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Many proposed new questions, mostly without answers. New formatting based on 

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<h2>Frequently Asked Questions</h2>
</center>
<h2>Contents</h2>
<h3>General</h3>
<ul>
<li> <a href="#WhatIsSDR">What is software defined radio (SDR)?</a>
<li> <a href="#WhatIsGNURadio">What is GNU Radio?</a>
<li> <a href="#WhatIsUSRP">What is the Universal Software Radio Peripheral (USRP)?</a>
<li><a href="#WhatIsSDR">What is software-defined radio (SDR)?</a></li>
<li><a href="#WhatIsGNURadio">What is GNU Radio?</a></li>
<li><a href="#WhatIsUSRP">What is the Universal Software Radio Peripheral
(USRP)?</a></li>
<li><a href="#WhereToBuyUSRP">Where can I buy USRPs?</a></li>
<li><a href="#WhereToTestUSRP">If I can't afford to buy a bunch of USRPs, can
I "borrow" some for my research and/or my class?</a></li>
</ul>
<hr>
<h3>Using USRPs in Netbed</h3>
<ul>
<li><a NAME="WhatIsSDR"></a>
<font size='+1'><b>What is software defined radio (SDR)?</b></font>
<p>Software defined radio (SDR) is a system where changeable
software is used to process digital signals sent and/or
received by accompanying radio frequency hardware. This is in
contrast to traditional radios, where the signal processing
logic is mainly hardcoded into custom hardware with only
limited control over how the signal is handled.
</p>
<li><a NAME="WhatIsGNURadio"></a>
<font size='+1'><b>What is GNU Radio?</b></font>
<p>Gnu Radio is a free extensible software kit for experimenting
with software defined radio (SDR) that runs on a general
purpose computer, such as a PC or a Mac. This software suite
is normally coupled with hardware (such as the USRP) that
captures radio frequency (RF) signals and converts them from
analog to digital. The GNU Radio software operates on this
digital representation of the radio signal.
</p>
<li><a NAME="WhatIsUSRP"></a>
<font size='+1'><b>What is the Universal Software Radio Peripheral (USRP)?</b></font>
<p>The Universal Software Radio Peripheral, or USRP for short, is
a hardware platform designed to work with the GNU Radio
software kit. It is comprised of an extensible motherboard
that can accomodate up to four peripheral daughtercards.
Digital to Analog (D/A) and analog to digital (A/D) converters
on the motherboard change the signal to and from digital as it
passes between the the motherboard and daughtercards. A
programmable FPGA on the motherboard can perform mathematical
transforms on the digital signals quickly. Data is shuttled to
and from the motherboard and general purpose computer through a
USB 2.0 connection.
</p>
<p>Several USRP daughtercards are already available, with many more
planned. These include a UHF receiver (50MHz - 800MHz), basic
transmit and receive boards for use with external equipment, and
ISM band transmiters and receivers (e.g. 2.4GHz band).
</p>
<p>Sales and other technical information can be found on the Ettus
Research webpage: <a href="http://www.ettus.com">
http://www.ettus.com</a>
<li><a name="#NetbedUSRPs">How many USRPs are in Netbed? Where are they
located? What are their characteristics?</a></li>
<li><a name="#NetbedAccess">How do I get access to the USRPs in
Netbed?</a></li>
<li><a name="#NetbedGNuRadio">Is the GNU Radio software already installed on
Netbed?</a></li>
<li><a name="#NetbedExperiment">How do I create an experiment that uses
Netbed's USRPs?</a></li>
<li><a name="#NetbedUSRPConfigure">How that I've created an experiment, how
should I configure and use the USRPs?</a></li>
<li><a name="#NetbedChoosingNodes">Can I choose USRP-enabled nodes based on
their observed wireless properties with respect to each other, e.g., signal
strength?</a></li>
<li><a name="#NetbedPhysical">How do I make sure that I get the same physical
USRP nodes every time I run my experiment?</a></li>
<li><a name="#NetbedSamples">Are there any sample experiments that I can play
with?</a></li>
</ul>
<hr/><!--===================================================================-->
<h3>General</h3>
<div class="question">
<p>
<a name="WhatIsGNURadio"><b>What is software-defined radio (SDR)?</b></a>
</p>
</div>
<div class="answer">
<p>
Software-defined radio (SDR) is a system in which changeable
software is used to process digital signals sent and/or
received by accompanying radio frequency hardware. This is in
contrast to traditional radios, in which the signal processing
logic is mainly hard-coded into custom hardware with only
limited control over how the signal is handled.
