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

ANDE and RAFT in view at the same time
by Robert Bruninga 13 Apr '07

13 Apr '07

ANDE and RAFT are coming over at the same time tonight. Lots of time to play packet and maybe packet-to-voice on 145.825. http://www.ew.usna.edu/~bruninga/ande-raft-ops.html Good luck WB4APR

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Re: office closed
by David Bird 13 Apr '07

13 Apr '07

HAPPY BIRTHDAY MARTHA! THANKS FOR ALL YOU DO" 73, DE KC7USS _________________________________________________________________ i'm making a difference. Make every IM count for the cause of your choice. Join Now. http://clk.atdmt.com/MSN/go/msnnkwme0080000001msn/direct/01/?href=http://im…

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Slightly OT: Preliminary mishap report for Mars Global Surveyor
by Joe Fitzgerald 13 Apr '07

13 Apr '07

NASA has just released their preliminary report on the Mars Global Surveyor failure earlier this year. Food for though for those of us who worry about spacecraft (and software) reliability. Ammunition for those that hate to put computers on board! Follow links from: http://www.nasa.gov/mission_pages/mgs/ -Joe KM1P

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Re: Amateur Rockets?
by Martyn Kinder 13 Apr '07

13 Apr '07

Bob, see http://www.lokiresearch.com/arts.asp It looks like they used 900MHz for the downlink Regards Martyn == Martyn Kinder G0CZD http://www.czd.org.uk P Please consider the environment - do you really need to print this email? There are 10 types of people in the world - those who understand Binary and those who don't... Message: 5 Date: Thu, 12 Apr 2007 10:36:55 -0400 From: "Robert Bruninga" <bruninga(a)usna.edu> Subject: [amsat-bb] Amateur Rockets? To: "'AMSAT'" <amsat-bb(a)amsat.org> Message-ID: <019601c77d10$0472a740$42577a83(a)ewlab.usna.edu> Content-Type: text/plain; charset="us-ascii" Did the telemetry system on this student build rocket include ham radio? Anyone know details? On the web page I can't find anything about the electronics. Bob EMBRY-RIDDLE GOES BALLISTIC Late last month students at Embry-Riddle Aeronautical University (ERAU) sent a two-stage rocket into the upper atmosphere. With 3,500 pounds of thrust in the first stage and 900 pounds in the second, school officials said it set a student-built vehicle record of 37.8 miles (space normally begins at 62 miles). It was launched from the NASA Wallops Flight Facility in Virginia and reached a top speed of Mach 4.04. The 16-foot-long rocket weighed 268 pounds gross and carried a 15-pound payload, including a telemetry system. For more information and a video of the launch, see the Web site. http://projectmanager.erfseds.googlepages.com/

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Fw: Google Honors Gagarin on Anniversary
by Tom Clarke 13 Apr '07

13 Apr '07

----- Original Message ----- From: "Christian Kj æ rnet" <ckjarnet(a)broadpark.no> To: <SeeSat-L(a)satobs.org> Sent: Thursday, April 12, 2007 7:31 PM Subject: Google Honors Gagarin on Anniversary > > Googgle today honors Yuri Gagarin on the anniversary of the first human > space flight 12 April 1961. Go to www.google.com and observe the logo, or > click on the logo to get a Google search for Gagarin, bringing up a > Wikipedia article on him. Interesting read. > > The flight was named Vostok 1; NORAD No. 103 (1961-012A) and has > definitely > decayed. > > Sorry for the slightly OT. > > Christian > > -- > Christian Kjaernet > > > > ------------------------------------------------------------------------- > Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: > http://www.satobs.org/seesat/seesatindex.html > > >

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DSP Speaker
by n3wwn＠futuretek.cx 13 Apr '07

13 Apr '07

Hi! I recall reading about a speaker that you can plug into any radio so you can keep the squelch open all the time and a DSP will only let audio with signals through. It was intended to be used to listen for beacons on satellites as well as listen for band openings without driving the XYL crazy with static being blasted through the house. Does anyone else recall this speaker (or inline module)? I've searched and found DSPs that will attenuate white noise, but I haven't seen any that turn off the speaker completely in the presence of white noise alone. 73 de Rich N3WWN

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FO29 NEXT PASS
by W1FC＠aol.com 12 Apr '07

12 Apr '07

If anyone will be on the next orbit (52605), there is a short window from here in SE Florida and parts of Western Europe, I will be on looking for EU Thanks Fred W1FC/4 ************************************** See what's free at http://www.aol.com.

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Amateur Rockets?
by Robert Bruninga 12 Apr '07

12 Apr '07

Did the telemetry system on this student build rocket include ham radio? Anyone know details? On the web page I can't find anything about the electronics. Bob EMBRY-RIDDLE GOES BALLISTIC Late last month students at Embry-Riddle Aeronautical University (ERAU) sent a two-stage rocket into the upper atmosphere. With 3,500 pounds of thrust in the first stage and 900 pounds in the second, school officials said it set a student-built vehicle record of 37.8 miles (space normally begins at 62 miles). It was launched from the NASA Wallops Flight Facility in Virginia and reached a top speed of Mach 4.04. The 16-foot-long rocket weighed 268 pounds gross and carried a 15-pound payload, including a telemetry system. For more information and a video of the launch, see the Web site. http://projectmanager.erfseds.googlepages.com/

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Office Closed
by MARTHA SARAGOVITZ 12 Apr '07

12 Apr '07

I will be out of the office tomorrow (Friday, April 13th) It's my birthday!!! 73- Martha, AMSAT

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Fw: Satellite Database Update 4-9-07 Union of Concerned Scientists
by Roger Kolakowski 12 Apr '07

12 Apr '07

For the list's perusing pleasure... Roger WA1KAT ----- Original Message ----- From: "SatelliteData Mailbox" <SatelliteData(a)ucsusa.org> Sent: Wednesday, April 11, 2007 11:54 AM Subject: Satellite Database Update 4-9-07 Union of Concerned Scientists > A new version of the UCS Satellite Database, which includes launches > through April 6, 2007, has been posted at > http://ucsusa.org/satellite_database . > > The new Excel format file is called > *UCS_Satellite_Database_4-9-07.xls* and the tab-delimited text > version is called *UCS_Satellite_Database_4-9-07.txt*. > The tab-delimited text version in which the *Name* column contains > only the official name of the satellite in the case of government and > military satellites, and the most commonly used name in the case of > commercial and civil satellites is called > *UCS_Satellite_Database_officialname_4-9-07.txt*. > > The other changes to this version of the database include: > The addition of 18 satellites > The deletion of 16 inactive satellites > The addition of and corrections to some satellite data > > We have incorporated your corrections and suggestions as we were able, > and continue to welcome your comments. > > The UCS Satellite Database Manager > SatelliteData(a)ucsusa.org > >

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