The ARRL/TAPR DCC (Digital Communication Conference) will be held

in the Portland, OR area on September 24 - 26.

----- Forwarded Message ---- From: Steven Bible [email protected] To: [email protected]; [email protected] Sent: Mon, August 30, 2010 9:06:53 AM Subject: [tapr-announce] DCC Early Registration Deadline September 1st

The September 1st deadline to register for the DCC and get the best room rates is fast approaching.

The DCC activities planning are in the final stages:

- The DCC Proceedings is over 200 pages! See the list of papers below. - The speakers schedule is being planned. - Introductory talks. - Banquet Speaker - The Sunday Seminar on DSP Tools, Techniques, and Tricks presented by Rick Muething, KN6KB (see below for abstract) - Wonderful location at the Heathman Lodge, Vancouver, WA (http://www.heathmanlodge.com)

If you have not attended the DCC, you are missing out on a lot of technical fun. Papers, presentations, demos, meeting like minded people. It is a great event. Ask anyone who has attended one!

To register for the DCC go to http://www.tapr.org/dcc. Hotel registration information is also located there. Be sure to mention the DCC for the discounted rate.

See you at the 2010 DCC!

73, DCC Planning Committee.

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Sunday Seminar

DSP Tools, Techniques, and Tricks

Rick Muething, KN6KB

Time: Sunday Sept 26, 8 AM ­ 12 Noon

Prerequisites: An interest in Digital Signal Processing. Some experience in programming may be helpful. The only math you¹ll need is addition, subtraction, multiplication and division and some idea of what a sine wave is.

Goals: The goal of the workshop is to encourage those peripherally interested in DSP to take the next step to learn what DSP can do and try some DSP design and coding. Each attendee will get a handout CD which will include all slides with links to useful references. The CD will also include some basic Windows VB.NET examples of operational code along with some useful DSP tools (demo versions).

Sessions: Four sessions 45 min each with 15 minute breaks.

1) DSP Intro and Basics: what we are trying to do with DSP. Why is it better/different than analog. The cornerstone of DSP .the Fourier Transform and the FFT.

2) DSP Tools: What you need to see, interpret and understand signals. Basic waveform processing utilities. How do you setup a sound card to capture and play back audio with examples. How to design basic DSP Filters using common tools.

3) DSP Techniques: How do we use DSP to do those things needed in a radio. Mixing, Filtering, Modulation, Demodulation, FSK, PSK, Tone Detection, AGC etc

4) DSP Tricks: Tricks of the trade to make the impractical possible. Common and useful tricks to make significant reductions in computer demands, Single tone detectors, decimation, windowing, CIC Filters, IQ sampling.

No seminar or workshop can cover this topic completely in a few hours but this workshop should remove some of the mystery of DSP and motivate those to learn what can be done and get more involved.

Bio: Rick is a retired entrepreneur electrical engineer and has been a ham since 1962. After volunteering for the Winlink Development effort in 1998 he focused his efforts on programming and DSP. Rick was responsible for the SCAMP, WINMOR and V4 sound card protocols described in the DCC 2004, 2008 and 2010 proceedings along with several of the software components of the Winlink 2000 system.

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Proceedings of 29th Annual ARRL/TAPR Digital Communications Conference

Mobile Fading; Sachin Dubey and Kanchan Cecil

RF to Video Converter for Timex/Sinclair Computers; John M. Franke, WA4WDL

Robotic Radio and CW Robot, a Building Block for Robotic Radio; Rob Frohne, KL7NA

SDR Cube: A Portable Software Defined Radio Utilizing An Embedded DSP Engine for Quadrature Sampling Transceivers; George L. Heron, N2APB and Juha Niinikoski, OH2NLT

A Simple SDR Receiver; Michael Hightower, KF6SJ

Testing a Digital-ATV Station using DVB-S; Ken Konechy, W6HHC and Robbie Robinson, KB6CJZ

Demand and Transmission of E-mail Reception Report in Digital Modes; Patrick Lindecker, F6CTE

Technical Aspects of RS ID and Call ID and Use; Patrick Lindecker, F6CTE

Simulation & Synthesis of Five Port Router; Swati Malviya and Anurag Jaiswal

Five Port Router for Network on Chip; Swati Malviya and Anurag Jaiswal

V4 and V4Chat: A Protocol and Client Optimized for Keyboard Radio QSOs; Rick Muething, KN6KB, AAA9WK

WINMOR Phase 2: Demonstration to Deployment; Rick Muething, KN6KB/AAA9WK

RMS Express ­ A Multimode Winlink 2000 User Client Program; Victor Poor, W5SMM/AAA9WL

Introducing APRSSpeak: An APRStt implementation; Douglas D. Quagliana, KA2UPW/5

A Comparison of Different TCP/IP and DTN Protocols Over the D-Star Digital Data Mode; John Ronan, EI7IG and Cathal O’Connor

Bidirectional Low Frequency Transverter (Bi-LIF) Computer Interface for Demodulation and Modulation of Radio Signals; Alex Schwarz , VE7DXW

An FPGA-Based Transceiver Module; John B. Stephensen, KD6OZH

Terrestrial Link Budgets for Digital Communications; R. Swenson, KF4DII

The Effects of Authentication on AX.25 Packet Radio Data Transmission Time; Paul D. Wiedemeier, Ph.D., KE5LKY