<dd><ahref="http://www.ettus.com/downloads/usrp_v4.pdf">USRP</a> devices from the <ahref="http://www.gnu.org/software/gnuradio/index.html">GNU Radio</a> project give you <em>control over Layer 1 of a
wireless network</em> - everything from signal processing up is done in
software.</dd>
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@@ -59,7 +59,7 @@
single-board computers and Mica2 motes. These robots have
<em>full mobility</em> within our sensor network testbed.</dd>