Re: Powerline networking

In article <(E-Mail Removed)>, Jef Roe says...
>
> Am I missing something on this networking principle...
>
> Typically a kit contains one 14Mbps plug and one 85Mbps plug. Which to me
> implies I will be choked to 14Mbps.
>
> Why does it get so much praise when this is 1/4 of my wireless system.

Because it allows stupid people to connect their computer upstairs to
the hub downstairs. It also allows anyone with a HF receiver within a
500 yard radius to monitor the network traffic as well but that
"feature" isn't advertised.

--
Conor
www.notebooks-r-us.co.uk

I'm not prejudiced. I hate everybody equally.

In article <Aq-(E-Mail Removed)>, LR says...
>
> On 17/10/2009 12:26, Conor wrote:
> > It also allows anyone with a HF receiver within a
> > 500 yard radius to monitor the network traffic as well but that
> > "feature" isn't advertised.
> >
> Do you have a ref for this.

Yes.
> Given that the bandwidth used by most HF
> receivers is small compared to the Band used by Homeplug and the fact
> that HomeplugAV does have AES encryption I think it is highly unlikely
> for anything meaningful to be obtained, the modulation used is also
> different.
> A HF receiver may be tuned to one of the bands and may be subject to
> interference

No - clear signal.

> but the newer homeplug devices have notch filters include
> to reduce signal levels on some of the bands to try and reduce this.
> see para 4.3

BWAHAHA.

I've put in 3 complaints to Ofcom myself about PLT interference on
amateur radio bands.


--
Conor
www.notebooks-r-us.co.uk

I'm not prejudiced. I hate everybody equally.

On Sat, 17 Oct 2009 15:36:09 +0100
Conor <(E-Mail Removed)> wrote:

> In article <Aq-(E-Mail Removed)>, LR says...

> > but the newer homeplug devices have notch filters include
> > to reduce signal levels on some of the bands to try and reduce this.
> > see para 4.3
>
> BWAHAHA.
>
> I've put in 3 complaints to Ofcom myself about PLT interference on
> amateur radio bands.
>
>
I noticed this a couple of weeks back
http://www.theregister.co.uk/2009/10/01/rsgb_ofcom/

In article <20091017153926.7db3ea26@bluemoon>, Rob Morley says...
>
> On Sat, 17 Oct 2009 15:36:09 +0100
> Conor <(E-Mail Removed)> wrote:
>
> > In article <Aq-(E-Mail Removed)>, LR says...
>
> > > but the newer homeplug devices have notch filters include
> > > to reduce signal levels on some of the bands to try and reduce this.
> > > see para 4.3
> >
> > BWAHAHA.
> >
> > I've put in 3 complaints to Ofcom myself about PLT interference on
> > amateur radio bands.
> >
> >
> I noticed this a couple of weeks back
> http://www.theregister.co.uk/2009/10/01/rsgb_ofcom/

Its farcical considering Ofcom set up a dedicated PLT complaints page
and team and the field engineer who visited said it formed a large
portion of his work.

--
Conor
www.notebooks-r-us.co.uk

I'm not prejudiced. I hate everybody equally.

In article <(E-Mail Removed)>, LR says...
>
> On 17/10/2009 15:36, Conor wrote:
> > In article<Aq-(E-Mail Removed)>, LR says...
> >>
> >> On 17/10/2009 12:26, Conor wrote:
> >>> It also allows anyone with a HF receiver within a
> >>> 500 yard radius to monitor the network traffic as well but that
> >>> "feature" isn't advertised.
> >>>
> >> Do you have a ref for this.
> >
> > Yes.
> So where is it?

Google PLT interference.

> >> Given that the bandwidth used by most HF
> >> receivers is small compared to the Band used by Homeplug and the fact
> >> that HomeplugAV does have AES encryption I think it is highly unlikely
> >> for anything meaningful to be obtained, the modulation used is also
> >> different.
> >> A HF receiver may be tuned to one of the bands and may be subject to
> >> interference
> >
> > No - clear signal.
> So what type of signal is it?
>
FM data.

> >> but the newer homeplug devices have notch filters include
> >> to reduce signal levels on some of the bands to try and reduce this.
> >> see para 4.3
> >
> > BWAHAHA.
> >
> > I've put in 3 complaints to Ofcom myself about PLT interference on
> > amateur radio bands.
> >
> >
> Did the devices have notch filters or not?

Yes.

> What was Ofcoms response?

Field engineer came and visited me, went to offending house, forced BT
to remove them.


--
Conor
www.notebooks-r-us.co.uk

I'm not prejudiced. I hate everybody equally.

In article <(E-Mail Removed)>, LR says...
>
> On 17/10/2009 18:22, Conor wrote:
> > In article<(E-Mail Removed)>, LR says...
> >>
> >> On 17/10/2009 15:36, Conor wrote:
> >>> In article<Aq-(E-Mail Removed)>, LR says...
> >>>>
> >>>> On 17/10/2009 12:26, Conor wrote:
> >>>>> It also allows anyone with a HF receiver within a
> >>>>> 500 yard radius to monitor the network traffic as well but that
> >>>>> "feature" isn't advertised.
> >>>>>
> >>>> Do you have a ref for this.
> >>>
> >>> Yes.
> >> So where is it?
> >
> > Google PLT interference.
> What has interference got to do with the ability to monitor network traffic?

