managed by the Integrated Communications (IC) department.

    Signup and view all the flashcards

    TVS

    Tactical Variant Switch for electronic patching of radio circuits.

    Signup and view all the flashcards

    SWICS

    Shipwide Interior Wireless Communications System for shipboard radios.

    Signup and view all the flashcards

    SIPRNET

    Secret Internet Protocol Router Network for classified communications.

    Signup and view all the flashcards

    DRRS-N

    Defense Readiness Reporting System-Navy for evaluating Navy readiness and capabilities.

    Signup and view all the flashcards

    GCCS-M

    Global Command and Control System-Maritime for situational awareness and force tracking.

    Signup and view all the flashcards

    CENTRIXS

    A coalition network system for information sharing through email, web services, and VoIP.

    Signup and view all the flashcards

    NIAPS System

    An unclassified system giving sailors access to training materials and support applications.

    Signup and view all the flashcards

    NTCSS

    Software suite for ship and inventory management in Navy and Marine Corps operations.

    Signup and view all the flashcards

    NAVY CASH

    A system for purchasing goods on ships, replacing traditional currency.

    Signup and view all the flashcards

    NSIPS

    The Navy’s electronic pay and personnel system allowing easy access to records.

    Signup and view all the flashcards

    ADNS

    Automated Digital Networking System for transferring IP data across RF networks.

    Signup and view all the flashcards

    KG-175 Taclane

    A device ensuring secure data transfer across different security enclaves.

    Signup and view all the flashcards

    Study Notes

    Radiofrequency (RF) Energy

    • RF energy is another name for radio waves
    • It's a form of electromagnetic energy
    • Consists of electric and magnetic energy waves moving together
    • Generated by transmitters and sent through antennas
    • Travels at the speed of light to distant antennas and receivers

    High Frequency (HF) Communication

    • HF communication operates in the 3-30 MHz range
    • HF transmitters (T-1603) consist of 9 units (8 broadband, 1 narrowband)
    • HF receivers (R-2557) total 18 units

    R-2557/URC Radio Receiver

    • A general-purpose LF/MF/HF receiver
    • Designed for computer-controlled systems
    • Operates in AM, CW, FSK, USB, LSB, and ISB modes
    • Operates in the 14kHz to 1.61999 MHz and 2 to 29.99999 MHz frequency range
    • Tunable in 1 Hz increments
    • Stores up to 100 preset channels
    • LF/MF wired receivers connected in positions 1-4 via F-1650/URC Bandpass Filter AUX RF input port
    • Narrowband transmitter (R-2557 unit #5) is linked to the F-1650/URC AUX port

    HF Couplers

    • Match RF signals to antennas
    • Examples include: CU-2544, CU-2475A, CU-2416A, and CU-2460

    HF Antennas

    • Examples include: 2-3 OE-418A Transmit (Twin Whips)

    Other Communication Types

    • UHF (300 MHz - 3 GHz): used for ship-to-ship, ship-to-shore, ship-to-air communication

    • DMRs: used for various UHF communication types

    • VHF (30 MHz - 300 MHz): includes portable radio communication, bridge-to-bridge communication, etc. Requires communication between ship-masters and piloting stations

    • EHF: long-range satellite communication with low detection probability

    • SHF: has long range satellite communication, primarily use for IP services; secure and unsecure voice communication

    • ON-740: secure voice system for tactical communications

    • IVCS: shipboard telephone system

    • TVS: electronic patching system to connect various radio circuits

    • SWICS: ship-wide interior wireless system (walkie-talkies)

    • TSN: Tomahawk Strike Network

    • Fleet broadcast: Another method of message traffic via UHF satellites.

    • Computer systems: examples include SIPRNET (Secret Internet Protocol Router Network) and DRRS-N

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    Communications Fundamentals PDF

    Description

    Test your knowledge on radio frequency (RF) communication systems focusing on UHF and HF technologies. This quiz covers key concepts such as antenna types, communication ranges, and critical systems used in naval operations. Perfect for those studying communication technology or preparing for assessments in this field.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser