April 2008 - AMSAT-BB - mailman.amsat.org

Re: AMSAT-Australia and the Ozsatgroup unite.
by Dave Guimont 12 Apr '08

12 Apr '08

>You may not be aware that AMSAT-Australia and the Ozsatgroup have > amalgamated, and that the new combined group has retained the name > AMSAT-Australia. > > AMSAT-Australia and the Ozsatgroup have been working together for more > than two years, and have been discussing such an amalgamation for some > time. > > The decision to go ahead with the amalgamation was made after Graham > Ratcliff, VK5AGR formally tended his resignation as AMSAT-Australia > National Coordinator and as AMSAT Coordinator for the Wireless > Institute of Australia (WIA) in his annual report to the WIA 2008 Thank you Paul!! Graham has made so many contributions to Amateur Satellites, long before AMSAT "was invented", since Oscar 1, and you have a lot of courage to step into "such big shoes"..... I am proud to have known him. My very best to you, and if I can contribute in any way, let me know... Tnx agn, 73 Dave 73, Dave, WB6LLO dguimon1(a)san.rr.com Disagree: I learn.... Pulling for P3E...

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AMSAT-Australia and the Ozsatgroup unite.
by Paul Paradigm 12 Apr '08

12 Apr '08

You may not be aware that AMSAT-Australia and the Ozsatgroup have amalgamated, and that the new combined group has retained the name AMSAT-Australia. AMSAT-Australia and the Ozsatgroup have been working together for more than two years, and have been discussing such an amalgamation for some time. The decision to go ahead with the amalgamation was made after Graham Ratcliff, VK5AGR formally tended his resignation as AMSAT-Australia National Coordinator and as AMSAT Coordinator for the Wireless Institute of Australia (WIA) in his annual report to the WIA 2008 Federal Convention on Monday, 7th Aprill 2008. The role of AMSAT-Australia National Coordinator has been taken on by myself Paul Paradigm, VK2TXT, formally the Coordinator of the Ozsatgroup, and joined by Judy Williams, VK2TJU in the role of AMSAT-Australia Secretary. The updated AMSAT-Australia web address has not changed - www.amsat-vk.org I would like to take this opportunity on behalf of both the Amateur Radio operators on the AMSAT-Australia mailing list and the members of the former Ozsatgroup to thank Graham for his outstanding contribution to the Amateur Radio community here in Australia and around the world. Graham has been in the role of AMSAT-Australia National Coordinator since 1983, and has been the driving force behind AMSAT-Australia since its inception. Visit our website for more information. 73's Paul – VK2TXT AMSAT-Australia National Coordinator.

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Telemetry posts
by Mark L. Hammond 12 Apr '08

12 Apr '08

I concur with Chris. I cannot thank Mike DK3WN enough for all of the help he has provided my ability to capture and decode telemetry. In fact, without his help, I wouldn't be able to do much with AO-16 and its telemetry... His occasional posting of telemetry is a good reminder that these birds are alive and working well. He doesn't post every telemetry frame, every day. His posts are periodic and helpful. So...THANKS Mike :) 73, Mark N8MH >Date: Fri, 11 Apr 2008 21:40:18 +0100 >From: Chris Bloy <chris(a)photofuture.co.uk> >Subject: [amsat-bb] Re: LO-19 Apr 11, 2008 >To: <amsat-bb(a)amsat.org> >Message-ID: <20080411203948.84BKdme00WWmi(a)mailbox6.ucsd.edu> >Content-Type: text/plain; charset="iso-8859-1" > > >Hi, > >I don't agree, this is informative and lets us know that these old birds are still there.. > >Well done Mike on providing this info. > >Thanks ' >Chris - M0DQO >-----Original Message----- >From: "Alex Perez" <aperez(a)alexperez.com> >To: "Mike Rupprecht" <mail(a)mike-rupprecht.de> >Cc: amsat-bb(a)amsat.org >Sent: 11/04/08 21:04 >Subject: [amsat-bb] Re: LO-19 Apr 11, 2008 > >Has anyone here ever considered spiltting the ML in half for this kind >of "spam"? I enjoy lurking here but these get old fast. > >On Apr 11, 2008, at 11:04 AM, Mike Rupprecht wrote: > >> .and the last one - LO-19 heard at 1618 UTC >> >> >> >> ao ava abu tb4 anv tbt anv avd ae6 >> >> ao ava abu tb4 anv tbt anv avd ae6 >> >> ao ava abu tb4 anv t6n anv avn ae6 >> >> ao ava abv tb4 anv t6n anv avn ae6 >> >> ao ava abu tb4 anv t6n an4 avn ae6 >> >> ao ava abv tb4 anv t6n anv avn ae6 >> >> ao ava abv tb4 anv t6n an4 avn ae6 >> >> ao ava abv tb4 anv t6n anv a4a ae6 >> >> ao ava abv tb4 anv t6n an4 a4u ae6 >> >> >> >> that was an good practice for CW within 30 minutes . >> >> >> >> 73, Mike >> >> DK3WN Mark L. Hammond [N8MH]

