August 2011 - AMSAT-BB - mailman.amsat.org

AMSAT at Chaos Communication Camp 2011
by Trevor . 22 Aug '11

22 Aug '11

Today Mario Lorenz DL5MLO from AMSAT-DL gave a presentation on Amateur Radio Space Communications as part of the Hacker Space Program track at the Chaos Communication Camp 2011. Mario's talk titled 'From OSCAR 1 to Mars and beyond - Amateur Space Exploration – The last 50 years, now, and the future' was given to hackers at the Chaos Communication Camp which ran from August 10-14 at Finowfurt near Berlin, Germany. He described how Radio Amateurs have been building and operating satellites for almost fifty years now, and we are aiming for more. Building satellites has always been challenging and involves using technology in creative ways. He explained what AMSAT is, what has been achieved in the last fifty years, and what is being worked on now such as the Amateur Radio Mars orbiter P5A. Hacker Space Program track http://events.ccc.de/camp/2011/Fahrplan/track/Hacker%20Space%20Program/inde… Chaos Communication Camp 2011 http://events.ccc.de/camp/2011/ --- 73 Trevor M5AKA

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satellite tracking problem (stb)
by wstw＠juno.com 22 Aug '11

22 Aug '11

using the uni_trac 2003 control my icom 910h xcvr switches between vfo a and vfo b (via the split function in the radio when) I try to track the iss. Is there a known fix for this satellite and any other amateur radio satellites. I am having a problem with nova allowing the 2003 to tune the 910h radio as well as control the az el function of my g5500 rotors. I have talked with Mr. John Bealand just this week about these problems and his suggestion was to post them on the amsat-bb. help on how to overcome these problems is greatly appreciated, Al T. ____________________________________________________________ Penny Stock Jumping 3000% Sign up to the #1 voted penny stock newsletter for free today! http://thirdpartyoffers.juno.com/TGL3141/4e5062613ba837a71c5st03vuc

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TAPR/ARR DCC (Digital Communications Conference), Baltimore, MD, 9/16-18
by Mark Thompson 22 Aug '11

22 Aug '11

The 30th Annual ARRL and TAPR Digital Communications Conference September 16-18, 2011 - Baltimore, MD http://www.tapr.org/dcc - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Final preparations are being made for the 30th Annual ARRL and TAPR Digital Communications Conference. Are you ready? Here's a check list to help you out: Check List: - Have you booked your travel? - Have you booked your hotel room? (see below for special rates and deadline) - Have you registered for the DCC? Go to http://www.tapr.org/dcc to sign up. Below is the list of submitted papers. The speakers schedule is being assembled. We have a an exciting list of paper talks, guest speakers, and Introductory Seminars. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Hotel: Four Points by Sheraton BWI Airport, Baltimore, MD. A block of rooms at the special DCC room rate of $90.00 single/double. This special rate is good until August 25, 2011 after that you will pay the regular room rate. To book your room, use the reservation link below or call the hotel directly (phone numbers below) and mention the group code DCC (Digital Communications Conference) when making reservations. Be sure to book your rooms early! Four Points by Sheraton BWI Airport 7032 Elm Road Baltimore, Maryland 21240 Reservations: 1-800-368-7764 Phone: 410-859-3300 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Submitted Papers: DATV-express: A Lower Cost Approach to DATV Charles Brain, G4GUO and Ken Konechy, W6HHC A Shadow Ad-Hoc TEMPn-N Network Bob Bruninga, WB4APR CW Mode for the NUE-PSK Digital Modem Dave Collins, AD7JT and George Heron, N2APB APRS and the Android Smartphone Sagar Gupta, KC2VSG Practical Implementations of Bluetooth in Microcontroller Circuits John A. Hansen, Ph.D. W2FS Public Service Event APRS Web Mapping for Wireless Devices Ted Jacobson, W8KVK and Rob Jacobson, KB9AFT WRC-12 Agenda Item 1.19: Regulatory Considerations for Software Defined and Cognitive Radio Systems Brennan Price, N4QX More experiments with Delay and Disruption Tolerant Networking over AX.25 Networks John Ronan, EI7IG, Darren Long, GØHHW and Kristian Walsh A Further Comparison of Different TCP/IP and DTN Protocols over the D-STAR Digital Data Mode John Ronan, EI7IG and Cathal O’Connor Codec 2 – Open Source Speech Coding at 2400 bit/s and Below David Rowe, VK5DGR PhoneSat: Balloon Testing Results Mike Safyan Modulation – Demodulation Software Radio (MDSR) Software for the BiLiF computer interface Alex Schwarz, VE7DXW - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Introductory Talks (Saturday): Introduction to Digital Voice Introduction to Digital Modes Introduction to D-STAR Digital Voice & Data - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Demo Room: Be sure to bring your projects to show in the demo room. Even if you are not speaking. Each year at the DCC a separate (and lockable) room is provided for people to bring and show off their latest projects. Tables and power will be provided. Bring your equipment and display for all to see, learn, and ask questions about. Be sure to bring a small sign and/or flyer naming and describing your project. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Saturday Night Banquet Speaker: The Village TELCO David Rowe, VK5DGR There are now billions of mobile phones all over the world. However in many developing countries, mobile phones are simply too expensive to use. For example, in a country where people earn $1.50/day, a phone call can cost 21 cents/minute. This is a huge tax on communications. David Rowe, VK5DGR, will describe how a community of people from around the world set out to fix this problem, using a mix of Wi-Fi and open source software. The result is the Village Telco - a DIY telephone company that anyone can set up. A Village Telco is constructed from a network of "Mesh Potatoes" - small Wi-Fi boxes that are mounted on homes in a village. They form a mesh network, relaying telephone calls for each other. Each Mesh Potato connects to a regular telephone inside village homes. Phone calls on the network are free. A local person in the Village can be trained in a few hours to set up and maintain the network. To build the Village Telco we borrowed many ideas from Ham Radio, such as sharing hardware designs and community networks. The talk will include real world stories of how Village Telcos are helping people in several developing countries, and explain why a simple phone call that we take for granted can be so important. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Sunday Seminar: Stay tuned. We are assembling an exciting seminar. Details will be released this week. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Schedule: Friday 8:15 AM Conference Registration and Demonstration Room Open 9:00 AM Welcome and Introductions 9:30 AM Technical Presentations Noon Lunch 1:00 PM Technical Presentations 6:00 PM Break 7:00 PM Social 11:00 PM Demonstration Room Closed Saturday 7:15 AM Conference Registration and Demonstration Room Open 8:00 AM Welcome 8:15 AM Technical Presentations Noon Lunch 1:00 PM Technical Presentations 3:15 PM TAPR Membership Meeting 6:00 PM Break 7:00 PM Dinner Banquet 11:00 PM Demonstration Room Closed Sunday 8:00 AM to Noon Sunday Seminar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - We hope to see you there! 73, Steve N7HPR President TAPR

