[Tinyos-help] Outdoor Range with Tmote sky

[Tiago Camilo]

Well,
This in fact is the normal behavior of such radio. But i think that you 
can try to ask directly to the tmote sky producers what were the 
conditions to get up to 125 meters.
In order for you to increase the connectivity range you can try to lift 
a bit both nodes, even only 0.5 meters can increase 50% connectivity. 
Another aspect that can increase connectivity is by connecting an 
antenna to the mote (this mote is prepared to incorporate such add on).
You can check more information regarding such radio behavior in papers 
such as:
Camilo, T., Rodrigues, A. Sá Silva, J., Boavida, F., “Lessons Learned 
from a Real Wireless Sensor Network Deployment”, In Proc. of Performance 
Control in Wireless Sensor Networks, A Workshop at the 2006 IFIP 
Networking Conference, May 2006.
Regards,
Tiago Camilo

Xavier Orduña wrote:
> Hi,
>
> I'm using the tmote sky to deploy a wsn in an outdoor environment. 
> After firsts tests, I discovered that when motes are on the floor 
> (without any tripod or similar) the maximum range (using max tx power) 
> is no higher than 7 or 8 meters. That's very far from the 125 meter 
> range that is described in the tmote datasheet.
>
> Does anyone know what are the conditions in which the maximum range is 
> 125 meter in outdoor? Does anyone know if I'm doing something wrong 
> (I'm using the just unpacked Delta program and a little modification 
> of Delta to get sensor data)?
>
> Thanks a lot
>
> Xavi
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