Internet connected thru the phone system ADSL

Submitted: Thursday, Mar 31, 2011 at 16:39
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Just upgraded the connection here and found that the phone line that the ADSL Modem is connected to has a bit of a buzz, time to run a new wire. The tech's are going to run a Cat6 computer cable which has 4 twisted pairs inside and I thought it would be better to run two pair in parallel rather than one, that should theoretically halve the resistance, provide a backup if one pair happens to fail and also give an overall better result. Does that sound right, or by halving the resistance am I going to end up with a worse result?

What dya reckon ?
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Reply By: Dust-Devil - Thursday, Mar 31, 2011 at 16:50

Thursday, Mar 31, 2011 at 16:50
Yeah! right. I do believe I know what day it is tomorrow.
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Follow Up By: Bonz (Vic) - Thursday, Mar 31, 2011 at 17:58

Thursday, Mar 31, 2011 at 17:58
Thats tomorrow DD this is a REAL question for today, bit like running 2 6mm cables to the back of the Cruiser instead of one. Although I dont think the Corona effect works for DC
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Follow Up By: Who was that again? (Vic) - Thursday, Mar 31, 2011 at 21:51

Thursday, Mar 31, 2011 at 21:51
Bonz, I agree with DD. I can say though it depends how many Coronas you need to have the effect, DC or AC
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Follow Up By: Bonz (Vic) - Friday, Apr 01, 2011 at 15:27

Friday, Apr 01, 2011 at 15:27
John, I mean the effect that is based around electron movement in a copper conductor which is mostly around the outsiode of the conductor.

Diffent to DD;s Corona effect with is alcohol related
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Reply By: vk1dx - Thursday, Mar 31, 2011 at 16:56

Thursday, Mar 31, 2011 at 16:56
When you halve the resistance you also halve the bandwidth.

Yes excellent idea. It will filter out all the big memory consuming ads. They need a wide bandwidth to download on.

Phil
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Follow Up By: Dust-Devil - Thursday, Mar 31, 2011 at 17:43

Thursday, Mar 31, 2011 at 17:43
Phil


Does that include the XXXX rated stuff.
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Follow Up By: Bonz (Vic) - Thursday, Mar 31, 2011 at 17:55

Thursday, Mar 31, 2011 at 17:55
Dont worry about that DD rubbish Phil. How do I halve the bandwidth? I am talking about the run from the Krone box to the phone outlet, which is about 8 metres, actually at that length it probably wouldnt make a difference
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Follow Up By: vk1dx - Thursday, Mar 31, 2011 at 18:49

Thursday, Mar 31, 2011 at 18:49
Dust devil (unknown name)

I have a pair of halving sheers right here. Courtesy of The Jackie Howe Incorporated. They should be fast enough to get it right the first time. I got them free when I visited them when they first opened.

Bonz

Don't bother. Such a short distance its not worth it. I am thinking that this may be a commercial installation and it may be a duplex circuit. If duplex then you will not have enough wires. You would have to run two cat 5 cables. Again don't bother.

Phil
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Reply By: Notso - Thursday, Mar 31, 2011 at 17:27

Thursday, Mar 31, 2011 at 17:27
Let the techs do it!
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Follow Up By: Dust-Devil - Thursday, Mar 31, 2011 at 17:40

Thursday, Mar 31, 2011 at 17:40
Touche!

My thoughts also.
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Follow Up By: Bonz (Vic) - Thursday, Mar 31, 2011 at 17:59

Thursday, Mar 31, 2011 at 17:59
I want to know as much as the tech
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Follow Up By: vk1dx - Thursday, Mar 31, 2011 at 22:57

Thursday, Mar 31, 2011 at 22:57
Then start studying. I hope you are up on physics, chemistry, english, history and most of all mathematics. To be a real Electronics and Communications Technician its three years full time study at a university. I did my diploma at RMIT in Melbourne. Now if you are talking about someone who just runs network cables, then its just a few days study on how to hold a screwdriver and how to read an instruction. Anyone can run a cable.

I spent at least 40% of the 30 + years that I worked as a, up to Senior Technical Officer, to keep up with the latest technology. A technician is the one who fixes up the engineers stuff ups and makes the thing work.

I get so cheesed off when you hear that someone has the title technician and all they have done is a lousy twelve month course on Windows Networks. Or what about a tyre technician. Ha!!!!

