Coaxial RF cable and HDTV?
Ok, im a little confused. I have read that coaxial rf cable cannot send HD signals. This is off the discovery website. So then why does my TV say 1080i on some of the HD stations and why am I receiving HD stations???
Coaxial cable is a popular and cost-effective method used to carry digital audio as well as analog and digital RF video signals up to several hundred feet or beyond, with minimum degradation or loss, depending on the signal, cable construction and quality, and the electronics within the signal path.
As I interpreted Discovery’s “HD Guru” tutorial they are strictly referring to a “traditional” (standard definition) ANALOG composite baseband video signal, which is normally transmitted over 75? coaxial cable connected to a typical “Coaxial RF Input,” and should not be construed otherwise. However, their assertion would no longer apply when it comes to a DIGITAL video signal input directly from a cable TV provider to a “Coaxial RF Input” on a (high definition) “Plug-and-Play Digital Television.”
Cable TV providers and direct broadcast (aka, direct-to-home) satellite TV providers regularly utilize coaxial cabling, most often high grade RG-6, to carry digital high-definition TV signals (720p and 1080i) along with their digital standard definition TV signals. Whether from the CATV provider’s individual hubs and nodes to the subscriber’s premises, or from an LNB affixed to an exterior satellite antenna mounted outside a subscriber’s premises to the satellite receiver located inside, you will find the ubiquitous coaxial cable.
The professional video and broadcast industry has used high performance, high quality coaxial cable for distributing digital high-definition video and television signals (up to 1080p) for more than a decade. New technology, along with a set of new standards, currently makes it possible to transmit 2048×1080p digital high-definition video signals over a single (3G-SDI) coaxial cable.
HDTV OTA – COAX Cable Only
