Wireless Communication Terms

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I D I
     
O O N
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N P D F
       
O P U E
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S L C T D
         
P E T R E
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H R A N A L O G   C O M M U N I C A T I O N S R
         
E   N P A
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C R E C C O N D U C T O R L
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W A V E   F R E Q U E N C Y S  
       
P F P C
       
A E H O
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C C A A E M
           
I T L M R M
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T A T M O S P H E R E U
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A E E N
14                 15       16  
F R E Q U E N C Y I O N R R I
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C E L A N T E N N A C
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E S H O R T - C I R C U I T A D W A
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G N O T I W A T T
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Y E O H M I A V I
         
  N T E O
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F V O L T G I   N
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P O W E R F   O A S
           
E   C N M  
         
E S U P C
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D I G I T A L   C O M M U N I C A T I O N S R L O
         
E G R I M
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L H D I R E C T   C U R R E N T M
         
E T N U I
       
C T D S
     
T E S
   
R I
   
O O
   
N N

Across

  1. using physical representation: relating to a system or device that represents data variation by a measurable physical quality.
  2. something that conveys heat or electricity: a substance, body, or medium that allows heat, electricity, light, or sound to pass along it or through it. Metals are good conductors of heat because of the high concentration of free electrons they contain.
  3. broadcasting wavelength: a wavelength on which a radio or television signal is broadcast and to which a receiving set can be tuned.
  4. gas around celestial body: the mixture of gases that surrounds a celestial body such as the Earth.
  5. rate of recurrence: the number of times that something such as an oscillation, a waveform, or a cycle is repeated within a particular length of time, usually one second. Symbol Symbol f
  6. electrically charged atom or atom group: an atom or group of atoms that has acquired an electric charge by losing or gaining one or more electrons.
  7. device for sending and receiving radio waves: a metallic piece of equipment of variable shape, used in the sending and receiving of television or radio signals.
  8. have or cause failure in a circuit: to have or cause a failure in an electrical circuit by creating a connection of low resistance across which an excessive current flows.
  9. unit of electrical power: the international ( SI ) unit of power equal to the power produced by a current of one ampere acting across a potential difference of one volt. Symbol W.
  10. unit of electrical resistance: the SI unit of electrical resistance, equal to the resistance between two points on a conductor when a potential difference of 1 volt produces a current of 1 ampere. Symbol
  11. unit of electric potential difference: the unit of electromotive force and electric potential difference equal to the difference between two points in a circuit carrying one ampere of current and dissipating one watt of power. Symbol V
  12. measure of rate of doing work: a measure of the rate of doing work or transferring energy, usually expressed in terms of wattage or horsepower. Symbol P
  13. representing sound/light waves as numbers: representing a varying physical quantity, such as sound or light waves, by means of discrete signals interpreted as numbers, usually in the binary system, as in a digital recording or digital television.
  14. unidirectional electrical current: electrical current that flows in only one direction and has a fairly constant average value.

Down

  1. ionized layers in upper atmosphere: four layers of the Earth's upper atmosphere in which incoming ionizing radiation from space creates ions and free electrons that can reflect radio signals, enabling their transmission around the world.
  2. change in frequency because of motion: a perceived change in the frequency of a wave as the distance between the source and the observer changes. For example, the sound of a siren on a moving vehicle appears to change as it approaches and passes an observer.
  3. property of electric circuit: the property of an electric circuit or device whereby an electromotive force is created by a change of current in it or in a circuit near it. Symbol L
  4. The Federal Communications Commission (FCC) is an independent United States government agency, directly responsible to Congress. The FCC was established by the Communications Act of 1934 and is charged with regulating interstate and international communications by radio, television, wire, satellite and cable. The FCC's jurisdiction covers the 50 states, the District of Columbia, and U.S. possessions.
  5. lowest layer of the atmosphere: the lowest and most dense layer of the atmosphere, extending 8 to 16 km (5 to 10 mi), in which temperature decreases with rising altitude and most weather occurs.
  6. 1. ability to store electric charge: the ability of a substance to store electric charge 2. measure of electric charge storage: a measure of the capacitance of a substance, equal to the surface charge divided by the electric potential. Symbol C 3. part of electric circuit: the part of an electric circuit that has capacitance
  7. reversing current: an electric current that regularly reverses direction.
  8. 1. ampere: an ampere 2. amplifier: an amplifier (informal)
  9. power supply or source: a supply or source of electrical, mechanical, or other form of power.
  10. energy emitted in rays or waves: any kind of energy that is emitted from a source in the form of rays or waves, for example, heat, light, or sound.
  11. line from eye to object: an imaginary line from an observer to a distant object.
  12. smallest part of element: the smallest portion into which an element can be divided and still retain its properties, made up of a dense, positively charged nucleus surrounded by a system of electrons. Atoms usually do not divide in chemical reactions except for some removal, transfer, or the exchange of specific electrons.
  13. signal's maximum value: the maximum value of an alternating signal.
  14. electron not bonded to an atom: an electron that is not bonded to an atom or molecule and so is free to move under external electric or magnetic fields.


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