HamRadioNow: High Speed, Low Power Data on UHF; Dynamic Modulation... from the DCC

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HAMRADIONOW.tv
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Episodes 41 and 42 from the ARRL/TAPR DCC

<small>Episode 41: </small><small><big><big><big><small>Experimenting with High Speed
Wireless Networking in the 420 MHz Band</small></big></big></big>
</small><small>David Bern W2LNX looks into long distance, high-bandwidth digital signals using
low-power, off-the-shelf data radios in the 420 MHz band. He uses digital television to generate
the wideband signals, and a little lift from some Virginia mountains to extend his line-of-sight.
How far do you think these few-hundred milliwatt radios worked to carry several megabits per second?</small><small></small><small>
</small>HamRadioNow

<small> Episode 42: </small><big><big><big><small>On-line Alternation of
Modulation Techniques using a Dynamic Switch</small></big></big></big><small>
</small><small>Shashank Gaur and his masters degree classmates from<small> </small>Ecole Centrale d'Electronique
in Paris are experimenting with ways to dynamically change digital modulation modes to adapt
to changing conditions for maximum throughput, using USRP radios. </small><small>
</small>HamRadioNow

<small>The ARRL/TAPR DCCis an annual, three-day conference featuring presentations on a variety of
technical and operational aspects of Amateur Radio. This year's DCC, held in Atlanta last
September, had 16 of the 45-minute main presentations, the usual Saturday banquet talk,
and a four-hour "deep dive" into GNU radio on Sunday. </small>HamRadioNow <small>videotaped all the talks,
[SIZE=3]and we are now releasi[SIZE=3]ng them on-line. We'll continue with one or tw[SIZE=3]o a week until
[SIZE=3]you have them all[SIZE=3].[/SIZE][/SIZE][/SIZE][/SIZE][/SIZE]</small>

Watch these episodes at our web site, www.HamRadioNow.tv.

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