Wednesday 21 October 2015

And how we handle Cable TV wiring ?

In general the use of coaxial cable is declining worldwide in favour of Optical Fiber for Internet and TV signal distribution outside the home and Ethernet (Cat5e/6) inside the home. . Even analog CCTV cameras are getting replaced by digital. 

However because most Setop boxes and TV still expect a coax Input and as such we need coax cable from ONT/ONU to STB. In india still TV distribution by Optical fiber is not widespread and DTH/Traditional cable TV networks hold sway due to which we must be prepared to install proper coax wiring for the next 5-10 years for Video (TV).

Again like Ethernet and telephone, coaxial wiring must be done in a "STAR" fashion and not "Bus" Topology by using splitters, in case of multi TV configurations. It is recommended to install either


  1. an inline signal amplifier + splitter or
  2. a multi-channel switch (non-cascading)

at the STAR point if splitting is done to serve more than 1 TV.

Generally one should make a provision for TV in every room, and hence this may be unavoidable to maintain signal strength. It is also recommended to run 3 cables to each access point from the STAR as many STBs feature dual Tuners, pl;us we may need the ability to receive both terrestrial radio/tv or local Cable TV in addition to  DTH transmission. This is a one time investment.

Also RG6 is the recommended cable TV/DTH coaxial wiring standard (costs Rs. 10-12/m in bulk package in India). However we recommend that "RG6/U quad shielded cable ore RG6QS" (Rs. 40-50 per meter) be used as it offers better high frequency and EMI performance and is the new recommended standard for MATV, recommended satellite TV distribution standard in residential or commercial premises. Commscope, Finolex and Belden are the better brands (in order) of coaxial cable in Indian market (Refer http://www.broadcastandcablesat.co.in/cables-dth-and-catv-drive-demand.html)


- Suman Kumar Luthra @ APRC-P3 Telecom Sub-Committtee

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