[MLB-WIRELESS] New world record for wifi link (125 Miles).
dwsmith at bigpond.net.au
Wed Aug 3 00:13:53 EST 2005
Mt Buffalo to Camels Hump is 202 km LOS.
And the current Aus amateur record for 2403 MHz is 1885 km ... :(
If you are going to try for a record of sorts, then it'll need to be at
legal levels to be recognised (which I don't think the US guys were).
Maybe that's achievable by running a BIG dish (4m) for good Rx levels
and winding back Tx power to get legal EIRP.
Tony Langdon, VK3JED wrote:
> At 11:34 PM 8/2/2005, Josh Clarke wrote:
>> Don't know if this helps, but the Telstra CDMA guys bounced their
>> signals off earths stratosphere? as they were having the same troubles
>> with curvature...
> Usually takes a bit of power to do. Something WiFi doesn't have...
> We may have to resort to meteorology and tropospheric analysis to crack
> this nut.... Hope we get a duct at the right height on a warm summers
> evening. :)
> Also, as an aside, we might want to look at having two or more DX
> records - amateur (i.e. use the amateur service rules, so any antenna
> goes, maybe any power?) amateur barefoot (any antenna, no external
> amplifier) and unlicenced (staying within the 4W EIRP power limit).
> Obviously, for the amateur categories, the nodes have to carry the
> callsign of the amateur who's supervising the link at each end, and they
> also have to use a channel that is completely within the band 2400 -
> 2450 MHz. For unlicenced, no ID needed and any convenient channel can
> be used (I'd probably choose something near the middle of the band, say
> channel 7 for unlicenced - might get that extra wee bit of performance).
> Finally, a word on sites. Mt Macedon has one big potential problem - a
> high noise floor. It might be worth looking further out of town foi
> suitable sites. The northern side of Mt Macedon (from Camels Hump) is
> likely to be quieter, and then we need a decent mountain further north...
> 73 de VK3JED
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