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

ARISSat over UK - 04.32utc Pass
by David Barber 04 Aug '11

04 Aug '11

UK Pass 04.32utc. 80dg Max elevation this pass, very strong signal received. 3 SSTV images from on-board cameras plus several audio messages received. Three audio tlm as follows: MET = 592 minutes IHU Temp = +26C Control Panel Temp = +22C Battery Voltage = 33.88V Battery Current = +391mA MET = 595 minutes IHU Temp = +26C Control Panel Temp = +22C Battery Voltage = 34.04V Battery Current = +378mA MET = 597 minutes IHU Temp = +26C Control Panel Temp = +21C Battery Voltage = 34.28V Battery Current = +247mA Apology - Previous posting for 02.56 pass showed Battery Current as -448mA it should have been +448mA Local QRM obliterating the CW/Telemetry frequency. Tumbling remains consistent at approx 6 seconds. David G8OQW ********

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Is that the 440 antenna?
by Clint Bradford 04 Aug '11

04 Aug '11

Look at your videos again. At 8:07AM PDT (about 17 minutes after hatch opening), you can see on the video the ARISSat-1. The 2M whippy antenna on the right/top of ARISSat-1. Is that the 440 antenna - bent - on the left/bottom of the satellite? Still screenshot posted at the bottom of ... http://web.me.com/clintbradford/k6lcs/EVA29-1.html Clint Bradford

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last pass
by Philippe Van houte 04 Aug '11

04 Aug '11

Hi during the last pass : 38 telemetry frames decoded 38 Kursk frames decoded Total : 76 frames forwarded signal : S9 and a lot of QSB 73 Phil on5pv

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0417 UTC pass East Coast
by Philip Jenkins 04 Aug '11

04 Aug '11

AOS was 0417, LOS 8.5 minutes later...only 13 degrees elevation for me in EM85tm/tn. Didn't hear anything until 0422 and then only for about 1 minute; not sure if it was BPSK or SSTV. Although signal was plenty strong, signal cut out at times, probably due to satellite tumbling. Antenna is the quad-band vertical Comet mounted on the car. The next pass is in about 90 minutes @ 45 degrees elevation. If a 13 deg pass sounded like that, I'm sure the 45 degree one will wake me up! :-) Philip N4HF (near Asheville, NC)

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Re: a little perspective
by Tom Schuessler 04 Aug '11

04 Aug '11

Hi all, I have not posted here for some months, I think since after the April Gregarine non-event. I expressed skepticism then on whether we would have an ultimate successful deployment. It is my hope that the new Board of Directors for AMSAT will look long and hard at this situation and come away with good lessons learned. We gave up far too much control in the name of International cooperation I think. That being said, I do disagree with the ideas presented in post 16 below and others who belittle the student satellite initiatives as "Squakboxes". As long as FCC or IARU or ITU or anybody else in the world's regulations about not using Amateur Radio frequencies for "Pecuniary" gain as it says in Part 97.3 (4) of our FCC rules, (Meaning you cannot make money off of the service or frequencies), then I have no problem with the use of amateur radio frequencies to further education and science training. Perhaps more of us should be volunteering our time working with these educational institutions developing cubesats and enlighten them on how providing real communications capabilities to these satellites, not just telemetry, could enhance the visibility of their projects. 73 Tom Schuessler, N5HYP ------------------------------ Message: 16 Date: Thu, 04 Aug 2011 03:21:19 +0000 From: Jim Jerzycke <kq6ea(a)verizon.net> Subject: [amsat-bb] Re: a little perspective To: Bruce Robertson <ve9qrp(a)gmail.com> Cc: AMSAT-BB <amsat-bb(a)amsat.org> Message-ID: <4E3A102F.5030707(a)verizon.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed I'm sorry, Bruce, but I'm not buying it. It was a screw-up, plain and simple. And we can't make lemonade out of it. At least AO-40 had a usable life for some. This thing is just another squawk box in space, like all the "student" satellites that are using the Amateur Radio frequencies for a free downlink. Jim

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ARISSAT-1/Kedr Heard in Florida
by Mike Schaffer 04 Aug '11

04 Aug '11

ARISSat-1/Kedr heard in voice on 145.950 FM at 0420 UTC at 30deg elevation towards southeast with moderate fades with a 3db average RF strength. Mike Schaffer/KA3JAW

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Heard-ARRISat
by Dee 04 Aug '11

04 Aug '11

Good sigs into NJ. Passed south of me and had 4 to 5 second nulls. Insuficient time to decode anything. Very strong FM downlink. Good audio copy. Will try to give more reports in am. Congrats on what we have... Dee, NB2F Dee Interdonato 118 Westervelt Place Lodi, NJ 07644 973-772-8229

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ARISSat-1 Battery Condition
by Clint Bradford 04 Aug '11

04 Aug '11

>> ... Battery voltage around 33V status - charging. -David G0MRF Wow - I showed the battery at 28.891 during a pass last weekend. Solar panels are going their jobs! Sorry ... too old for this much excitement in one day ... Clint Bradford http://web.me.com/clintbradford/k6lcs/EVA29-1.html

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ARISSat-1 reception report
by Maurizio IV3RYQ 04 Aug '11

04 Aug '11

Hi, here telemetry data heard over Europe 04 aug at 03.00-03.08 utc. ' 73 Maurizio IV3RYQ

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ARISSat over UK - 02.56utc Pass
by David Barber 04 Aug '11

04 Aug '11

UK Pass 02.56utc. 80dg Max elevation this pass, very strong signal received. 2 SSTV images plus several audio messages received. One audio tlm as follows: MET = 501 minutes IHU Temp = +26C Control Panel Temp = +21C Battery Voltage = 33.92V Battery Current = -448mA Missed a second tlm whilst trying the transponder, see below. Local QRM obliterating the CW/Telemetry frequency. Tumbling seems to have remained consistent. Gave the transponder a try with 50W to an omni whilst the satellite was at its closest but couldn't hear anything in the downlink passband. David G8OQW ********

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