Problems with TV signal since broadband installed

[Deisce]

Hi,
I recently got NTL broadband which entailed a man calling round to attach some form of splitter (3 way connection thingy) to my analogue TV connection in the living room and I had to buy a router to send the broadband upstairs to my PC. Now prior to the broadband installation I had a 5 metre extension co-axial cable (bought in B and Q) attached to the wall cable so my living room tv could be moved across the room. Since he came and installed broadband the signal quality has deteoriated on 3 of the channels (RTE 1, RTE 2 and TV3). Now when I remove the extension cable it works fine.
So it would appear that the splitting of the signal out of the wall point has rendered the extension cable unusable.

My questions are

1: Does broadband work out of all TV points and how easy is it to detach and refit (tools?) upstairs so I can move to bedroom TV point.

2: If one can't be done, can I buy a higher quality cable, whats it called and where can I get it?

I have tried to ring NTL tech support but its naturally busy all the time and they will just blame the extension cord out of hand

 

[Sn@kebite]

hmm broadband is annoying with tv. All i can say for definite is, try to avoid long stretches of cable as this will reduce the quality of the video.

You can buy higher quality cable called ''double-shielded'' coaxial cable,(dont know if you already have it, Sky give LQ cable for indoor, but i dont know about NTL) it's for out-door use but can be good for indoor too to increase quality etc.., sorry i dont know where to get it but i would take a wild guess that you'd get it in Maplin, but they can be quite pricy.