can new cables affect my router?

[#1]

Our Sky dish was damaged and we got a new one, he wired it right into the back of the sky box and the cable runs behind my comp desk. Since then the speed is terrible and the comp is slow. is there any connection? When I go into my wireless it says speed 26mbps, sometimes down to 19mbps. It used to be 65. 

[#2]

Hi ming,
There could be a number of reasons, and the wireless channel you're connected to could be getting interference. You could use something like inSSIDer which can help you identify the clearest channel to use, this may help.
Jojo

[#3]

Is it the telephone wiring you are referring to ?
Could it be that he's wired the Sky Box directly into the master socket so that there is no ADSL filter in the circiut ? that will really affect your speeds. The Sky Box phone connection MUST be routed through an ADSL filter.

[#4]

I was thinking that, MisterW, until they mentioned the wireless speed

[#5]

Ah, so you're thinking its the downlink cable from the LNB then Jojo ?
I would have thought that's pretty well screened although I guess it does carry power for the LNB.

Quote

The signals fed from the LNB, down the cable to the digibox, lie between 950-2150 MHz. Cellphones can use 1800 MHz and their signals could get into the system or the coaxial cable.

[#6]

If the computer desk was moved to enable access for the Sky engineer could a cable for the router have been disturbed and/or damaged?
I'm sure Sky would use the best quality downlink cable from the LNB

[#7]

Quote from: MisterW

Ah, so you're thinking its the downlink cable from the LNB then Jojo ?

I was just thinking of the most obvious changes.
Jojo