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

Re^2: CubeSats new TLE
by Mineo Wakita 29 Apr '08

29 Apr '08

plus one more again! OBJECT G 1 32789U 07021G 08119.60740078 -.00000054 00000-0 00000+0 0 13 2 32789 098.0082 179.6267 0015321 307.2977 051.0656 14.81417433 68

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C3 heard at KM17VX
by Kostas Ioannidis 29 Apr '08

29 Apr '08

I heard c3 at 18:00 utc at a low east pass (10deg elevation max.) . Signal was low so packets could not be decoded. 73 de sw1ixp

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Delfi-C3
by Miroslav Kasal 29 Apr '08

29 Apr '08

Congrats Delfi-C3 team! Just now on April 28 at 18.02 UTC on 145.930 MHz the telemetry from Delfi-C3 was received here in Brno JN89hf: from: DLFIC3 to: TLM a8 98 9b 40 40 40 00 88 98 8c 92 86 66 01 03 f0 fc 00 58 00 01 89 2f 86 53 81 67 74 7c 5f 88 44 92 23 9b 03 a1 00 33 00 33 00 33 00 33 00 33 00 32 00 30 00 2f 5c 3f 5a 55 57 5e 4d 6a 3f 73 2d 7b 17 81 02 87 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 9c a5 ae 86 92 00 8f 00 8f 06 57 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 from: DLFIC3 to: TLM a8 98 9b 40 40 40 00 88 98 8c 92 86 66 01 03 f0 fc 00 83 00 ce 83 eb ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff 3f bf be 4a 00 6a 00 25 00 58 40 01 00 52 00 00 00 4e 00 a0 0a 40 11 00 3c 0d 80 5a 00 b0 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0d 00 00 93 8a be 2e ........ Signal is clean and strong. 73, Mirek OK2AQK

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C3 heard ok at KM17VX
by Kostas Ioannidis 29 Apr '08

29 Apr '08

I heard c3 at 18:00 utc at a low east pass (10deg elevation max.) . Signal was low so packets could not be decoded. 73 de sw1ixp

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Re: [eu-amsat] Re: DELFI C-3 F SECOND PASS
by Luc Leblanc 29 Apr '08

29 Apr '08

On 28 Apr 2008 at 19:31, SV1BSX wrote: > Hi Luc, > > also very nice job this excellent TLM-copy from your side! > > Congratulations.. well done ! > > 73 de Mak, SV1BSX > > ps: can you post here the Keplerians that you have used? is it the OBJECT-A? Here is the last summary I track in the middle of the pack "Object C" but on the last noon pass i heard 3 additional carrier on 145.93 without any modulation? i don't know where they are coming from. It is near a full time job to be able to listen for about 10 sats so closed in orbit... OBJECT A 1 32783U 08021A 08119.33805163 .00165610 00000-0 23146-1 0 23 2 32783 097.9217 179.2401 0029749 230.8058 129.0516 14.76344380 27 OBJECT B 1 32784U 08021B 08119.40514136 -.00000054 00000-0 00000+0 0 11 2 32784 098.0072 179.4195 0015546 332.7115 027.3251 14.80994958 31 OBJECT C 1 32785U 08021B 08119.40517004 -.00000054 00000-0 00000+0 0 19 2 32785 098.0039 179.4530 0012580 286.0559 073.9245 14.80543386 31 OBJECT D 1 32786U 08021D 08119.40511310 -.00000054 00000-0 00000+0 0 14 2 32786 098.0112 179.4423 0012438 298.8152 061.1764 14.80937264 34 OBJECT E 1 32787U 08021E 08119.47361555 -.00000052 00000-0 00000+0 0 14 2 32787 097.9345 179.3954 0032911 220.1231 139.8515 14.76313341 40 OBJECT A 1 32794U 08022A 08119.44406574 .00000040 88710-6 00000+0 0 28 2 32794 048.8128 300.5404 7477587 359.9142 134.7509 02.07074130 16 OBJECT F 0 1 32788U 08021F 08119.53974580 .00174098 00000-0 21624-1 0 18 2 32788 097.9787 179.6173 0015896 285.5399 072.4839 14.81494237 52 OBJECT G 1 32789U 07021G 08119.60740078 -.00000054 00000-0 00000+0 0 13 2 32789 098.0082 179.6267 0015321 307.2977 051.0656 14.81417433 68 P.S. I don't know why they named 2 Object A? "-" "It is not the class of license the amateur holds, but the class of the amateur that holds the license." Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE

