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Originally Posted by Acropolis
NTL now use 2 different grades of cable from DP to property these are RG6 and RG11, they uses to use RG7 but not anymore.
RG6 is good to about a distance of 100m from the dp to the house, so long as there is only 1 piece of equipment running at the property, but this distance can be reduced by many things such as, age of cable, type and quality of connectors used, any sharp bends in cable etc etc. If more than one device is been used than RG11 would really need to be pulled, but it all depends on signal reading at the time, what is good in one area is not always going to be good in another area a lot depends on the network.
RG11 can be pulled up to about 150-200m depending on how many deviced are going to be used on the pull, and how many splitters etc etc are going to be used, there is a 3.5db loss through each leg of a splitter so this has to be taken into account, but there shouldn't really be a need to have a cable pull that long anyway.
Once the cable is pulled, then there are seval taps that the cable can be connected to in the DP's all transmitting a different level, the installer will have available to them a choice of various atteniators/simulators and equalisers to put on the line to get the signal levels right and they should have a jelly bean chart to tell them what to use.
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Acropolis sorry mate but i will have to correct you before ntl get millions of people ringing them saying they want another cable putting in (ie rg11).
You can use RG6 upto 170M with 1 device and upto 4 devices within 130M of the node. On RG11 you can go to 250M with 1 device and to 200M with 4 devices.
NB devices are SACM or CATV not telco.