100M Coaxial Cable? Question

OLDGOLD · 05-01-2013, 13:21

Hi

If you want to move your superhub to a different room and need a replacement coaxial cable (is that what it's called - the one that connects to the VM box thing on the wall) due to length of current cable, can you buy any generic coaxial cable or is it a specific type.

When I had my superhub installed, I had already got my own bought coaxial cable connected, as I had previously moved my old modem. But the engineer said it wasn't up to the standard required for 100M broadband and he replaced it with one from his own kit. He said that VM's "own" cable is required to ensure I got the right speeds etc.

So, is there a coaxial cable I can purchase that will be as good as what VM provide, or will I have to get VM to visit and move the superhub for me?

Thanks

Sephiroth · 05-01-2013, 13:33

Internal coax is RG6 75 ohm impedance. Strictly speaking, the engineer was right. The cable he knows that works is his responsibility to install; he must do it. It might well be the same as yours BTW but he doesn't know this.

If your own cable isn't RG6 then you'd need to go to Maplins (or similar) and get them to make on up for you. The crucial thing (as you may know) is that the ends are properly fitted with no opportnity for RF ingress.

RB2004 · 05-01-2013, 14:00

Webro HD100 is triple shielded and exceeds VM spec it's the only easily and readily available cable that is suitable.

Dual shielded is not really VM spec, even though they seem to occasionally use RG59.

HD100 is available on ebay and correct connectors which are same as VM use

OLDGOLD · 05-01-2013, 18:15

Thanks for the replies.

I'm a novice when it comes to the technical and specification side of things.

So, if I buy some of this Webro HD100, it will be perfectly suitable for use on my superhub without any reduction in performance/quality?

Also, do these kind of cables come all assembled ready to use or do they require connectors fitting, cutting etc?

---------- Post added at 18:15 ---------- Previous post was at 16:27 ----------

Another question. Apologies if this sounds dumb.

Is the cable used for VM TV the same cable used for broadband? The reason I ask is that I used to have VM TV and still have the cable that was connected to my TiVo lying behind the TV. Could I use this to connect to my Superhub?

Sephiroth · 05-01-2013, 18:59

The cable is the same. That's because the system is the same.

RB2004 · 05-01-2013, 23:46

Yep webro hd100 will be perfectly suitable, it is better than VM own cable, because its copper shielded whereas VM stuff is aluminium shielded.

Connectors won't normally be fitted, but it's sold in cut length if required.

Seller may put connectors if required but they probably won't be VM spec ones, although VM spec ones are available to purchase separately.

Lol I should buy a roll and start selling pre cut lengths with connectors fitted...

qasdfdsaq · 06-01-2013, 00:42

VM "spec" connectors are nothing special. Pretty much standard compression plugs here, then again the cables they used in installs around here are apparently not VM "spec" either.

RB2004 · 06-01-2013, 01:32

The connectors VM use currently the manufacturers tout as having signal tight technology whereby unlike other connectors they don't loose signal if not tightened properly and therefore supposedly don't allow noise ingress either or not as much as usually expected from a loosely tightened connector

I'd imagine it was 1 reason they switched.

Because they was using 1 type of ppc ex6 connector, then even though that connector is still available they switched to the NT+ variant which has the kind of serrated nut and features this supposed signal tight technology,

The cable you are referring to which VM use is RG59 which you are correct is not triple shielded. But the vast majority of installs and even JB has previously said are done in RG6 which is triple shielded.

They used to use it, but I gather it was phased out mostly in favour of RG6 with the exception of a few installers using it for ease of installation who are in the minority... But lots of installers don't even bother to tighten the f connected either so they probably don't care about the state of a customers installation or noise ingress and leave that to networks to worry about. But doesn't make it'sright.

qasdfdsaq · 06-01-2013, 15:42

None of the installs around here have used RG6, and I've seen about 20, that includes five that were done last year, so I dunno how long ago you refer to as "used to" but they were still using it in November. In any case, the connectors don't even connect anything at all, they just bare the cable core and that directly contacts the socket. Nothing special there, the only thing the connector does is hold the cable in place.