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

ARISSat-1 - Flikr Portfolio
by Clint Bradford 04 Aug '11

04 Aug '11

Sixty or so screenshots from NASA TV coverage of ARISSat-1 deployment. Same set as posted elsewhere by me this morning. Geeze ... possibly "old news" ALREADY to many ... (grin) http://www.flickr.com/photos/7532020@N03/sets/72157627350945598/ Clint Bradford clintbradford(a)mac.com

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Re: a little perspective
by Trevor . 04 Aug '11

04 Aug '11

Hi Bruce, Yes the NASA announcer said 4 satellites, presumbly refering also to the one that's still in Russia and 2 in the States ? Let's hope one more is sent up in time for the February space walk. It must cost the Russians about $150,000 to ship each ARISSat to the ISS and the cost of 2 cosmonauts spending half an hour during a space walk to deploy it must be astronomical - how much did the Canadian golf firm, Element 21 pay to buy a Cosmomauts time to hit a golf ball in space ? 73 Trevor M5AKA --- On Thu, 4/8/11, Bruce Robertson <ve9qrp(a)gmail.com> wrote: > I wonder if I might hope that the > outrage from us amchair cosmonauts > will abate by tomorrow. > > Let's take a look at what we need and what we've got: as > an > organization, we need cheap rides to space; but we have > some pretty > find satellite-building expertise. The relationship with > ISS will, if > we are reasonable, give us cheap rides. The NASA-TV > announcer > repeatedly said that ARISSAT-1 was the prototype of a > series of > satellites! Already, we've had the opportunity to fly our > first > SDX.The cost of making more along the lines of ARISSAT-1 is > minimal > compared to the cost of the ride, so this is a crucial > relationship. > > What does ISS want from our relationship? Probably, an > increased sense > of purpose: we get a ride, they get recognition, and > perhaps a bit > more TV time for the EVA, and a connection with student > research. > Here's where it counts for us to be polite in a difficult > situation. > Focusing on errors, nationalistic name-calling, and the > rest, just > diminish what they get out the bargain, and make things > more difficult > for those who work with us who have negotiated these > waters. > > Besides, I think the criticisms underestimate the technical > difficulty > and novelty of what we've been part of. I've watched many > EVAs, and > the feeling that things are not exactly going by plan is > pretty common > (even when Americans are running the show :-) How do you > most reliably > ship and store a small satellite to an orbiting space > station? How do > you most safely jettison it during EVA? As a species we > have very > little experience with this, and didn't get it 100% this > time. Surely, > kudos is due to AMSAT for being part of the group that is > trying to > answer these questions. > > Anyway, I have more fun thinking of it that way. And I'm > looking > forward to downloading as much telemetry for Kursk as I > can. > > 73, Bruce > VE9QRP > > -- > http://ve9qrp.blogspot.com > _______________________________________________ > 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 >

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5 in EM55
by wa4hfn＠comcast.net 04 Aug '11

04 Aug '11

Congrats to KM9U 5 in EM55 award #16 and K4FEG award #17 Good job guys WA4HFN em55

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Arissat-1 low/high power modes
by P.H. 04 Aug '11

04 Aug '11

After the last pass over the UK here I had a look at the switch on times and found that the last time it switched on, it stayed on.. times I noted were Power Off: 01:21:53 Power On: 01:23:56 Power Off: 01:24:40 Power On: 01:26:41 According to this it should've either switched off or come out of eclipse by 01:27:21 - it stayed on - so I rolled back my tracking software to 01:27:21 and found that the sat was barely out of eclipse.. right on the fringe. The power saving seems to switch off at the first sign of sun, there isn't a delay. Just my observations :-) 73 Pete 2i0VAX

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ARISSat over UK - 01.20utc Pass
by David Barber 04 Aug '11

04 Aug '11

UK Pass 01.20utc. 30dg Max elevation this pass but a fairly good signal received. 1 SSTV image plus several audio messages received. Two audio tlm as follows: MET = 404 minutes IHU Temp = +26C Control Panel Temp = +22C Battery Voltage = 33.09V Battery Current = +391mA MET = 406 minutes IHU Temp = +26C Control Panel Temp = +21C Battery Voltage = 33.40V Battery Current = +263mA Local QRM obliterating the CW/Telemetry frequency. >From the sound of the signal the satellite would appear to be tumbling slowly. Approx 6 seconds between nulls. Shows nicely on the SSTV image. David G8OQW ********

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Re: wav recordings solicited
by Roland Zurmely 04 Aug '11

04 Aug '11

To Phil Karn, Here is a recording from 23:34 UTC 03 Aug. over Brazil. My Doppler correction is not very good, but i can decode... I hope it is useful. http://www.qsl.net/py4zbz/zbz/03082334.wav My decoding is here: http://www.qsl.net/py4zbz/arissat.htm#a 73 de Roland PY4ZBZ

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Nice ARISSat story on local TV
by Gould Smith 04 Aug '11

04 Aug '11

A local TV station, WBIR produced a nice story about ARISSat launch today and its potential for STEM education. View at http://www.wbir.com/news/article/178784/2/STEM-education-reaches-new-heights 73, Gould

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ARISSat-1 AOS/LOS compared to ISS?
by Mark L. Hammond 04 Aug '11

04 Aug '11

It will be very helpful if observers will compare AOS/LOS to the ISS (until we get Keps). I suspect it's behind already, but by how much? 73, Mark L. Hammond [N8MH]

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LIVE telemetry from ARISSat-1 is now being received and updated on the web
by Douglas Quagliana 04 Aug '11

04 Aug '11

All, We now have LIVE BPSK telemetry from ARISSat-1. As it comes in, the telemetry will be updated on the web. You can see the latest telemetry that was received at http://www.arissattlm.org/mobile This web page was designed to be viewed on a cellphone or mobile device but you can still view it on a regular computer. Please note that the web page is ONLY updated when someone running ARISSatTLM receives the BPSK telemetry AND forwards it over the Internet, so it can be a long time between updates. If you can receive the BPSK telemetry but you can't forward it over the Internet, then please email your .CSV file to telemetry (at) arissattlm.org. 73, Douglas KA2UPW/5 "Please keep sending in your telemetry!"

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ARISSat over UK - 23.46utc Pass
by David Barber 04 Aug '11

04 Aug '11

UK Pass 23.46utc. 10dg Max elevation for the first UK pass but a fairly good signal received. 50% of an SSTV image plus two audio messages and the start of the audio tlm at the very end of the pass. MET = IHU Temp = +27C Control Panel Temp = Battery Voltage = Battery Current = Local QRM obliterating the CW/Telemetry frequency. >From the sound of the signal the satellite would appear to be tumbling slowly. David G8OQW ********

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