No two way communication

amplifying specific frequencies while attenuating others

Home antenna and the television set

distance occupied by one cycle

represent numbers letters or special symbols

cycles of repetive waves

The resulting is known radio when free space the channel

produced increased version of the input cignal

means amplification in a manner that if a signal applied to a circuit

is a single frequency analog signal

One way or Simplex and simplest way of electronics communication

It uses morse code

full duplex or half duplex

electricity and allows the flow of charge such metals and alloys

the range of electromagnetic spectrum and radiates to free space

two way communication but the direction alternates

continuous repeated and alternating waveform

cable or light pipe that carries the message on the light wave

listens for underwater sounds

combine an inductor and capacitor

combine or two or more electronic signals

destination means

Continuously varying voltage or current

do not change continuously but vary discrete increments

also know as radio telegraphy