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22 Cards in this Set
- Front
- Back
A patch panel that is used to patch encrypted secure signals.
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Black Patch Panel
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A patch panel that is used to patch signals that are not encrypted and may be vulnerable to unauthorized interception.
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Red Patch Panel
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Frequency Shift Keying is a form of frequency modulation in which the modulating signal ____.
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shifts the converter’s output frequency between predetermined values.
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Coast Guard High Frequency or HF Comms use the ____ MHz frequency range to provide long range voice and data communication capabilities.
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2.0 - 30 Mhz
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HFDL Stands for what?
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High Frequency Data Link System
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HFDL is used on small cutters to do what?
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send and receive message traffic
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The single purpose of the HFDL system is to provide what?
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a system of message traffic communication for cutters when they are underway
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TSEC-KG84C, encrypts what?
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digital data signals only
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TSEC/KYV-5, encrypts what?
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both audio and digital signals
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The Miniloop antenna is a vertical loop antenna. It’s designed to perform best at short ranges, up to ____ Miles.
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300
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The AN/URT-41(V) (HF-80)comes in two versions they are?
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a 10 kW, and a 1 kW Transmitter Set.
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The HF-80 transmitter set is used at Coast Guard Communications Stations to transmit What two things?
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-Secure/non-secure single sideband voice communication, and
-Secure/non-secure radio teletype communications. |
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PEP stands for what?
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Peak Envelope Power.
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CG HF Communication Systems operate in the frequency range of ________ to _______ MHz.
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2 - 30 MHz
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The MF NAVTEX broadcast is transmitted at a frequency of
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518 kHz
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The output of a transmitting encryption device would be connected to a red/black patch panel.
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Black
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What does FEC (pertaining to data communications) stand for?
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Forward Error Correction
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A CONVERTER (when part of a Keyer/Converter combination) performs what function in a data communications system?
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A CONVERTER performs the DEModulation function (audio to digital) in a data communications system.
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Using a C-11609(P) GRC-901 control head, how is the tune cycle initiated?
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By selecting a valid (programmed) channel and keying the microphone.
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What classes of Coast Guard cutters utilize the HFDL system?
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110’s, 140’s, 180’s, 225’s and Polar Ice Breakers
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The NAVTEX broadcast uses both the _______ and _______ transmitters for their broadcasts.
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Nautel ND250T/6, Nautel NX2500TT/6.
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An HFDL system uses a __________ as it’s encryption device?
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KG-84C
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