On 03/03/2011 19:25, Manu Abraham wrote:
>> >  What sort of cable is it? Has a coax like appearance. Broadband distr=
ibution?
> Looks like coax, could be broadband. By around 2006 they switched to
> digital cable, so it could possible be DVB-C as well.
no such thing.

Fibre is Fibre.
Twisted pair is twisted pair
Coax is coax

all can carry baseband or carriers
Signal can be pure analogue or analogue-ish signals coded with Digital=20
information
(even on the Fibre)

Multi-pair Cat3 phone cable, trunk Coax and multi-fibre optic cable can=20
all look the same on outside if designed to be strung on poles.

DOCSIS (Cable Broadband) uses CDMA or TDMA for uplink (usually TDMA) and=20
DVB-C for Downlink.
Coax can carry 5..65MHz DOCSIS uplink, 88.. 108 FM Radio, 110MHz to=20
1200MHz in 8MHz channels, any of which can be Analogue TV, DVB-C regular=20
TV mux  (multiple Digital channels), DVB-C TV mux carrying "Switched=20
Video" or DVB-C carrying DOCSIS downlink.

If you are clever in an Apartment block you can put on ONE coax per outlet
5..65MHz DOCSIS uplink, 88.. 108 FM Radio, 110MHz to 500MHz in 8MHz=20
channels (,any of which can be Analogue TV, DVB-C regular TV mux =20
(multiple Digital channels), DVB-C TV mux carrying "Switched Video" or=20
DVB-C carrying DOCSIS downlink.)with gap for Off Air reception of DAB at=20
220MHz, 500MHz to 790MHz off Air DVB-T, 790MHz to 900MHz DVB-C and=20
950MHz to 2100MHz from Satellite Dish(es) with 4x Quattro and=20
Multiswitch(es).

With suitable gear you can feed 2000 rooms from Cable Company Trunk, DAB=20
and UHF aerial and Dish
http://www.techtir.ie/tv-radio/satellite-distribution

Setup in photo used to feed 64 outlets in 32 pairs for Satellite PVR=20
(needs 2x coax). So one 1/2 the system had Cable Company feed and other=20
1/2 had off air TV/Radio aerials. The two coax feed to PVR went to a 4 x=20
f-Connector wall plate with 2x Sat/TV 900MHz Diplexers, and sockets=20
labelled Cable, Sat, Sat  TV/Radio
28E, 23E, 19E and 13E on the satellite part of system.
two sets of helical filters to combine DX aerials on mast for Off Air UK=20
TV with Local Irish TV.
So FM Radio, Broadband, DAB, Analogue and Digital Irish and UK=20
Terrestrial TV and 4 x Satellites.(if receiver has Diseqc) 28E on Port=20
one as Sky boxes don't do Disecq.

EMP-Centauri 16 (4 x quattro) + passive TV in / 16 out multiswitches =20
driven by amps and 5MHz to 2100MHz bidirectional trunk splitters. The=20
5MHz to 65MHz Cable Broadband worked fine back up through it all. Proper=20
110channel rated Broadband/TV bidirectional Cable Trunk amps and=20
splitters used to drive 1/2 of the 17th terrestrial connection on=20
Multiswitches.
--=20
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