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uk.telecom.broadband (UK broadband) (uk.telecom.broadband) Discussion of broadband services, technology and equipment as provided in the UK. Discussions of specific services based on ADSL, cable modems or other broadband technology are also on-topic. Advertising is not allowed.

ADSL Filter - before or after Surge Protector ?



 
 
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  #1  
Old December 20th 05, 11:45 PM posted to uk.telecom.broadband
shopping
external usenet poster
 
Posts: 6
Default ADSL Filter - before or after Surge Protector ?


Wondering whats best signal quality wise

Surge Protector has a phone input so i'm wondering is it best
to plug from the wall socket straight into the surge then plug the
filter into the surge output ?

Thanks




  #2  
Old December 21st 05, 12:55 AM posted to uk.telecom.broadband
R. Mark Clayton
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Posts: 699
Default ADSL Filter - before or after Surge Protector ?


"shopping" wrote in message
news

Wondering whats best signal quality wise

Surge Protector has a phone input so i'm wondering is it best
to plug from the wall socket straight into the surge then plug the
filter into the surge output ?

Thanks





Well an ADSL filter is usually £5 so if it is first then who cares if it
gets fried. OTOH you would need two surge arrestors one in the phone line
(but then handsets are cheap so who cares if they get fried) and one in the
ADSL.

In theory the surge arrestor packs an in parallel capacitor, so may drop a
few dB of the high frequency ADSL signal...


  #3  
Old December 21st 05, 01:30 AM posted to uk.telecom.broadband
shopping
external usenet poster
 
Posts: 6
Default ADSL Filter - before or after Surge Protector ?


i'm not thinking cost more signal strength stuff and to make sure a surge
problem is contained

point taken that the loss of an asl filter isnt a big panic

if the surge drops it a few db , will it do that whatever sequence is used ?

maybe i need to get out more ? :-)




"R. Mark Clayton" wrote in message
...

"shopping" wrote in message
news

Wondering whats best signal quality wise

Surge Protector has a phone input so i'm wondering is it best
to plug from the wall socket straight into the surge then plug the
filter into the surge output ?

Thanks





Well an ADSL filter is usually £5 so if it is first then who cares if it
gets fried. OTOH you would need two surge arrestors one in the phone line
(but then handsets are cheap so who cares if they get fried) and one in
the ADSL.

In theory the surge arrestor packs an in parallel capacitor, so may drop a
few dB of the high frequency ADSL signal...



  #4  
Old December 21st 05, 03:18 AM posted to uk.telecom.broadband
w_tom
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Posts: 41
Default ADSL Filter - before or after Surge Protector ?

You are assuming things that are inaccurate. You are
assuming a surge protector somehow stops or blocks what three
miles of sky could not. Surge protectors obviously don't do
that. Ineffective plug-in protectors hope you make those
inaccurate assumptions.

A protector is often an DSL eater. What does the filter
do? Keeps the DSL signal for seeing anything after the
filter. Filter should protect DSL signal from that protector.

In North America, effective protectors are installed, for
free, by the telco because 'whole house' protectors are so
effective and so inexpensive. A protector does nothing
effective without a 'less than 3 meter' connection to earth
ground. Where does your plug-in protector mention that? They
hope you never learn what an effective protector does - why
they can be installed for free and why earthing is so
essential.

The concepts of protection are well proven even in 1930s
science papers. The concepts also discussed in a recent
discussion entitled "Dead Computer :-)" about 18 Dec 2005 in
alt-windows-me at:
http://tinyurl.com/99ho2

Numerous effective solutions are available from companies
such as Furse and Polyphaser. There is no effective plug-in
solution. Protection is about earthing each phone wire only
during a destructive transient. For xDSL, a protector must
also be low capacitance to not 'eat' shortwave radio
frequencies.

shopping wrote:
Wondering whats best signal quality wise

Surge Protector has a phone input so i'm wondering is it best
to plug from the wall socket straight into the surge then plug the
filter into the surge output ?

  #5  
Old December 21st 05, 07:07 AM posted to uk.telecom.broadband
Dave Stanton
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Posts: 457
Default ADSL Filter - before or after Surge Protector ?


Why do you feel you need a surge protector in the first place ?

Dave
  #6  
Old December 21st 05, 09:12 AM posted to uk.telecom.broadband
[email protected]
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Posts: 735
Default ADSL Filter - before or after Surge Protector ?


"R. Mark Clayton" wrote in message
...

In theory the surge arrestor packs an in parallel capacitor, so may drop a
few dB of the high frequency ADSL signal...


In theory a capacitor across the line isn't a surge protector.
The one fitted (do they still fit them?) in the master socket is a gas
discharge device that drops to zero resistance if a high voltage spike
occurs and that removes the biggest part of the spike. (There may be a
solid-state alternative now but its been 20years since I took a master
socket apart.)


  #7  
Old December 21st 05, 09:33 AM posted to uk.telecom.broadband
john
external usenet poster
 
Posts: 7
Default ADSL Filter - before or after Surge Protector ?


"shopping" wrote in message
news

Wondering whats best signal quality wise

Surge Protector has a phone input so i'm wondering is it best
to plug from the wall socket straight into the surge then plug the
filter into the surge output ?

Thanks



All phone master sockets have surge protectors so you don't need a second
one. It's just a gimmick to make it look different from other products.


  #8  
Old December 21st 05, 10:00 AM posted to uk.telecom.broadband
shopping
external usenet poster
 
Posts: 6
Default ADSL Filter - before or after Surge Protector ?


because . . . there are surges

and theyre not good !

"dave stanton" wrote in message
news

Why do you feel you need a surge protector in the first place ?

Dave



  #9  
Old December 21st 05, 10:12 AM posted to uk.telecom.broadband
shopping
external usenet poster
 
Posts: 6
Default ADSL Filter - before or after Surge Protector ?


this has turned out a bit more complicated than i thought !

would i be right in judging the concensus opinion is - don't bother ?



"john" wrote in message
...

"shopping" wrote in message
news

Wondering whats best signal quality wise

Surge Protector has a phone input so i'm wondering is it best
to plug from the wall socket straight into the surge then plug the
filter into the surge output ?

Thanks



All phone master sockets have surge protectors so you don't need a second
one. It's just a gimmick to make it look different from other products.




  #10  
Old December 21st 05, 11:16 AM posted to uk.telecom.broadband
Rik
external usenet poster
 
Posts: 1
Default ADSL Filter - before or after Surge Protector ?


"dave stanton" wrote in message
news

Why do you feel you need a surge protector in the first place ?

Dave


Think about it...... Why do you think he feels he needs a surge protector?
Are you daft or something?

Fitting a surge protector is a good move. I have fitted them to several
computers and networks over the last few years.
They protect the system from dangerous spikes and surges on the mains
supply.


 




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