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Delfi-C3 Heard Well in Northern CA
by Bill Ress 29 Apr '08

29 Apr '08

The Delfi-C3 signal was heard on 145.930 on the 1646 to 1654 UTC in Northern CA using the initial keps provided by Delft which seemed very close. The antenna was just a M2 2 meter halo and signals were very readable. Signal nulls were every 30 or so seconds. Won't bother recoding data until I get the gain antenna on it after I become more comfortable with its orbit and signal characteristic. So congratulations to the U of Delft crew for a job well done. I'm especially keen to see how the satellite performs without the use of batteries. Regards...Bill - N6GHz

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DELFI C3 data analysis
by Luc Leblanc 29 Apr '08

29 Apr '08

Here is some data from the (1)60 deg and (2) 8 deg morning pass 1- 968 packet decoded 2- 950 packet decoded (a very low pass s5 to S6 signal) Data has been received on 145.930 Mhz science frq (antenna SWR 1:1) all solar panels and antennas deployed "-" Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE

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SEEDS and Other CubeSat TLE
by Matt Bennett 29 Apr '08

29 Apr '08

Hi All, I received a number of requests for SEEDS TLE this morning. The truth is that there aren't any specific elements for SEEDS or any of the other CubeSats...yet. I used the preliminary launch vehicle elements published by UTIAS-SFL last night to track SEEDS (http://www.utias-sfl.net/NLS-4/). Since the sats did not get to far from the launch vehicle in the first hour, those elements were accurate. Now that it's been T+12 hours, those elements are likely to be inaccurate. In this case, you should use the elements on SpaceTrack under the "Search by Satellite Launch Date" (use April 28th for the date). Objects A-G should correspond to the CubeSats launched. Now it's a game to figure out which Object ID belongs to which satellite! The last I heard from other stations was that *Object B* worked well for SEEDS, but you should try switching objects and finding out which one is SEEDS for yourself. As time goes by, you'll see suggestions on the BB as to which TLE works for which spacecraft. Eventually you'll start seeing their common names appearing on the SpaceTrack site as well. Hope that answers your questions. BTW, can any AMSAT member tell what the rules are for reposting TLE? I thought that it was prohibited unless you had special permission, so I have omitted the latest elements from my post until I find out for sure... Thanks all. I know the students and developers REALLY appreciate your help and the telemetry you're capturing! It's certainly been fun and rewarding for me. Good luck on your upcoming passes. 73, Matt KF6RTB ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ

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Need manual for Yaesu GS-232
by Ronald G. Parsons 29 Apr '08

29 Apr '08

I need the manual for my Yaesu GS-232 Computer Controller for the Yaesu G-5400B rotators. Note: this is NOT the 232A or 232B which are newer products. This is a unit I purchased in 1993. Yaesu Parts has no info in the unit. The circuit board has the part number CS-232. There is a DB-25, two 5-pin headers and a power connector on the rear, and two pots (AZ and EL) near the left-rear of the circuit board. A pdf file of the manual would be ideal, but a copy would be fine. Please respond directly to my email w5rkn(a)amsat.org Ron W5RKN

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Delfi-C3 HEARD, strong signal over the Delfi-C3 groundstation 1148UTC 145.930MHz
by Wouter Jan Ubbels 28 Apr '08

28 Apr '08

All, we have heard Delfi-C3 during the 1148UTC pass over the TU Delft groundstation, she was on the backup freq of 145.930MHz, with a really strong signal!!! The spacecraft is in science mode, everything has deployed nominally. We got quite some decoded frames which indicate that the spacecraft is in good health. We are currently investigating the telemetry in order to determine the status into more detail. It was incredible to finally hear the faint signals out of the noise, rising to comfortable strength! Reports from accross the globe are welcome, and we have already got quite some hams receiving and uploading good telemetry!!! We were using our old TLE's from the mission ops page, which seemed to fit best, so it's probably best to keep using those for now. 73 on behalf of an even more excited Delfi-C3 team Wouter Jan Ubbels PE4WJ

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