VOCABULARY & PHRASEOLOGY Telecommunications channel degradation destination information source input transducer interference noise transmitter receiver to be distorted to transmit a signal through a channel coaxial cable STP optic fibre cable wavelength amplitude UTP Cables copper wire conductor dielectric insulator fibre optic cable glass core grounding cable insulating material (PVC) jacket shield/shielding twisted pair cable to use/install a cable to connect transmitters and receivers to antennas to offer protection from Waves Bluetooth technology electromagnetic spectrum electromagnetic wave infrared wave microwave mobile network oscillation visible light to generate a wave to measure the amplitude of a wave 148 laser communication satellite Transmission analogue/digital/ continuous/discrete signal ground station physical media via cables wireless to amplify a signal to carry a signal/message to change the frequency to convert information into something to encode/decode data to read/receive a signal to transform an analogue signal into a digital signal antenna Li-Fi technology