Thank you for your answer.

IN addition, I'm confused about the radio of IRIS.

The manual says "The 802.15.4 radio includes a DSSS baseband modem proving a 
spreading gain of 9 dB" and "the radio used by the IRIS is an IEEE 802.15.4 
compliant RF transceiver"  .

So, if a iris node occupies the channels 11, does it just occupy one channel? 
or, does it occupy multiple channels because it used DSSS? Can anyone explain 
it to me? Thanks a lot.

Regards,
Haixia
________________________________
From: Hamid Rafiei Karkvandi [[email protected]]
Sent: Thursday, May 17, 2012 10:34 AM
To: Li, Haixia-OSU Stillwater
Cc: [email protected]
Subject: Re: [Tinyos-help] what are the default transmission power of IRIS, 
mica2, and micaz?

You can check the value of default transmission power and even change it 
through the radio chip header files in tos folder, (the value is presented by a 
number between 0 - 15 for IRIS mote for example, and you can find out the 
corresponding dBm value with the use of radio chip datasheet)


Regards,


Hamid Rafiei Karkvandi





On Wed, May 16, 2012 at 4:33 PM, Li, Haixia-OSU Stillwater 
<[email protected]<mailto:[email protected]>> wrote:
Hello all,

Can anyone tell me what the default transmission power of IRIS, mica2, and 
micaz are?

Thanks.
Haixia

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