DYOH.


--
Conor
www.notebooks-r-us.co.uk

I'm not prejudiced. I hate everybody equally.

"Conor" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> In article <Aq-(E-Mail Removed)>, LR says...
>>
>> On 17/10/2009 12:26, Conor wrote:
>> > It also allows anyone with a HF receiver within a
>> > 500 yard radius to monitor the network traffic as well but that
>> > "feature" isn't advertised.
>> >
>> Do you have a ref for this.
>
> Yes.
>> Given that the bandwidth used by most HF
>> receivers is small compared to the Band used by Homeplug and the fact
>> that HomeplugAV does have AES encryption I think it is highly unlikely
>> for anything meaningful to be obtained, the modulation used is also
>> different.
>> A HF receiver may be tuned to one of the bands and may be subject to
>> interference
>
> No - clear signal.
>
>> but the newer homeplug devices have notch filters include
>> to reduce signal levels on some of the bands to try and reduce this.
>> see para 4.3
>
> BWAHAHA.
>
> I've put in 3 complaints to Ofcom myself about PLT interference on
> amateur radio bands.
>
>
> --
> Conor

You don't even have an amateur radio licence, so they will take no notice.
I have a class A and use filters that reduce PLT. What you are listening to
is harmonics of wireless networks and processor noise, even fluorescents.
If you had any technical knowledge it would help you. Stay with CB.

"Conor" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> In article <(E-Mail Removed)>, LR says...
>>
>> On 17/10/2009 15:36, Conor wrote:
>> > In article<Aq-(E-Mail Removed)>, LR says...
>> >>
>> >> On 17/10/2009 12:26, Conor wrote:
>> >>> It also allows anyone with a HF receiver within a
>> >>> 500 yard radius to monitor the network traffic as well but that
>> >>> "feature" isn't advertised.
>> >>>
>> >> Do you have a ref for this.
>> >
>> > Yes.
>> So where is it?
>
> Google PLT interference.
>
>> >> Given that the bandwidth used by most HF
>> >> receivers is small compared to the Band used by Homeplug and the fact
>> >> that HomeplugAV does have AES encryption I think it is highly unlikely
>> >> for anything meaningful to be obtained, the modulation used is also
>> >> different.
>> >> A HF receiver may be tuned to one of the bands and may be subject
>> >> to
>> >> interference
>> >
>> > No - clear signal.
>> So what type of signal is it?
>>
> FM data.
>


Jesus Christ! Do you know what FM is? Just because you can resolve
a signal using a particular mode doesn't mean it is that mode.


>> >> but the newer homeplug devices have notch filters include
>> >> to reduce signal levels on some of the bands to try and reduce this.
>> >> see para 4.3
>> >
>> > BWAHAHA.
>> >
>> > I've put in 3 complaints to Ofcom myself about PLT interference on
>> > amateur radio bands.
>> >
>> >
>> Did the devices have notch filters or not?
>
> Yes.
>
>> What was Ofcoms response?
>
> Field engineer came and visited me, went to offending house, forced BT
> to remove them.
>

Rubbish. If they were illegal shops would be forced to stop selling and
companies would be prosecuted. The devices are legal in the UK.


>
> --
> Conor
> www.notebooks-r-us.co.uk
>
> I'm not prejudiced. I hate everybody equally.

In article <hbdq2t$djr$(E-Mail Removed)>, Roger says...

> You don't even have an amateur radio licence,

Yes I do.


> so they will take no notice.

Yes they did.

> I have a class A

No such thing and hasn't been for half a decade.

> and use filters that reduce PLT.

And also what you can hear on that band.

> What you are listening to
> is harmonics of wireless networks

Nope. The strongest signal was not a harmonic.

> and processor noise, even fluorescents.
> If you had any technical knowledge it would help you.

I seem to know more than many hams, including you.




--
Conor
www.notebooks-r-us.co.uk

I'm not prejudiced. I hate everybody equally.

In article <hbdqfb$dur$(E-Mail Removed)>, Roger says...

> Jesus Christ! Do you know what FM is?

Yes.

> Just because you can resolve
> a signal using a particular mode doesn't mean it is that mode.
>
The Ofcom field engineers equipment confirmed it.
> > Field engineer came and visited me, went to offending house, forced
BT
> > to remove them.
> >
>
> Rubbish.

PLease feel free to email (E-Mail Removed) who is the field
engineer for my area.

> If they were illegal shops would be forced to stop selling and
> companies would be prosecuted. The devices are legal in the UK.

Because they've CEPT certification which is a SELF CERTIFICATION and
only requires ONE device to certify. BT have warehouses full of them and
Ofcom are afraid to go up against BT for something that'll affect maybe
50,000 people at the most.

Once they got put into real world use, it became apparent that they had
to increase the TX power in order to work. This they did which broke the
spec they'd been certified with to the point they're transmitting at +
20dB over their certified spec.

You claim to be an amateur radio operator but you fail to show any
knowledge at all about what is the most singular serious issue to HF
today. It is plastered all over the internet. RSGB are taking OFCOM to
court over their failure to enforce the law with PLT devices.

There's only one amateur radio operator here it would seem and it ain't
you.

--
Conor
www.notebooks-r-us.co.uk

I'm not prejudiced. I hate everybody equally.