[amsat-bb] Ya'll come on down now ya hear (TAPR DCC)

Robert McGwier rwmcgwier at gmail.com
Tue Aug 21 21:12:46 PDT 2007

26th Annual ARRL/TAPR Digital Communications Conference
September 28-30, 2007
Hartford, CT

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A total of 18 papers have been submitted for a total of 158 pages. 
Titles and authors are listed below.  Thank you to all the authors! 
Technical experimentation is alive and well.

A preliminary speakers schedule is being drafted at this time and will 
be posted this weekend.

Remember to register for the conference.  Online registration is at

Remember to book your room!  The DCC room rates are only good until 
August 31st.  Call the hotel directly and ask for the DCC rates.  Hotel 
information is available on the DCC web side http://www.tapr.org/dcc.

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Sunday Seminar:

A Stroll Through Software Radio, Information Theory, and Some Applications
by Bob McGwier, N4HY

The Sunday seminar this year will cover several technical topics. 
Software Radio will be the main theme and a package of tutorials and 
give away software will be a part of the seminar.  The attendee will be 
exposed to the basic concepts of and building blocks of a simple 
software radio system and some information theory exposure will be 
given.  The quadrature sampling detector will be analyzed and why it is 
such a wonder will be discussed. Its wonderful properties make it an 
excellent choice for a linear transponder system so its use in the AMSAT 
software defined transponder will be discussed.  Some necessary 
information theory will be discussed with examples with the goal of 
leaving the attendee with a working knowledge of the practical use of 
this theory in thinking about communication systems. Finally, as time 
permits, we will show some software radio systems from the $30 
softrock40 to GnuRadio/USRP doing multi megabit per second OFDM on the
air and then a technical description of the Flex5000 and DttSP will be

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Proceedings Submitted Papers:

The FSM Virtual Radio Kernel: Why, What, & How (In That Order);
Frank Brickle, PhD, AB2KT

The APRS Local Voice Repeater Initiative;
Bob Bruninga, WB4APR

NUE-PSK31: A digital modem for PSK31 field operationŠ without using a PC!;
Milton Cram, W8NUE, and George L. Heron, N2APB

SourceForge, Hamlib, and Rigserve: Free Beer, Free Speech, and Rig Control;
Martin Ewing, AA6E

The Nordic nRF2401 Single Chip Data Transceiver: High Speed, Short Range
Data Communication At An Extremely Low Cost;
John A. Hansen, W2FS

Transmission Lines, Parameters, and Application in Communications Systems;
Hank Javan and Jerry Newman

Direct Conversion Receiver With Computerized SSB Demodulation;
Patrick Lindecker, F6CTE

APRS® and D-STAR® = D-PRS;
Peter Loveall AE5PL

AMSAT¹s Phase IV (lite)?;
Bob McGwier

On A Method for Automatic Image Balancing in IQ Mixer Based Software 
Defined Receivers; Bob McGwier, N4HY

TPSK31: Getting the Trellis Coded Modulation Advantage;
Bob McGwier, N4HY

The Integration of Amateur Radio and 802.11;
Roderick D. Mitchell, KL1Y

Results of HF Digital Protocol Survey;
Paul L Rinaldo, W4RI

Ranking Digital Modes for a "Stealth" QTH;
Ed Sack, W3NRG

Bringing New Life in Old Computers;
Miroslav "Misko" Skoric, YT7MPB

Alternate Uses for the APRS Data Stream Using APRS Mobile Trackers for
Distributed Site Surveys;
Darryl Smith, VK2TDS

Growing APRS' Value within the Emergency First Responder Community;
Ev Tupis, W2EV1

Performance Modeling of TCP and UDP over Packet Radio Networks using the
Network Simulator; Paul D. Wiedemeier, Ph.D., KE5LKY

The Flex 5000 Software Defined Transceiver;
Gerald Youngblood, K5SDR

AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL,
"If you're going to be crazy, you have to get paid for it or
else you're going to be locked up." Hunter S. Thompson

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