As I said - start studying. And when you know all about fourier transforms then you can really understand how a signal passes along a pair of twisted wires and at what distance it is best to terminate the coax of your UHF antenna.

You asked for that one hey! Chuckle. Bonz, I have been waiting years to say that.

Phil
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Follow Up By: Member - Craig F (WA) - Friday, Apr 01, 2011 at 12:16

Friday, Apr 01, 2011 at 12:16
HI vk1dx,
With all due respect. My expectations of my Tyre Technician is to supply and fit the correct tyre that suits its application. I go to One place only. My reliance on well fitted tyres is parimount to my well being and safety. The person I use has a lifetime of experience.
To belital somebodys chosen field may not be your intent. In all facits of life you have those that excell at what they do.
As for the OP I too like to be well informed and the best way to do this is to ask questions.

Regards
Craig
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Follow Up By: vk1dx - Friday, Apr 01, 2011 at 12:37

Friday, Apr 01, 2011 at 12:37
Craig

A tyre technician does not have to study for three or four years at uni to learn how to fit tyres does he. He does not need to get a diploma or degree and then carry out self paced to fill in all, the vagaries of engineering that they did not cover at uni and then study heaps each year from then on to keep up with the latest engineering advances now does he.

That's a bit like comparing marbles with satellites.

Phil
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Follow Up By: Member - Craig F (WA) - Friday, Apr 01, 2011 at 13:37

Friday, Apr 01, 2011 at 13:37
Phil,
The point I am trying to make is that a Neurosurgeon for example may say 3yrs at Uni try 7..
In regards to marbles with satellites I suppose that depends on what one requires.
Depending on your interpretation and choice of dictionary the meaning of "Technician" fits a myriad of applications.
I have “Engineer” at the end of my title and am more than happy to call a Tyre Technician a Technician. What carries the weight is what is written before as when one is looking for somebody to fill a role that is what they look for.
It is not my title that keeps me employed.
Regardless of how long it takes to learn a trade it is how well that you apply it that earns the stature.
More than once around the office it has been said you could get rid of half the Engineers and we would still operate but without the Coffee machine Technician the office comes to a stop.. He fixes the machine and we can not does this not make him a specialist? As he has specific training to fix this device both mechanically and electronically (yes it has a board in it).

Craig
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Follow Up By: vk1dx - Friday, Apr 01, 2011 at 14:12

Friday, Apr 01, 2011 at 14:12
The point I am making is that the title "Technician" has become to mean nothing special. I used to be proud to say I was qualified as a technical officer and then Senior Technical Officer. Of course the pay and extras were excellent and that helped.

We were doing a lot of very specialised highly sensitive work for some government agencies who shall remain nameless and our id cards originally listed us as "Engineers". And after quite a few complaints (internal) the word was removed. And rightly so. We were not engineers. We were techs, allbeit quite senior. We were quite happy with that. Why then can someone who only does a few months course be called an Engineer. As in Customer Service Engineer. It belittled all the time and effort that you put into your degree.

We have gone overboard with titles. I worked hard over 30+ years to get to the position of Senior Technical Officer in an international aerospace company and for someone to be called one after a few months is a little annoying to say the least. And for someone to say "I want to know all a tech does" it appears that the person has not the faintest idea of how much effort it takes to become a "tech". Kind of looks like a tech purchased his qualifications at Woolies.

Now I am a Mr. Retired that is.

Phil
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Follow Up By: Member - Craig F (WA) - Friday, Apr 01, 2011 at 15:21

Friday, Apr 01, 2011 at 15:21
I noted quite a while ago both your background and your retirement. I new this from a former post where your background was used to answer question raised in a thread.
I believe a lot of titles have been derived due to the need to pigeon hole people when setting up HR and payroll databases.
With IR the way it is we also need to sit somewhere in the scheme of things. For example a Vehicle Mechanic is a rarity they are now called automotive technician and do not have the same skill set.
On saying this I stand by what sits in front as what carries the weight.
Electronics and Communications Technician.
Coffee Machine Technician.
It is obvious who has had the more intensive training.

This conversation is not dissimilar to one I have had many a time regarding apprentices. When my grandfather left school you were indentured to a company and at times paid for your training. In my day, 4 yrs and paid,
Today 2 years and an employer needs a very good reason not to sign you off.

Yet all are Tradesmen.

