https://atrc.net.pk/dokuwiki/ 2026-04-11T15:36:47+00:00 https://atrc.net.pk/dokuwiki/ https://atrc.net.pk/dokuwiki/lib/tpl/dokuwiki/images/favicon.ico text/html 2024-03-23T21:04:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://atrc.net.pk/dokuwiki/doku.php?id=products:ict:communications:courses:transmission_media:guided_media&rev=1711227840&do=diff Guided media Guided media, also known as bounded or wired media, refers to the physical medium through which signals propagate in a communication system. Here are some common types of guided media: 1. Twisted Pair Cable: Description: Twisted pair cables consist of pairs of insulated copper wires twisted together to reduce electromagnetic interference (EMI) and crosstalk. Types: Unshielded Twisted Pair (UTP): Used in most Ethernet networks, telephone lines, and home networks. It's chea… text/html 2024-03-23T21:07:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://atrc.net.pk/dokuwiki/doku.php?id=products:ict:communications:courses:transmission_media:transmission_impairments_and_noise&rev=1711228020&do=diff Transmission media refer to the physical pathways through which data is transmitted from one point to another in a telecommunication network. These media can be classified into guided media, where the signals are guided along a physical path, and unguided media, where the signals propagate freely through space. Common examples of guided media include twisted pair cables, coaxial cables, and optical fibers, while examples of unguided media include radio waves, microwaves, and infrared. text/html 2024-03-23T21:05:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://atrc.net.pk/dokuwiki/doku.php?id=products:ict:communications:courses:transmission_media:wireless_transmission&rev=1711227900&do=diff Wireless transmission Wireless transmission involves the propagation of electromagnetic signals through the air or space without the need for physical cables. Various frequencies and wavelengths of electromagnetic radiation are utilized for wireless communication, including radio waves, microwaves, and infrared waves. Here's an overview of different types of wireless transmission: 1. Radio Waves: