AMSAT-BB January 2010

213 participants
317 discussions

by Clint Bradford

PATRICK - ONE OF THE HARDEST WORKIN' AMSAT-TERS>> ... I will have a demonstration using the AO-27 satellite just after 2.00pm ... I am showing a pass at 1:01PM Pacific - is that the same pass, Patrick? I will be working it at the Desert RATS HamFest in Palm Springs. Clint, K6LCS

12 years, 3 months

Re: [Mw] Satellite to carry Amateur Radio 5840.00 MHz telemetry beacon

by Stan

This satellite holds some promise of a decent and doable microwave technical challenge. It will be possible to use our 5760 Transverters for a RX only application, maybe with minor tweaking. The LO is 5616 MHz, with the RF of 5840 MHz, the IF is 224 MHz, right in the US 222 MHz band. Maybe with a bigger dish, and a very low noise figure preamplifier, optimized at 5840 MHz, we could be in the UNITEC-1 deep space telemetry collection business. The DEMI A32 LO with an external 10 MHz reference, can add the frequency stability needed. Or maybe Steve, N5AC, can preprogramm the A32 for a 5,840-145= 5,695 / 5 = 1,139.0 MHz A reasonable challenge this winter morning, as I sip my lukewarm tea at the dining room table. But more questions are raised: 1. Keplerian elements are great for satellites, but once UNITEC1 enters deep space, what do we use to calculate and predict the path for our accurate tracking ? 2. Is there anything special about the modulation scheme ? Stan, W1LE Cape Cod FN41sr Trevor . wrote: > On May 20 Japan is planning to launch four "CubeSats". The largest of them, UNITEC-1, will carry a 15 watt Amateur Radio 5840.00 MHz telemetry beacon and travel into deep space towards Venus > > Three of the satellites will carry Amateur Radio payloads. On the AMSAT bulletin board Mineo Wakita JE9PEL writes > > Four CubeSats in Japan are planned to launch at 20 May 2010 > together with PLANET-C which belongs to JAXA by H-IIA rocket. > http://www.jaxa.jp/index_e.html > > UNITEC-1, NPO UNISEC (University Space Engineering Consortium) > 5.8GHz > http://www.unisec.jp/unitec-1/en/top.html > > Negai*", Soka University > 437.305MHz CW, Packet 1200bps FSK AX.25 > http://kuro.t.soka.ac.jp/main.html > > WASEDA-SAT2, Waseda University > 437.485 MHz CW(FM), PCM-FSK(FM) 9600bps > http://www.miyashita.mmech.waseda.ac.jp/Waseda-Sat2/index.htm > > KSAT, Kagoshima University > Uplink: S-band(2GHz, 10kbps), Downlink: Ku-band(13.275GHz, 10kbps/1Mbps) > http://www.sci.kagoshima-u.ac.jp/~nishio/download/Ukaren2008Nishio.pdf > > IARU Amateur Satellite Frequency Coordination information > Unitec-1 http://www.amsat.org.uk/iaru/finished_detail.asp?serial=141 > Negai http://www.amsat.org.uk/iaru/finished_detail.asp?serial=90 > WASEDA-SAT2 http://www.amsat.org.uk/iaru/finished_detail.asp?serial=123 > > AMSAT Bulletin Board AMSAT-BB > http://www.amsat.org/amsat-new/tools/maillist/ > > AMSAT-UK publish a colour A4 newsletter, OSCAR News, that is full of Amateur Satellite information. > Join online at https://secure.amsat.org.uk/subs_form/ > ---- > 73 Trevor M5AKA > Daily Amateur Radio News (Email/RSS): http://www.southgatearc.org/ > Email Your News To: editor at southgatearc.org > Or Use Form at: http://www.southgatearc.org/news/your_news_1.htm > --- > > > > > > > _______________________________________________ > Microwave mailing list > microwave(a)lists.valinet.com > http://www.valinet.com/mailman/listinfo/microwave > >

12 years, 3 months

FO-29 transponder ON

by Mineo Wakita

JARL says: We turned on an analog transponder in 11:22 UTC on January 27. We want to confirm the battery budget by the decrease of the eclipse rate. JE9PEL, Mineo Wakita

12 years, 3 months

I: FO-29 transponder ON

by Francesco Grappi

HI, All This evening, at 17.30 utc FO-29 pass over Europe, I had A nice qso with SP7TEC, OZ1MY and I1TEX. Excellent signal from FO-29 back. Thank you very much to JARL Commander Team for their effort to keep ever FO-29 in good shape !!! 73" Frank IW4DVZ -----Messaggio originale----- Da: amsat-bb-bounces(a)amsat.org [mailto:[email protected]] Per conto di Mineo Wakita Inviato: giovedì 28 gennaio 2010 16.53 A: amsat-bb(a)amsat.org Oggetto: [amsat-bb] FO-29 transponder ON JARL says: We turned on an analog transponder in 11:22 UTC on January 27. We want to confirm the battery budget by the decrease of the eclipse rate. JE9PEL, Mineo Wakita _______________________________________________ Sent via AMSAT-BB(a)amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

12 years, 3 months

PLANET-C, UNITEC-1 movie and overview

by Mineo Wakita

PLANET-C movie (C)JAXA http://www.youtube.com/watch?v=E5rzIsDNrL4 PLANET-C overview (C)JAXA http://www.jaxa.jp/projects/sat/planet_c/index_e.html UNITEC-1 movie (C)Aichi University of Technology, Kawaju Gifu Engineering Co.,Ltd.) http://www.unisec.jp/unitec-1/files/movie/UNITEC-1_20090817.wmv UNITEC-1 overview (C)UNISEC http://www.unisec.jp/unitec-1/en/top.html JE9PEL, Mineo Wakita http://www.ne.jp/asahi/hamradio/je9pel/unitec-1.htm

12 years, 3 months

Re: Cor's picture

by Cor

Hello Andy, Thanks for the comment. It is always nice to see an orginal photo to compare what came down (from ISS) in the SSTV mode. Sadly I could not get the full image because the ISS was close to LOS. I hope some others (in countries more east) have catched more of that image (or others) and upload it via: http://www.amsat.org/amsat/ariss/SSTV/submit.php ARISS SSTV Gallery public page: http://www.amsat.org/amsat/ariss/SSTV/ ARISS SSTV blog for info: http://ariss-sstv.blogspot.com/ 73's Cor PD0RKC

12 years, 3 months

Cor's picture

by andy thomas

Cor's picture from the ISS of 2010-01-28 11:23:00 has been used before in Max Suarev's blog - see http://rt.com/About_Us/Blogs/orbital-log/2010-01-07.html and http://www.federalspace.ru/main.php?id=48&page=2 73 de andy g0sfj

12 years, 3 months

ISS SSTV

by David Barber

Active at 09.38UTC over Europe. Mode: PD160 David G8OQW

12 years, 4 months

Re: Best dualband FM rigs

by K8KFJ＠aol.com

In a message dated 1/28/2010 1:36:12 A.M. Eastern Standard Time, sq7dqx(a)poczta.onet.pl writes: > Old TH77E (full duplex) by Kenwood could be > a good choice My old FT-470 has served me well. 73, Gary -K8KFJ- West Virginia Sat VUCC #125

12 years, 4 months

Presentation/demo @ Mesa AZ on Saturday (30 January)

by Patrick STODDARD (WD9EWK/VA7EWK)

Hi! I will be giving a presentation for the Mesa Community College Amateur Radio Club (KM7CC): http://km7cc.com/ on Saturday, 30 January, at approximately 12.30pm (1930 UTC). The meeting will be in the TC50 building on the southeast corner of the Mesa Community College campus: http://www.mc.maricopa.edu/campus_map.pdf which is along Dobson Road between Southern Avenue and the Superstition (US-60) freeway in Mesa AZ. The campus, which is also the site of an annual hamfest every December, is in grid DM43bj. Following the presentation, I will have a demonstration using the AO-27 satellite just after 2.00pm (2100 UTC) outside the TC50 building. For the AO-27 demonstration, I will use the club's callsign KM7CC. After the demonstration, all stations making contacts with KM7CC on that pass will receive QSL cards for those contacts. Hope to hear many of you on that pass. 73! Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/

12 years, 4 months

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AMSAT-BB January 2010