Regards
Craig
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Follow Up By: Bonz (Vic) - Friday, Apr 01, 2011 at 15:29

Friday, Apr 01, 2011 at 15:29
So a Associate Diploma in Electrical Engineering, is about the same??
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Follow Up By: vk1dx - Friday, Apr 01, 2011 at 15:38

Friday, Apr 01, 2011 at 15:38
Sorry Bonz.

Whats your point?

I was responding to comment about a Tyre Technician. Any diploma would leave the so called "technicians" these days for dead. And that's why they should NOT be called technicians.

Phil
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Follow Up By: vk1dx - Friday, Apr 01, 2011 at 15:43

Friday, Apr 01, 2011 at 15:43
Craig

Too right I am a tradesman. And proud of my study achievement. I gather that you may also be the same.

What would engineers do without us. We who fix their errors and make the bludger, I should say their design, work.

Phil
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Follow Up By: Bonz (Vic) - Friday, Apr 01, 2011 at 15:43

Friday, Apr 01, 2011 at 15:43
you said this Phil ....

vk1dx posted:
Then start studying. I hope you are up on physics, chemistry, english, history and most of all mathematics. To be a real Electronics and Communications Technician its three years full time study at a university. I did my diploma at RMIT in Melbourne.

And I did MY three year assoc diploma at Collingwood Tech and RMIT.

Wasnt having a go at tyre techs or anything else ... you two guys can slog that out

Alls I was saying is that I have done the course, physics chem and maths, and now I understand that twisted wire stuff mate. Wouldnt mind catching up with you one day I reckon we'd have a heap to talk about.

All the best

Bonz
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Follow Up By: vk1dx - Friday, Apr 01, 2011 at 15:52

Friday, Apr 01, 2011 at 15:52
Bonz

I had a ball. Thoroughly enjoyed the work and was luck enough to have my own team in the end. Visit, design and implement a complete analogle and also later digital site from zip to operational.

And the blues I used to have with the young engineers straight out of uni. You would enjoy being on the side. A lot of theory with nothing between the ears. Do you know the type? But a years or so later they were a good member of the team.

Tis enough guys. Have a good day.Check this trip out:Just a smidgin on something we splurged on

And I shall leave you to it.

A good chat.

Phil
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Reply By: Member - Bill S (VIC) - Thursday, Mar 31, 2011 at 18:00

Thursday, Mar 31, 2011 at 18:00
Hi Bonz,

Running pairs in parallel for your application won't do anything except double the resistance.

Make sure the techs test your network and things should be fine.

Bill S.
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Follow Up By: Bonz (Vic) - Thursday, Mar 31, 2011 at 18:05

Thursday, Mar 31, 2011 at 18:05
Double it? I thought two resistances in parallel halved it?
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Reply By: Member - Robert R1 (SA) - Thursday, Mar 31, 2011 at 19:00

Thursday, Mar 31, 2011 at 19:00
Bonz,

When ADSL gets upgraded to ADSL2 there is nearly always a buzz in the telephone. You need to install an ADSL Central Filter which will fix the problem. I use a Model C10100E ADSL Remote Splitter from C10 Communications. Telstra were recommending a C10 In-line filter at each telephone socket but it doesn't work.

You will need to get someone with a Telecommunications Cablers License to install it for you.

Regards,
Bob
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Follow Up By: Bonz (Vic) - Thursday, Mar 31, 2011 at 21:23

Thursday, Mar 31, 2011 at 21:23
Hmm I have filters on the lines but yes the buzz is there now. Better arrange one of these gizmo's
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Follow Up By: Member - John (Vic) - Thursday, Mar 31, 2011 at 23:10

Thursday, Mar 31, 2011 at 23:10
Thats the issue I have also from upgrading to ADSL2.
I have not got around to fitting a Central Splitter either as yet.
The small ones that Telstra supply don't fix the issue I even tried to double them up as was suggested on the web after a Google search of the problem.
Its a change in line frequency that causes the issue if my memory serves me??

Geoff, do a search using ADSL Line noise and a few variations thereof and have a read.

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Follow Up By: Bonz (Vic) - Friday, Apr 01, 2011 at 15:31

Friday, Apr 01, 2011 at 15:31
Thanx John, I will google that. I got onto a central splitter that should arrive here next week
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Reply By: Allan B (Sunshine Coast) - Thursday, Mar 31, 2011 at 19:14

Thursday, Mar 31, 2011 at 19:14
Goddam it, I type up a carefully worded response, press the "submit" button..... and get a "SERVER MAINTENANCE" screen and my response is lost. Why does David have to do maintenance during peak times? Grrrrrrrr.