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On April 12, 1961 - Vostok 1, with Senior Lieutenant Yuri Alexeyevich Gagarin
by Tom Clarke 12 Apr '08

12 Apr '08

On April 12, 1961 the first earthling escaped the gravity well of planet earth. In the spaceship Vostok 1, Senior Lieutenant Yuri Alexeyevich Gagarin orbited earth one time at an altitude of 187 3/4 miles (302 kilometers) for 108 minutes at 18,000 miles an hour. He was the first man to see that the earth was indeed round, indeed mostly water, and indeed magnificent. E-mail message checked by Spyware Doctor (5.5.0.212) Database version: 5.09610 http://www.pctools.com/en/spyware-doctor/

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On April 12, 1961 - Vostok 1, with Senior Lieutenant Yuri Alexeyevich Gagarin
by Tom Clarke 12 Apr '08

12 Apr '08

On April 12, 1961 the first earthling escaped the gravity well of planet earth. In the spaceship Vostok 1, Senior Lieutenant Yuri Alexeyevich Gagarin orbited earth one time at an altitude of 187 3/4 miles (302 kilometers) for 108 minutes at 18,000 miles an hour. He was the first man to see that the earth was indeed round, indeed mostly water, and indeed magnificent. http://www.abamedia.com/rao/gallery/gagarin/ Tom - Ei6EH ----------------- E-mail message checked by Spyware Doctor (5.5.0.212) Database version: 5.09610 http://www.pctools.com/en/spyware-doctor/

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"Telemetry Spam"
by John Marranca, Jr 12 Apr '08

12 Apr '08

I also appreciate an update on TLM of the various satellites, since I listen for...and study...and report on the health and "fitness" of several of them. Alex...I will always RESPECT your opinion, but please....don't heckle or belittle the interests or pursuits of others. Think of it this way....it was the collection of your so-called SPAM TLM that led to AO-16's new life. Thank you, Mike...for doing what some of us haven't had time to do ourselves! John KB2HSH -- _______________________________ John Marranca, Jr PBX Technician/Shop Steward CWA Local 1122 BN Systems, Inc Orchard Park, NY (716)972-2006

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CV1LAI - Globosat 01
by CX2SA Ham Radio Services 12 Apr '08

12 Apr '08

*** CV1LAI - Globosat 01 *** Globosat 01 is the first uruguayan telemetry test from high altitude balloon of the LAI Project. CX0CFI (Club Facultad de Ingenieria) invites to the amateur radio community to participate and report telemetry data. * Date To be defined. Probably on Thursday 24 of April of 2008 (15:00 UTC aprox.) * Trajectory and flight plan The globosat will come out from the department of Durazno (central Uruguay), what would allow the recovery of the team inside national territory. The balloon should ascend to a speed of between 200 and 300 meters per minute, and to arrive until a maximum height of approximately 30.000m (like reference, the commercial flights go at 10.000m). Arrival that height, the difference of pressure among the interior and external of the balloon makes it explode. The equipment will fall with parachute. * Telemetry The platform send telemetry information in standard APRS format in 2m. band. The APRS message goes encapsulated in a AX.25 (Packet) frames and modulated in AFSK (1200 bps) FM. * Data: Callsign: CV1LAI (special callsign for the Globosat during these days) Mode: APRS (over AX.25 1200bps) Frequency: 145.030 MHz Power: 1W. Antenna: dipole 1/2 wavelenght in vertical position. * Web site of the LAI Project: http://iie.fing.edu.uy/twiki/bin/view.cgi/Satelite/GloboSat01Instructivo http://iie.fing.edu.uy/twiki/bin/view.cgi/Satelite/GloboRadiacion01 * E-mail: CX0CFI(a)fing.edu.uy Many thanks and have a nice day. Jose - CX2SA Ham Radio Services - http://www.cx2sa.net

