February 2007 - AMSAT-BB - mailman.amsat.org

AO-51 software crash tonight
by Andrew Glasbrenner 14 Feb '07

14 Feb '07

The command team has reported that the satellite software crashed tonight (~0100Z, 13FEB07) after uploading a new housekeeping program. It will take a few days at minimum to reload and get the repeater back on the air. Mike, Gould and Jim have made leaps and bounds of progress on improving the satellite software. When finished and loaded we will release descriptions of the improvements made and how they will work. Please excuse the absence of AO-51 for a few days while they get everything back up and running. 73, Drew KO4MA AMSAT-NA VP of Operations LM 2332

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AO-51 PASS @ 0150Z Thisevening
by sraas＠optonline.net 14 Feb '07

14 Feb '07

I have some pretty interesting WX today.. very ovrcst, sleet and snow. No ice on antennas (yet). I did not hear AO-51 on this last pass at all. I was wondering if it was being worked on.. or is it possible that the WX completly blocked the Downlink. I typically have a very very srtong sig from AO-51 not that s-units are accurate.. but between s6-s8 is typical for me. -Steve Raas N2JDQ FN20vg

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[Fwd: [tapr-announce] HPSDR Janus and Ozy Board Production Announcement]
by Robert McGwier 14 Feb '07

14 Feb '07

-- AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL, TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair "Taking fun as simply fun and earnestness in earnest shows how thoroughly thou none of the two discernest." - Piet Hine

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ANDE-1 telemetry analysis
by Mineo Wakita 13 Feb '07

13 Feb '07

12 Feb 2007 !S 08:59:57 !ANDE-1>BEACON:T#001,107,126,127,126,128,10101110,260 !S 09:00:48 !ANDE-1>BEACON:T#002,002,015,013,008,007,01000000,916 Temp Batt A 16.16763 C Temp Batt B 0 C Temp Laser 0 C Temp Solar X 22.42376 C Temp Solar Y 22.75703 C Temp Solar Z 22.42376 C Temp Retro 23.09112 C A1 Current 21.5 mA A2 Current 18.1 mA B1 Current 9.6 mA B2 Current 7.9 mA http://www.dk3wn.info/sat/afu/sat_maa.shtml --------------------------------------------- Name: Mineo Wakita / JE9PEL, JAMSAT member Mail: ei7m-wkt(a)asahi-net.or.jp URL : http://www.ne.jp/asahi/hamradio/je9pel/ QTH : Yokohama Japan, GL:pm95tj Date: Feb 13, 2007 ---------------------------------------------

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Satgate connection
by Paulo Pinto 13 Feb '07

13 Feb '07

Hi, I am having problems connecting to satgate with Alogger (both 2.4 and 3.0 versions). I've tried satgate.aprsca.net and socal.aprs2.net. I wonder if the problem is at my side or anyone is having the same problem. I didn't see any news about server problems. 73 CT1ETE, Paulo

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HPSDR Janus and Ozy Board Production Announcement
by Scott Cowling 13 Feb '07

13 Feb '07

*** TAPR ANNOUNCES PRODUCTION OF HPSDR JANUS OZY BOARDS *** High Performance Software Defined Radio Project (HPSDR) *IMPORTANT* TAPR and HPSDR need your input! Please help us by visiting Dale's (WA8SRA) HAMSDR website (see below) and let us know if you are interested in purchasing Janus and/or Ozy bare or assembled boards for delivery by May. THIS IS NOT PLACING AN ORDER; IT IS AN EXPRESSION OF INTEREST SO THAT WE CAN MORE ACCURATELY DETERMINE HOW MANY BOARDS TO ORDER AND ASSEMBLIES TO MAKE! This opportunity will end on Tuesday, February 20th at 0200 UTC. To register your interest you need to go to the Dale's (WA8SRA) HAMSDR website, in the projects section. If you are a member and have previously expressed interest in these projects, log in and re-enter your quantities of each board. NOTE: Previous quantities have been reset to zero so you WILL HAVE TO RE-ENTER QUANTITIES. If you are new to HPSDR and Dale's Website, please join for instant access by providing the information requested. Go to: <http://www.hamsdr.com/>HTTP://www.hamsdr.com Login and go to Projects > TAPR-HPSDR and click on <Indicate Your Interest> button to create a new record for entering your quantities. What is HPSDR? <http://hpsdr.org/>http://hpsdr.org What is an Ozy? <http://hpsdr.org/ozy.html>http://hpsdr.org/ozy.html What is a Janus? <http://hpsdr.org/janus.html>http://hpsdr.org/janus.html There are many other HPSDR projects in design and testing; most will require the Janus and Ozy boards.

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astronaut-safety & irony
by Nate Duehr 13 Feb '07

13 Feb '07

Bob, You won't be needing all those redundant power switches for your next ISS-attached satellite... they'll turn the power off for you at random intervals! (GRIN). http://www.nasa.gov/mission_pages/station/main/index.html "Early Sunday morning the International Space Station experienced a power outage. By Monday morning all systems were back in operation. No systems were permanently affected and there was no impact to crew safety or station science. A communications system that was temporarily down was restored shortly afterwards. One gyroscope that helps control the station's orientation went offline for awhile but eventually came back up. Several heaters used for thermal balance of external station components were affected but have since resumed normal operations." Comms down... Gryos offline... Thermal problems with external systems ... not a crew safety issue. 2W transmitter outside in a box... better put four safety-rated power switches on that puppy! LOL! Go spin Doctors, go! Nate WY0X

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AO-51 passes over Colorado tomorrow
by Andrew Glasbrenner 13 Feb '07

13 Feb '07

Tomorrow morning the command team will enable the 2.4 gHz and switch the 435.300 MHz transmitters on AO-51 to run 38.4k digital simultaneously for just the portions of the 1st and possibly 2nd passes over the US Air Force Academy in Colorado. This is in further support of the AFA as they prepare for the launch of Falconsat-3, which has a significant amateur payload onboard. If all goes well this should be the last change in schedule for this week. 73, Drew KO4MA

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Looking for some new tracking hardware?
by Jack KZ4USA 13 Feb '07

13 Feb '07

Im going to be using a TS-2000 and TRX-manager with the G-5400 rotors. Who is making some hardware trackers nowadays. Jack KZ4USA

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RAFT and ANDE speech callsigns
by Robert Bruninga 12 Feb '07

12 Feb '07

Now that ANDE and RAFT are both speaking, here are the packet-to-voice synthesizer rules: 1) it turns the packet header into "XXXXXX says" 2) it then speaks normal english and normal spellings.. 3) It tries to spell CAPS, but we found that to force it to speak a callsign correctly independent of starting character if you make the second character a "!" then it will always speak properly. Such as W!B4APR will be spoken as wb4apr as expected. Here are DK3WN and PE1ITR in packet-to-voice QSO: http://www.ew.usna.edu/~bruninga/ande/ande_11022007_2238.mp3 WB4APR, Bob ----original message----------------------------------------- RAFT is weaker, but speaks... * if ANYONE has CONNECTED RAFT * Then any APRS MSG to TALK will be spoken ANDE is stronger, but is lazy and sleeps unless woken up. * ANDE must be awakened by 145.825 activity * ANDE voice must be activated by command station each pass * Then any APRS MSG to TALK will be spoken ANDE has better link performance for users, but needs command stations, but you get more workable passses due to its better links. For more info, see the ANDE-RAFT-OPS web page. http://www.ew.usna.edu/~bruninga/ande-raft-ops.html Enjoy! Bob Bruninga, WB4APR US Naval Academy Satellite Lab

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