Kitz ADSL Broadband Information
adsl spacer  
Support this site
Home Broadband ISPs Tech Routers Wiki Forum
 
     
   Compare ISP   Rate your ISP
   Glossary   Glossary
 
Please login or register.

Login with username, password and session length
Advanced search  

News:

Pages: [1] 2

Author Topic: Ferrites  (Read 3502 times)

Weaver

  • Senior Kitizen
  • ******
  • Posts: 11459
  • Retd s/w dev; A&A; 4x7km ADSL2 lines; Firebrick
Ferrites
« on: June 15, 2018, 06:47:09 AM »

Could someone recommend some ferrites for me? To fit on modems’ dc cables. Could you point me to a supplier?

I recall that I have been warned about this voodoo before.  ;D

--
One other thing:
Did someone recently mention putting them around DSL cables? Did I really read that right? Would that not be the last thing you would want, to block high frequency ‘noise’ ie - signal? ?Or have ?I misunderstood?
Logged

michty_me

  • Reg Member
  • ***
  • Posts: 631
Re: Ferrites
« Reply #1 on: June 15, 2018, 08:13:40 AM »

I got a few packs from Maplin many moons ago, I suspect an internet bidding website would be your best bet.
Logged

Weaver

  • Senior Kitizen
  • ******
  • Posts: 11459
  • Retd s/w dev; A&A; 4x7km ADSL2 lines; Firebrick
Re: Ferrites
« Reply #2 on: June 15, 2018, 08:14:39 AM »

Yes, I got mine from Maplin I think last time. But have they not had it now?
Logged

michty_me

  • Reg Member
  • ***
  • Posts: 631
Re: Ferrites
« Reply #3 on: June 15, 2018, 09:09:25 AM »

Unfortunately yes, They went into administration and had a big sell off of their old stock. You could try RS or Farnell but I suspect they will be more expensive than other places.
Logged

Ixel

  • Kitizen
  • ****
  • Posts: 1282
Re: Ferrites
« Reply #4 on: June 15, 2018, 01:47:30 PM »

https://www.ebay.co.uk/itm/Slow-Broadband-Problems-3M-White-Highest-Quality-Modem-Router-Lead-DSL-Cable/112852611116

There's these cables on eBay which claim to be a choked screened stranded Cat6 twisted copper pair cable. I use them on both of my connections. Don't know if there's a massive difference to be honest but figured it must be better than the cheap flat cable that's normally supplied with modems.
Logged

michty_me

  • Reg Member
  • ***
  • Posts: 631
Re: Ferrites
« Reply #5 on: June 15, 2018, 01:54:25 PM »

Interesting. I've always just used the chunky adslnation/Lindy (think that's where I got them??) Cable. Can't see them on their website anymore though.
Logged

spring

  • Reg Member
  • ***
  • Posts: 342
Re: Ferrites
« Reply #6 on: June 15, 2018, 02:27:31 PM »

I'm looking for microfilters for VDSL2, any direction?
Logged
No one knows what is the taste of the void.

burakkucat

  • Respected
  • Senior Kitizen
  • *
  • Posts: 38300
  • Over the Rainbow Bridge
    • The ELRepo Project
Re: Ferrites
« Reply #7 on: June 15, 2018, 04:16:21 PM »

Not rhetorical questions . . .

Those who use a screened (or shielded) xDSL cable, to what is the screening (or shielding) connected? And how is is connected?  :-\
Logged
:cat:  100% Linux and, previously, Unix. Co-founder of the ELRepo Project.

Please consider making a donation to support the running of this site.

Ixel

  • Kitizen
  • ****
  • Posts: 1282
Re: Ferrites
« Reply #8 on: June 15, 2018, 04:21:59 PM »

Not rhetorical questions . . .

Those who use a screened (or shielded) xDSL cable, to what is the screening (or shielding) connected? And how is is connected?  :-\

Without cutting open the cable I don't imagine I could answer that, and I don't want to do that as it would probably damage the cable :P.
Logged

burakkucat

  • Respected
  • Senior Kitizen
  • *
  • Posts: 38300
  • Over the Rainbow Bridge
    • The ELRepo Project
Re: Ferrites
« Reply #9 on: June 15, 2018, 04:29:40 PM »

Without cutting open the cable I don't imagine I could answer that, and I don't want to do that as it would probably damage the cable :P.

I can save you the trouble. The screening (or shielding) is not connected to anything. Consider the modular plugs at either end. There is no dedicated pin for such a connection.  :)
« Last Edit: June 15, 2018, 04:31:57 PM by burakkucat »
Logged
:cat:  100% Linux and, previously, Unix. Co-founder of the ELRepo Project.

Please consider making a donation to support the running of this site.

j0hn

  • Kitizen
  • ****
  • Posts: 4093
Re: Ferrites
« Reply #10 on: June 15, 2018, 04:33:39 PM »

Without cutting open the cable I don't imagine I could answer that, and I don't want to do that as it would probably damage the cable :P.
I suspect the answer is that it isn't grounded at all.

To my mind there is no such thing as a properly shielded (and grounded at both ends) dsl cable.
Logged
Talktalk FTTP 550/75 - Speedtest - BQM

Ixel

  • Kitizen
  • ****
  • Posts: 1282
Re: Ferrites
« Reply #11 on: June 15, 2018, 04:55:58 PM »

Very true, but I guess the cable doesn't claim that it's grounded either :).
Logged

4candles

  • Kitizen
  • ****
  • Posts: 3297
  • Not young enough to know everything
Re: Ferrites
« Reply #12 on: June 15, 2018, 04:59:48 PM »

I'm looking for microfilters for VDSL2, any direction?
VDSL2 should be connected via a filtered faceplate at the master socket if at all possible.
If microfilters must be used, so-called VDSL2 types are the same as any microfilter - essentially a low pass filter to pass voice and block broadband.
Logged
To err is human - to purr feline
Zen FTTC 40/10 + Digital Voice   FRITZ!Box 7530

spring

  • Reg Member
  • ***
  • Posts: 342
Re: Ferrites
« Reply #13 on: June 15, 2018, 09:31:26 PM »

VDSL2 should be connected via a filtered faceplate at the master socket if at all possible.
If microfilters must be used, so-called VDSL2 types are the same as any microfilter - essentially a low pass filter to pass voice and block broadband.
Thanks for confirming what I've heard, although when I said VDSL2 I meant qualified/high-spec.
Logged
No one knows what is the taste of the void.

Weaver

  • Senior Kitizen
  • ******
  • Posts: 11459
  • Retd s/w dev; A&A; 4x7km ADSL2 lines; Firebrick
Re: Ferrites
« Reply #14 on: June 16, 2018, 12:00:26 AM »

This thread seems to have got off topic. I myself am the worst of offenders.  ;D  could maybe split the last n posts and discuss cables elsewhere.

I asked about spec of ferrites and suppliers, in relation to dc cables. I will try eBay.
Logged
Pages: [1] 2