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Cubesat question
by William Leijenaar 12 Apr '08

12 Apr '08

Hi AMSATs, It has been a long time ago that I have been active "on-air", and here on AMSAT-BB. Reason is to little time, and because of that I choose to improve my home lab and spend my late after work hours there, and not in front of the rigs hihi... It is very interresting to see the work of the Delfi team, and they are now on the place where I was in 2005 with the Indian HAMSAT (VO-52) :) I can tell you its a hot place, in matters of sun and also hot (spicy) food hihi... I wish the team a good launch, and I will spend some more time to get my station ready to receive Delfi after launch... I have not been active "on-air", but even more active with designing some new transponders. The reason I had to improve my home lab is because I wanted to design a very small transponder, that would fit easily in 1-cube satellite. With 0805 SMD this was even not possible anymore, so I went even to smaller sized SMD. (I guess the next step is my own made chip hihi). My final design ended up in a 7cm x 7cm x 0,4cm prototype version. I guess this is small enough to fit in a cubesat :) Some details: Mode-B, Power supply 3.3V, >500mW PEP out, 30kHz Bandwidth (flat), with AGC, CW beacon incl, ~200 grams weight. Now I am fixing up my design to get it from a home made prototype into a more profesional "flight" version. My idea is to make several of these transponders, and make them also available for other (cube)sat groups. However, now I am stuck with the question what the standards are for mounting hardware in cubesat structures. I don't have a cubesat (for the moment) because they are not in the cheap price class for me as a ham. On the other hand I have no experience in any cubesat project, and don't know all the ins and outs. Maybe some cubesat expert can give me an idea how to make my final PCB (screw holes, sizes) in an efficient way to have my 7cm x 7cm x 0.4cm fit in other cubesat projects, in case some group will be interrested. Beside my analog transponder I also like to have a pacsat system, to have it together in my future own cubesat. The pacsat system is an efficient system and I think its worth to have it back again. Does anyone know if there is a group or ham that made (can make) such a system in cubesat format ? With todays small sized, low voltage, high speed and high amount of memory processors it should be no problem for a digital guru I guess. (I mean the pacsat system like KO-23/25 alike). Thats all AMSATs, Enjoy the sats, and listen for Delfi... the next linear transponder :) 73 William PE1RAH --- __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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Re: DX watering Hole
by Dave Guimont 12 Apr '08

12 Apr '08

How does 145.957-145.960 sound as our DX "hot spot"? Good idea, Bob for those of you that can take advantage of the "low" LEO's we have left! FO29 with its altitude gave us a shot here in San Diego, but unless some DXpedition goes to Siberia it wouldn't do us much good!! I get on O7 and VO52, and often find no takers... From where are you getting competition up there?? 73, Dave, WB6LLO dguimon1(a)san.rr.com Disagree: I learn.... Pulling for P3E...

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Demo Videos
by Ken Owen 12 Apr '08

12 Apr '08

Hi folks: One of the Amsatnet.com Podcasts mentioned demo videos by KI4HXT and N4HY. The URLs were supposed to have been on the amsatnet.com page, but I can't find them there. Does anyone know where I can get a copy of these files? I have a demo coming up two weeks, and I have about an hour and a half to fill. A good demo video will set up my own demo quite nicely. Does anyone have any suggestions? Thanks, Ken, N6KTH

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