• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/47

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

47 Cards in this Set

  • Front
  • Back
DEFINE ELF
EXTREAMELY LOW FREQUENCY
UP TO 300HZ
SUBMARINES
DEFINE SLF
SUPER LOW FREQUENCY 300HZ - 3KHZ
DEFINE ULF
ULTRA LOW FREQUENCY
300HZ- 3KHZ
DEFINE VLF
VERY LOW FREQUENCY
3KHZ-30KHZ
FLEET COMMS
DEFINE LF
LOW FREQUENCY
30KHZ-300KHZ
RTTY BROADCAST
DEFINE MF
MEDIUM FREQUENCY
300KHZ-3MHZ
INTERNATIONAL DISTRESS, SEACH AND RESCUE
DEFINE HF
HIGH FREQUENCY
3MHZ-30MHZ
LONG DISTANCE COMMS
DEFINE VHF
VERY HIGH FREQUENCY
30MHZ-300MHZ
LINE OF SIGHT COMMS
DEFINE UHF
ULTRA HIGH FREQUENCY
300MHZ-3GHZ
DEFINE SHF
SUPER HIGH FREQUENCY
3GHZ- 30GHZ
RADAR AND SATELLITE COMMS
DEFINE EHF
EXTERMELY HIGH FREQUENCY
30GHZ-300GHZ
RADAR AND SATELLITE COMMS
DEFINE FREQUENCY
THE NUMBER OF CYCLES PER UNIT OF TIME
DEFINE WAVELENGTH
DISTANCE IN SPACE OCCUPIED BY ONE CYCLE OF A RADIO WAVE
DEFINE DUCTING
TRAPPING OF AN RF WAVE BETWEEN TWO LAYERS OF THE EARTHS ATMOSHERE
DEFINE REFRACTION
THE BENDING OF AN RF WAVES AS THE WAVES PASS THOUGH MEDIUMS OF DIFFERENT DENSITY
DEFINE MULTIPLEXING
A METHOD FOR TRANSMITTING OF TWO OR MORE SIGNALS OVER A COMMON CARRIER WAVE
DEFINE MODULATION/DEMODULATION
MODULATION IS THE ABILITY TO IMPRESS INTELLIGENCE UPON A TRANSMISSION MEDIUM, SUCH A RADIO WAVES. DEMODULATION IS REMOVING THE INTELLIGENCE FROM THE MEDIUM.
DEFINE BANDWIDTH
THE DIFFERENCE BETWEEN THE HIGHEST USABLE FREQ OF A DEVICE AND THE LOWEST USEABLE FREQ OF A DEVICE.
DEFINE KEYING
KEYING THE TRANSMITTER CAUSES AND RF SIGNAL TO BE RADIATED
WHAT ARE THE EARTHS ATMOSPHERES LAYERS
TROPOSPHERE 3.7 MILES
STRATOSPHERE 3.7 -31.1 MILES
IONOSPHERE 31.1 - 250 MILES
DEFINE CRITICAL FREQUENCY
MAX FREQUENCY A RADIO WAVE BE TRANSMITTED VERTICALLY AND REFRACTED BACK DOWN TO EARTH
DEFINE RADIO WAVES
AN ENERGY WAVE GENERATED BY A TRANSMITTER
DEFINE PROPAGATION
THE WAY IN WHICH WAVES TRAVEL THOUGH THE ATMOSPHERE
DEFINE AZIMUTH ANGLE
THE ANGLE MEASURED CLOCKWISE FROM TRUE NORTH IN THE HORIZONTAL PLANE
DEFINE ELEVATION ANGLE
THE ANGLE BETWEEN THE HORIZONTAL PLANE AND THE LINE OF SIGHT
DEFINE USB
UPPER SIDE BAND
ALL THE FREQUENCIES ABOVE THE CARRIER
DEFINE LSB
LOWER SIDE BAND
ALL THE FREQUENCIES BELOW THE CARRIER
DEFINE CW
CONTINUIOUS WAVE
MODULATION CONSISTS OF ON-OFF KEYING OF A CARRIER WAVE.
MORSE CODE
DEFINE AM
AMPLITUDE MODULATION
ANY METHOD IF VARYING THE AMPLITUDE OF AN ELECTROMAGNETIC CARRIER FREQUENCY
DEFINE FM
FREQUENCY MODULATION
THE MODULATING SIGNAL CAUSES THE CARRIER FREQUENCY TO VARY
DEFINE PRI
PULSE REPETITION INTERVAL
THE TIME BETWEEN RADAR PULSES IS THE INTER-PULSE PERIOD
DEFINE PRF
PLUS REPETITION FREQUENCY
THE RATE AT WHICH PULSES ARE TRANSMITTED
DEFINE RF AS IT APPLIES TO RADAR
THE RADIO FEQUENCY ENERGY IS TRANSMITTED TO AND REFLECTS FROM THE REFLECTING OBJECT.
DEFINE BW AS IT APPLIES TO RADAR
THE OVERALL BANDWIDTH OF THE RECEIVER IS OFTEN DETERMINED BY THE BANDWIDTH OF THE IF STAGES.
DEFINE CW AS IT APPLIES TO RADAR
WHEN RADIO FREQUENCY ENERGY IS TRANSMITTED FROM A FIXED POINT CONTINUOUSLY STIKES AN OBJECT
DEFINE PW AS IS APPLIES TO RADAR
PULSE WIDTH
DURATION OF TIME BETWEEN THE BEGINING AND ENDING EDGES OF A PULSE
DEFINE SCAN AS IT APPLIES TO RADAR
SYSTEMATIC MOVEMENT OF A RADAR BEAM TO COVER A DEFINITE PATTERN OR AREA IN SPACE
DEFINE BEARING AS IT APPLIES TO RADAR
ABILITY OF RADAR TO DISTINGUISH BETWEEN TARGETS THAT ARE CLOSE TOGETHER IN BEARING
DEFINE AZIMUTH AS IS APPLIES TO RADAR
ANGULAR MEASURMENT IN THE HORIZONAL PLANE IN A CLOCKWISE DIRECTION
DEFINE AIR SEARCH RADAR
DETERMINES THE POSITION, COURSE, AND SPEED OF AIR TARGETS IN A RELATIVELY LARGE AREA.
DEFINE SURFACE SEARCH RADAR
MAINTAINS A 360 DEGREE SEARCH PATTERN FOR ALL OBJECTS WITHIN LOS
DEFINE FIRE CONTROL RADAR
PROVIDES CONTINUOUS POSITIONAL DATA ON A TARGET
DEFINE OPELINT
OPERATIONAL ELECTRONIC INTELLIGENCE
IS CONCERNED WITH OPERATIONALLY RELEVANT INFORMATION OF FOREIGN NON COMM EMITTERS AND THEIR ASSOCIATED WEAPON SYSTEMS
DEFINE TECHLINT
TECHNICAL ELECTRONIC INTELLIGENCE
CONCERNED WITH THE TECHNICAL ASPECTS OF FOREIGN NON COMM EMITTERS
DEFINE HALF DUPLEX
PROVIDES COMMUNICATION IS BOTH DIRECTIONS BUT ONLY ONE WAY AT A TIME.
DEFINE DUPLEX
COMMUNICATION BETWEEN TWO STATIONS TAKES PLACE SIMULTANEOUSLY IN BOTH DIRECTIONS.
DEFINE SIMPLEX
COMMUNICATION IS ONE DIRECTION ONLY.