Mick's IT Blogs

My blog is here to help solve issues I have encountered and solved, publish scripts I have written, and educate others in understanding areas that are not well covered.

Mick's IT Blogs

Information Technology Zone

23 June 2012

4G Signal Dies in Walmart Stores

You walk into the Walmart store and your wireless 4G device comes to almost a screeching halt. This is not uncommon inside the newer Walmart buildings. It is caused by the corrugated metal roofs they use. If you stand back in a corner and look up inside the store, it is nothing more than a warehouse that fills the visual field of the human eye with decorations to give the illusion of a real department store, when in essence, it is nothing more than a warehouse building. The metal roof acts the same as a faraday cage, which the shorter the wavelength, the more shielded the signal is.

Labels: , , , , , , , , , , ,


Post a Comment

Subscribe to Post Comments [Atom]

<< Home