fiber optic cables, coaxial cables, and twisted pair cables.
6" FULLSAIL
It could be... Signal cables crossing electrical cables , bad earthing on the equipment , a signal loop eg feedback , static , intaferance ( due to poorly shielded cables ) or a bad connection
Coal and Iron elloc72
A wired router is able to spilt the Internet signal and send it down Internet cables or Ethernet cables. It is capable of sending the signal to many different computers.
Coaxial
You don't need HDMI cables for an HD signal, but if you want to get maximum resolution for your tv (1080 p) you do. The short answer is no, you do not need HDMI Cables just to get an HD signal. BUT HDMI cables transfer the higher-resolution images at a faster rate, giving you a much better picture.
CAT6 cables do provide better signal strength and bandwith than CAT5, but for most purposes CAT5e will work just as well and be cheaper.
Multi strand cables that can be spliced include unshielded and control cables, shielded signal and control cables, and 1000 volt cables. Special kits to splice these types of cables are sold by companies like 3M.
Ribbon cables are mostly, but not always lower voltage signal carriers. Power cables are mostly larger and carry higher voltage to various parts tht need it.
Ethernet
A compatible network card and proper cables.