</p>
</div>
<div class="question">
<p>
<a name="WhatIsGNURadio"><b>What is GNU Radio?</b></a>
</p>
</div>
<div class="answer">
<p>
GNU Radio is a free, extensible software kit for experimenting
with software defined radio (SDR) that runs on a general-purpose
computer, such as a PC or a Mac. This software suite
is normally coupled with hardware (such as the USRP) that
captures radio frequency (RF) signals and converts them from
analog to digital. The GNU Radio software operates on this
digital representation of the radio signal.
</p>
</div>
<div class="question">
<p>
<a name="WhatIsUSRP"><b>What is the Universal Software Radio Peripheral
(USRP)?</b></a>
</p>
<div class="answer">
<p>
The Universal Software Radio Peripheral, or USRP for short, is
a hardware platform designed to work with the GNU Radio
software kit. It is comprised of an extensible motherboard
that can accommodate up to four peripheral daughtercards.
digital to analog (D/A) and analog to digital (A/D) converters
on the motherboard change the signal to and from digital as it
passes between the the motherboard and daughtercards. A
programmable FPGA on the motherboard can perform mathematical
transforms on the digital signals quickly. Data is shuttled to
and from the motherboard and general purpose computer through a
USB&nbsp;2.0 connection.
</p>
<p>
Several USRP daughtercards are already available, with many more
planned. These include a UHF receiver (50MHz&ndash;800MHz), basic
transmit and receive boards for use with external equipment, and
ISM band transmitters and receivers (e.g. 2.4GHz band).
</p>
<p>
Other technical information can be found on the Ettus Research Web page at <a
href="http://www.ettus.com/">http://www.ettus.com/</a>.
</p>
</div>
<div class="question">
<p>
<a name="WhereToBuyUSRP"><b>Where can I buy USRPs?</b></a>
</p>
</div>
<div class="answer">
<p>
The USRP is now available for purchase from <a
href="http://www.ettus.com/">Ettus Research</a>.
</p>
</div>
<div class="question">
<p>
<a name="WhereToTestUSRP"><b>If I can't afford to buy a bunch of USRPs, can
I "borrow" some for my research and/or my class?</b></a>
</p>
</div>
<div class="answer">
<p>
<em>To be written.</em>
</p>
</div>
<hr/><!--===================================================================-->
<h3>Using USRPs in Netbed</h3>
<div class="question">
<p>
<a name="NetbedUSRPs"><b>How many USRPs are in Netbed? Where are they
located? What are their characteristics?</b></a>
</p>
</div>
<div class="answer">
<p>
<em>To be written.</em>
</p>
</div>
<div class="question">
<p>
<a name="NetbedAccess"><b>How do I get access to the USRPs in Netbed?</b></a>
</p>
</div>
<div class="answer">
<p>
<em>To be written.</em>
</p>
</div>
<div class="question">
<p>
<a name="NetbedGnuRadio"><b>Is the GNU Radio software already installed on
Netbed?</b></a>
</p>
</div>
<div class="answer">
<p>
</p>
</div>
<div class="question">
<p>
<a name="NetbedExperiment"><b>How do I create an experiment that uses
Netbed's USRPs?</b></a>
</p>
</div>
<div class="answer">
<p>
<em>To be written.</em>
</p>
</div>
<div class="question">
<p>
<a name="NetbedUSRPConfigure"><b>How that I've created an experiment, how
should I configure and use the USRPs?</b></a>
</p>
</div>
<div class="answer">
<p>
<em>To be written.</em>
</p>
</div>
<div class="question">
<p>
<a name="NetbedChoosingNodes"><b>Can I choose USRP-enabled nodes based on
their observed wireless properties with respect to each other, e.g., signal
strength?</b></a>
</p>
</div>
<div class="answer">
<p>
<em>To be written.</em>
</p>
</div>
<div class="question">
<p>
<a name="NetbedPhysical"><b>How do I make sure that I get the same physical
USRP nodes every time I run my experiment?</b></a>
</p>
</div>
<div class="answer">
<p>
<em>To be written.</em>
</p>
</div>
<div class="question">
<p>
<a name="NetbedSamples"><b>Are there any sample experiments that I can play
with?</b></a>
</p>
</div>
<div class="answer">
<p>
<em>To be written.</em>
</p>
</div>
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