I am looking for confirmation about my understanding of wireless networks. I have always been told that two devices communicating via wireless with each other is like playing a game of catch. Each device must be capable of throwing the ball all the way to the other device before it will work. Correct?
I am king of questioning how internet hotspots work. I can put up a 100 megawatt antenna capable of sending a signal to the moon but if the dude on the moon is using a notebook computer with a standard PCMCIA NIC it wouldn't even come close to sending back to earth.
To bring it down to earth level San Francisco and Google are teaming up to give the entire city Wi-FI. Same senario. People using weak antennas are only going to be able to throw the ball maybe 100ft. So does google need to put access points 100 feet apart across the entire city? Am I confusing access points and hotspots?
What am I not getting? Thanks!