A general statement for how everyone should behave when trying to offer advice, we all are subject to peer review in this respect.

Hmmm .

But you still need to fix this post. It says the exact opposite of what you mean. It needs a "not" in "that does carry any ADSL frequencies". We know its a typo. SOmeone less knowledgeable could take it as fact.

Fixed

In reply to a post by professor973:

In reply to a post by BatBoy:

If you look at the circuit diagrams here, you will see the RJ11 socket is unfiltered http://www.adslnation.com/support/filters.php

If that were the case, you would end up with broadband data direct to the lughole.

I can fully understand your theory about the broadband and voice frequencies being filtered: I was also under the impression (until corrected recently by RobertoS) that voice and broadband frequencies were separated by the filter with these my incorrect assumptions:

a) only voice frequencies could pass to and from the phone.

b) only broadband frequencies could pass to and from the modem/router X

In fact both voice and broadband frequencies reach the modem/router but the modem/router ignores the voice frequencies. The filter actually only allows voice frequencies to pass to and from the phone (in effect a branch from the raw stream) and also blocks any high frequencies that could be generated by home telephone equipment, connected to filters, interfering with the broadband signal. I believe this is correct but if not hopefully I will be corrected

However maybe the filter located at the exchange does actually split the voice and broadband into two separate signals: the filtered voice frequencies going to one piece of exchange kit and the filtered broadband frequencies going to another piece of kit?

Edited by 4M2 (Sat 15-Sep-12 21:37:24)

In reply to a post by MrSaffron:

No you would not, as the RJ11 is the socket you plug the ADSL modem into. The telephone goes into the filtered socket that does NOT carry any ADSL frequencies, i.e. the low pass side

The low pass side is everything below the filter cutoff frequency. Which is an admission in my book that wanted frequencies are seperated out from others as in all filters.

In reply to a post by XRaySpeX:

You started this by disagreeing with Roberto's definitive statement. You even accept you may be wrong but refuse to listen to numerous respected posters telling you that you were wrong. You appear not to read and learn!

I have probably forgotten more than you have ever learned, though I still recognise an obtuse anorak.

In reply to a post by RobertoS:

In reply to a post by professor973:

In reply to a post by XRaySpeX:

Can't you read?

I wonder if you can you rude individual. You will see it also states the micro filter only lets a small part of the frequency spectrum through; the part needed for voice/fax

To the phone side! You are returning to your obtuse attitude previously demonstrated many times, from which you have mercifully refrained for a decent period..

This sub-thread starts with your nonsense post, and nothing you have said or linked to supports that post.

I am sorry, but I am not letting you get away with lecturing me on filters, which is a subject I teach.

??????
I don't believe that statement.

That's your problem, you don't believe anything. You are the cleverdick that spouted my last username, which happened to be my Amateur Radio callsign. So why do you find it hard to believe I may be putting students through the RAE?
Before you fall off your high horse, how about a mention that a channel clash of cordless phone frequeccies can easily fell a router. Something I learned and remembered.

Edited by professor973 (Sat 15-Sep-12 21:04:54)

Post deleted by MrSaffron

Which type of cordless phones? DECT should not affect 802.11 wireless due to the frequencies used.

US model cordless phones do use 2.4GHz if memory serves me right though. That is a joy of an unlicensed spectrum also used by baby alarms and video senders.

That's your problem, you don't believe anything. You are the cleverdick that spouted my last username.

You denied at least twice that was your previous nick, rather vehemently. So you have form on telling untruths.

So why do you find it hard to believe I may be putting students through the RAE?

First, you repeatedly say you are a full-time carer. Usually to excuse your descent into foul language and threats. The post I'm replying to seems to be on the verge of your doing that.

Second, you didn't mention RAE. Which is ...

... Ah - it's 16th on this list. Which means you may know a bit about some sort of filters used in amateur radio, but apparently zilch about ADSL filters which were the subject of discussion. So with luck you aren't teaching them something that is incorrect.

Resorts to entry eight in the list.