The induction noise is due to it not being a twisted pair, replacing for a modern, twisted pair will improve the internet speed and reduce the background / induction noiseA bit of an aside but the several metre long cable from my GPO box (yes GPO) to the BT socket inside is this:
View attachment 310635
Isolating both ends and continuity is good on each core but the IR between the two was circa 250MOhm. The cable is dead old and I'm assuming braking down / a bit damp.
Wondering if replacing it would 1) cure the hum on the landline we sometimes get and 2) improve our internet speed / quality.
But with what, a bit of similar CSA t&e?
It's twisted pair, but only one pair - good practice is to have required pairs +25% in whole numbers (obviously!). It's also expensive.
Personally, if it's the external cable I'd be reporting noise on the line / dropouts when windy/wet/cold weather, that usually provokes a drop wire change. if it's on your side of the socket, why do you need dropwire? there's lots of options - even CAT5+ would be better than what you have.
Yep, that's it - but why do you want to replace it yourself when it's Openreach that have the responsibility? Honestly, they'd take one look at the Fig.8 and have the drum of 1308 out of the van before you'd found the hobnobs....This?
Manufactured in England by BT CABLES Ltd this cable features the current Openreach wiring colour code with 2 twisted (CW1308 spec - loose twist) pairs (blue/orange and green/brown). Do not confuse this cable with cheap foreign made TINNED COPPER COVERED ALUMINIUM conductor made from recycled...www.ebay.co.uk
Yep, that's it - but why do you want to replace it yourself when it's Openreach that have the responsibility? Honestly, they'd take one look at the Fig.8 and have the drum of 1308 out of the van before you'd found the hobnobs....
You're getting to techy with them, keep it simple, report a poorly-defined fault, always on the voice line, along the lines of noise / crackling/ humming sporadically in wet / windy / cold weather, that'll get 'em out!Thanks am I correct in thinking what I have is "Drop Cable No1"?
The are cheeky gits, BT, twice before when there has been an exchange fault (nothing to do with the cable I'm on about) their goto stance when I report a fault is that their tests suggest it is in or within my property and that they'll only come out if I agree to pay £X should a fault be found. I always counter saying I've checked continuity and IR of the incoming cable so they can basically FO and I suggest they look further afield. Both times they've found a fault a couple of miles away. In the bottom of a valley here we often get the boxes on the roadside flooded.
The blue pair is conventional for the line. Orange for the ring circuit and the other colours can be used for additional lines or other circuits.
Ta, this is to replace the incoming 2-core, fig of 8 cable that's breaking down.
So I've four cores on this new stuff which I figure I should double up.