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In an older house, the wire mesh in walls surrounding the furnace behave like a Faraday cage and block wifi signals. It is also difficult to lay new cable, however there is television cable to multiple locations due to there once having been a roof-installed, television antenna.
It would be relatively trivial to install the wifi router at the center distribution point, then have the antenna broadcasting/receiving the signal plugged in at each of the old television outlets.
I assume that it would not be too difficult to find an adapter for SMA <-> F-type connectors. The cable is actually RG-59 rather than RG-6, but I assume that it still has relatively good RF isolation along its length, which is no more than a couple hundred feet in any direction.
Does anyone know a problem with the idea? Will a router get confused if there is /too little/ interference between the two antenna? Is that length of cable (~100ft) too long for the signal a router broadcasts?
I have seen that it is also possible to use old ~$30/each FiOS cable modems available on eBay to extend a network over television cable. However, that seems like a less elegant solution, and might interfere with upnp and dlna services I'd like to have work on a single network.
Thanks if anyone has answers or suggestions before I try this project!
Why can't you just use the Wireless router as it was intended, like without wires? – Chris S – 2011-01-16T21:55:35.263
@ Chris S, did you read the first paragraph? – Moab – 2011-01-16T22:37:40.257
@Moab, unless your putting the router or computers inside the furnace, a Faraday cage only blocks signals inside the cage, it doesn't suck them out of the house like a vacuum cleaner. – Chris S – 2011-01-16T22:51:14.637
If it is in between the router and the PC by line of sight it can block the signal, signals radiate out from the antenna and do not turn corners. That is by definition what a faraday cage does, routes the signal that hits it to ground, not sucking, but Blocking it from reaching its destination. – Moab – 2011-01-16T23:01:23.340
Ok, we're not perhaps talking about the router being in a Faraday cage, but the wire mesh will certainly attenuate the signals if it's in the direct path between transmitter and receiver. – Linker3000 – 2011-01-17T13:34:40.843