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Yes, more ARISSat-1 telemetry
by Greg D. 22 Aug '11

22 Aug '11

Hi folks, More from a couple of passes over CM98 01:05z pass start, 8/22/11 66 degree pass Apparently in high power mode. MET ?? >QSB> probably 45min IHU Temp = +31c Control Panel temp = +38c Battery = 36.06v Current = -8ma MET 47 min IHU Temp = +32c Control Panel temp = +39c Battery = 35.94v Current = - ?? <QSB> MET 49 min IHU temp = +32c Control Panel temp = +40c Battery = 35.94v Current = -8ma After the kids' chanting, the satellite turned off for 2 min. SSTV, greetings, etc... MET 54 min IHU Temp = +34c Control Panel temp = +24c (did I hear that right? Was +40 a few minutes earlier! Need parity bits on the eardrums Battery = <QSB> Current = -20ma After more greetings and a live SSTV picture the satellite turned off again through LOS --------------------------- Next pass: 17 degrees 02:38z start, 8/22/11 MET 47 IHU Temp +32c Control Panel temp = +44c Battery = 35.93v Current = -20ma MET 49 IHU Temp = +33c Control panel temp = 45c Battery = 35.90v Current = -16ma Greg KO6TH

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Re: Seriously Get Over It!
by Mike Schaffer 22 Aug '11

22 Aug '11

Enough with the friggin ARISSAT-1 reports, gee I heard it too. Post your reports here http://oscar.dcarr.org/ I mean really . Kevin KF7MYK ------------- I believe somebody needs a refresher on the Radio Amateur's Code under considerate and friendly operation. Mike Schaffer KA3JAW Tampa, Florida EL87

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ARISSAT-1 Pass over VK 3:15 UTC - Alive and well
by Andy Kellner 21 Aug '11

21 Aug '11

Satellite is high power mode. Strong Signal on VHF downlink. MET: 1 minute (must just come out of reset ?) Battery Voltage: 35.7 V Current: - 4 mA Temp: 26.5 Deg. Heard several greeting messages, voice telemetry and 2 very nice sstv pictures. Attached one, but not sure if that goes thru to the mailing list. Andreas - VK4FHAW

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ARISSat-1 heard over Gainsville, FL
by Mike Schaffer 21 Aug '11

21 Aug '11

ARISSat-1 heard at 2200 UTC on 145.950 FM in SSTV. Signal was weak with only one quarter demodulated screen showing one of the fixed images. Satellite was in low power mode north of Gainsville, FL with AZ: 349, EL: +56 from Tampa, Florida. 73's Mike Schaffer KA3JAW Tampa, Florida EL87

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SATPC32 - Keps Path
by Carl Rimmer W8KRF 21 Aug '11

21 Aug '11

Is there a way I can change the default PATH for my Keps files in SatPC? I like to keep one Kep file on one computer and load them over my LAN to the other computers/programs. I want to start using SatPC again after not being very successful using HRD Sat Tracker on ARISSat-1. It seems that the program of choice here on this bulletin board is SatPC. It has been ages since I have used it so I am trying to get it up-to-date and configured for ARISSat-1. I have spent hours searching the archives and I think I have all the SQF files setup. It is controlling the radio (TS-2000) and rotor. Thanks, -- *Carl W8KRF *

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ArissatTlm for the Mac
by Gilbert Mackall 21 Aug '11

21 Aug '11

All, I would like to find one or two testers for a new version of ArissatTlm for the Mac. This version should resolve the hangup that happens on some systems, while playing back WAV files.

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ARISSatTLM Soundcard Re-Start
by Larry Phelps 21 Aug '11

21 Aug '11

I have noticed that if the soundcard is stopped and then re-started within ARISSatTLM, that there is no further decode of telemetry. Upon soundcard re-start the audio level resumes activity and proper level, the CW search marker (blue) hops around as usual and locks onto the CW beacon, but the data search marker (red) freezes in a random position and there is no decode from this point on. Only by re-starting the whole ARISSatTLM program can decode be re-established. The program decodes nicely with ARISSat-1 at two degrees or less above my horizon (with C.P. Yagi at 6 feet), so absolutely no issues there. Is this a known "feature" of this version, or should I question my machine? 73-Larry. K4OZS

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