Bristol Digest, Vol 527, Issue 1

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Today's Topics:

1. Devolo Powerline Adapter - Noisy ? (Andrew McLean)
2. Re: Devolo Powerline Adapter - Noisy ? (Jamie Harris)
3. Re: Devolo Powerline Adapter - Noisy ? (d.hockinbt)
4. Re: Devolo Powerline Adapter - Noisy ? (James Womack)


----------------------------------------------------------------------

Message: 1
Date: Wed, 27 Nov 2013 09:54:29 +0000
From: Andrew McLean <am57762@gmail.com>
To: LUG <bristol@mailman.lug.org.uk>
Subject: [bristol] Devolo Powerline Adapter - Noisy ?
Message-ID: <5295C155.8080208@gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Recently started using a Devolo 500Duo+ PLA in the Living Room, with
another
next to the router upstairs.
They work OK, but certain members of the family are complaining about
a high-piched noise coming from it (no, we don't have a dog...!).

Has anyone here experience this ? Do they normally make a noise, or is this
unit faulty ? I myself can hear a very high-piched noise which comes
and goes
with the traffic (indicated by the green LED), which is presumably a
magnetostrictive effect, but I realise such noises can be hard to deal
with.
I realise that in an office environment there's too much noise from
everything
else for this to be noticeable, but it's different at home (we hope).

They're the first PLAs I've tried, so I've nothing to compare them with.

Andrew



------------------------------

Message: 2
Date: Wed, 27 Nov 2013 10:12:43 +0000
From: Jamie Harris <j@mie.uk.net>
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: Re: [bristol] Devolo Powerline Adapter - Noisy ?
Message-ID:
<CACdvUjhMhbRsPx6YQMhVx6dnN+8B1OKCTOm4GEUs+UUPiPKsrg@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

I've got a few of the 200Mb Develo PLAs at home and haven't noticed any
noise, friends and family also have various models of Devolo PLAs and I've
not heard them complain.

cheers

Jamie


On 27 November 2013 09:54, Andrew McLean <am57762@gmail.com> wrote:

> Recently started using a Devolo 500Duo+ PLA in the Living Room, with
> another
> next to the router upstairs.
> They work OK, but certain members of the family are complaining about
> a high-piched noise coming from it (no, we don't have a dog...!).
>
> Has anyone here experience this ? Do they normally make a noise, or is this
> unit faulty ? I myself can hear a very high-piched noise which comes and
> goes
> with the traffic (indicated by the green LED), which is presumably a
> magnetostrictive effect, but I realise such noises can be hard to deal
> with.
> I realise that in an office environment there's too much noise from
> everything
> else for this to be noticeable, but it's different at home (we hope).
>
> They're the first PLAs I've tried, so I've nothing to compare them with.
>
> Andrew
>
> _______________________________________________
> Bristol mailing list
> Bristol@mailman.lug.org.uk
> https://mailman.lug.org.uk/mailman/listinfo/bristol
>



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Message: 3
Date: Wed, 27 Nov 2013 10:30:40 -0000
From: "d.hockinbt" <d.hockin@btinternet.com>
To: "Bristol and Bath Linux User Group" <bristol@mailman.lug.org.uk>
Subject: Re: [bristol] Devolo Powerline Adapter - Noisy ?
Message-ID: <AEA8DB36E91A4B8B8EDE1D09A48C6ACF@Dave3>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original

Some makes of PLAs make a lot of RF interference, even though they are
"supposed" to notch out the ham bands....some do, but not well. It could be
physical instabilty from badly mounted components suffering from magnetic
resonances.

Dave (Posset) G4UGT

----- Original Message -----
From: Jamie Harris
To: Bristol and Bath Linux User Group
Sent: Wednesday, November 27, 2013 10:12 AM
Subject: Re: [bristol] Devolo Powerline Adapter - Noisy ?


I've got a few of the 200Mb Develo PLAs at home and haven't noticed any
noise, friends and family also have various models of Devolo PLAs and I've
not heard them complain.


cheers


Jamie



On 27 November 2013 09:54, Andrew McLean <am57762@gmail.com> wrote:

Recently started using a Devolo 500Duo+ PLA in the Living Room, with another
next to the router upstairs.
They work OK, but certain members of the family are complaining about
a high-piched noise coming from it (no, we don't have a dog...!).

Has anyone here experience this ? Do they normally make a noise, or is this
unit faulty ? I myself can hear a very high-piched noise which comes and
goes
with the traffic (indicated by the green LED), which is presumably a
magnetostrictive effect, but I realise such noises can be hard to deal with.
I realise that in an office environment there's too much noise from
everything
else for this to be noticeable, but it's different at home (we hope).

They're the first PLAs I've tried, so I've nothing to compare them with.

Andrew

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Bristol@mailman.lug.org.uk
https://mailman.lug.org.uk/mailman/listinfo/bristol






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------------------------------

Message: 4
Date: Wed, 27 Nov 2013 10:54:50 +0000
From: James Womack <5inowsy1maiq@gmail.com>
To: Bristol and Bath Linux User Group <bristol@mailman.lug.org.uk>
Subject: Re: [bristol] Devolo Powerline Adapter - Noisy ?
Message-ID: <5295CF7A.2060509@gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

On 27/11/13 09:54, Andrew McLean wrote:
> Recently started using a Devolo 500Duo+ PLA in the Living Room, with
> another
> next to the router upstairs.
> They work OK, but certain members of the family are complaining about
> a high-piched noise coming from it (no, we don't have a dog...!).
>
> Has anyone here experience this ? Do they normally make a noise, or is
> this
> unit faulty ? I myself can hear a very high-piched noise which comes
> and goes
> with the traffic (indicated by the green LED), which is presumably a
> magnetostrictive effect, but I realise such noises can be hard to deal
> with.
> I realise that in an office environment there's too much noise from
> everything
> else for this to be noticeable, but it's different at home (we hope).
>
> They're the first PLAs I've tried, so I've nothing to compare them with.
>
> Andrew
>
> _______________________________________________
> Bristol mailing list
> Bristol@mailman.lug.org.uk
> https://mailman.lug.org.uk/mailman/listinfo/bristol
I don't use PLAs, but I am someone who can hear quite high pitched
noises and can attest to how annoying they can be. Consistent high
pitched noises from electronics (such as those emitted by CRTs) are not
so problematic for me, but irregular noises can be very annoying indeed.
I used to have an Asus EeePC 701 which emitted high pitched squeals
under load. My wife could not hear it, so was puzzled by my annoyance!

My suspicion would be that the noise is not something common to all
PLAs, and possibly not even to all PLAs of the model you describe. In my
experience, the amount of noise emitted from devices varies from unit to
unit. One unit may emit very quietly, while another identical unit can
be annoyingly loud.

Regards,
James





------------------------------

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End of Bristol Digest, Vol 527, Issue 1
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