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22 Cards in this Set

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