5w WIFI
@207.246.x.x | reply to PhoenixDown
Re: I wonder if I could do this in nyc
nope... to many buildings sturctures in the way... you will be lucky to get 1000ft |
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NAK
Boot Failure
Premium
join:2000-12-27
Fort Worth, TX
 ·AT&T Southwest
 ·AT&T U-Verse
| I think it's great, but did they do it legally? I seem to remember there is a radiated power limit...meaning that there is a limit to not only the xmitter power but also the transmit antenna gain. You can get enough gain in a dish or a phased Yagi array that you are required to reduce xmt power to stay legal.
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Ronnie123
Premium
join:2003-03-11
Springtown, TX
| The limit for unlicensed 2.4 is 36dbm out the antenna for point to multi-point links.
For point to point links, you can make that quite a bit higher. You start with 30 dbm at the radio and a 6 dbi antenna to get the 36dbm being transmitted. However, in point to point, you can add 3 dbi of gain to the antenna for each one dbm you take off the radio. so if you set the radio to transmit at 24dbm you can add 18 db to the antenna and use a 24 dbi grid, giving you an eirp of 48 dbm.(i am assuming no cable or connector loss between the radio and antenna for simplicity). |
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