Re: shielding Notebook

Posted by bbin37 on
URL: https://www.es-forum.com/shielding-Notebook-tp1536902p1536923.html

> ...................................................... I think the
> same issue would hold for a cable modem.

In the sense that all the connected cable (not the phone lines) in
your home would carry the broadband network signals if you use a cable
modem. ;)

Beau

--- In [hidden email], "Beau" <netfarer2@y...> wrote:

> Hey David,
>
> What type of broadband technology are you using to connect to the
> Internet, DSL or a cable modem? If you're using a phone-line based
> technology like DSL, all the phone lines associated with a particular
> phone number in your house are probably getting signals continuously
> from the broadband network since it is always active. I think the
> same issue would hold for a cable modem.
>
> When the modem is off and you still sense the difference is the
> computer also off? If the computer is on, did you have to install a
> new network interface card (NIC) in your computer before you began
> using the modem, or did you have to enable your motherboard's
> built-in ethernet interface? If so, the NIC or onboard ethernet may
> be the issue. If the computer is also off, my first guess would be
> the consistent broadband signaling on your home phone lines or cable.
> I'd try disconnecting the phone/cable company's feed into your home
> and see if the situation clears up for you.
>
> This reminds me -- keep your eyes peeled for BPL (Broadband over Power
> Lines). I've heard from Roy Beavers that the power companies already
> send signals over the grid for monitoring and maintenance. Now they
> want in on the Internet money stream and are trying to use the grid
> for broadband Internet connectivity. The remaining obstacle to
> mainstream implementation that I know of is the short-wave radio
> interference BPL transmissions have been shown to cause in some areas.
> Imagine our situation if this signaling is added to the
> environmental mix directly through our home wiring.
>
> All the best,
> Beau
>
> --- In [hidden email], "David Fancy" <davidfancy@h...> wrote:
>
> > I;ve been using what I think is aluminum window screen warpped in
> > various folds around a throublesome modem. This has cut down the RF
> > emissions significantly, according to the Field Strength Meter. I've
> > also sent it packing to the other end of my house with a 50'
> > ethernet cable. I can still notice a difference when its actually
> > turned off. Is there some way that the 50 cable is in some fashion
> > acting as an antenea for the modem's unblocked RF output?