View Single Post
  #4   Report Post  
Posted to sci.electronics.repair
Jeff Liebermann Jeff Liebermann is offline
external usenet poster
 
Posts: 4,045
Default Electric meter conversion to wireless, I doubt this could be safe

On Wed, 08 Jul 2015 10:56:58 +1000, Chris Jones
wrote:

You could get a roll of aluminium foil and wallpaper the wall between
the meters and the bedroom.


There's a good chance that you may already have the foil in place.
Some construction uses foil backed fiberglass insulation. In the
roof, there's foil backed foam board and glass wool.

https://www.youtube.com/watch?v=urglg3WimHA

Depending on how careful you are with the joins you could achieve a very
low field strength. This is probably counterproductive as it may
attenuate cellphone signals and thereby cause the cellphones that the
children are using to ramp up the transmitters to maximum power right on
their heads.


Nope, that doesn't work. Aluminum foil reflects RF and sends it in
some other direction. Put foil in the walls and you could just as
easily increase the RF field strength as decrease it. For example,
the corners of a room make a nice 90 degree corner reflector antenna.

Instead what you need is an RF absorber, not a reflector. Carbon foam
is good. A wet towel will also work. Anything that absorbs RF.

--
Jeff Liebermann
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558