Anyway Bonz, my contribution is that it is not good practice to parallel pairs of Cat6 cable or any digital transmission cables. Undesirable artefacts can be generated in paralleled pairs of data transmission cables. In any case, the reduced resistance would have insignificant affect on the total loop resistance (impedance actually) so there is no advantage.

In reality, you would probably not experience any signal difficulty but neither would you realise any improvement.

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Follow Up By: Member - Bruce C (NSW) - Thursday, Mar 31, 2011 at 19:30

Thursday, Mar 31, 2011 at 19:30
Hi Allan,

I often get a similar problem, a time out problem I think and lose the connection momentarily. I am on satellite.

What I do in those situations I use the back space key to go back to the page I was writing on and copy that which I had just written and then open up the reply page or whatever and paste my words into it.

Hope this helps you in the future.
Got to be smarter than the average computer.

Cheers, Bruce.
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Follow Up By: Dust-Devil - Thursday, Mar 31, 2011 at 20:05

Thursday, Mar 31, 2011 at 20:05
I think it's some sort of time out thing Allan.

So just do as Bruce suggested or copy it before you submit it
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Follow Up By: Allan B (Sunshine Coast) - Thursday, Mar 31, 2011 at 20:19

Thursday, Mar 31, 2011 at 20:19
Hi Bruce, I did try back-step but it had gone! Its now circling the galaxy forever.

And Dust Devil, yes I did "copy" the second effort as insurance. But surely I do not need to do that for every transmission on this forum?

Cheers
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Follow Up By: Bazooka - Thursday, Mar 31, 2011 at 23:55

Thursday, Mar 31, 2011 at 23:55
Allan

The trick is to tick the Auto Logon box at bottom of Logon frame.
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Reply By: MrBitchi (QLD) - Thursday, Mar 31, 2011 at 19:25

Thursday, Mar 31, 2011 at 19:25
Just let the cabelers do it their way. Over 8mt you wont see any signal degradation, and as cat6 is fully sheilded, nor will you get any external interference. The standards for cables and wiring are designed by the experts so just leave them be or yes, you will just end up with a worse result.

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Reply By: Isuzumu - Thursday, Mar 31, 2011 at 19:44

Thursday, Mar 31, 2011 at 19:44
Don't worry about it Bonz you will have the NBN hooked up soon soon soon soon, now six years has gone quick hahahahahahaha
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Reply By: Dust-Devil - Thursday, Mar 31, 2011 at 19:58

Thursday, Mar 31, 2011 at 19:58
People

I hope you realise that this Sir Bonza-a-lot of the Victorian Western District that you are trying to advise.

He is the only person I know who can impale himself on a roof gutter, and cause a circular saw to jump up and take the top of a finger off, just by looking at the said items.

Also once he gets a bee in his bonnet re whatever, its not over until he either lacerates, smashes or does serious harm to himself.

So! please do not encourage him in this current lunatic idea which I hope he will now leave to the Experts.

I can just see him under the house now, looking like one of those cartoon characters that has just stuck a finger in a light socket, or being attacked by an infestation of red back spiders.



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Follow Up By: Bonz (Vic) - Thursday, Mar 31, 2011 at 21:12

Thursday, Mar 31, 2011 at 21:12
You've had a great night tonite mate hahahaha
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Reply By: Robin Miller - Friday, Apr 01, 2011 at 14:51

Friday, Apr 01, 2011 at 14:51
Hi Bonz

Your stirring them up .

Its not a good idea to parallel the two lines.
It is a good idea to have a spare though.

When you parallel the two lines you will lower the resistance.

The lines though are transmission lines and as such have a characteristic impedance , like the coax on a radio.

As such they work best when both the source and load impedances (ac resistance) match the characteristic impedance of the line.

You can get cable which has lower resistance and also wound with matching twists such that it has lower losses all round and still retains the same correct impedance.
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Follow Up By: Bonz (Vic) - Friday, Apr 01, 2011 at 15:34

Friday, Apr 01, 2011 at 15:34
Exactly what I reckoned Robin, was a great thread for info though, and old Dusty got wound up and thats always a bonus.
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