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

COMPASS 2155UTC
by Mike Rupprecht 30 Apr '08

30 Apr '08

April 30, 2155UTC 00 COMPASS B3140100A41300210100B307FF 73, Mike DK3WN

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Fresh Delfi-C3 Kepler & Nova!!!
by Cor 30 Apr '08

30 Apr '08

Hello All,In a previos posting W8GUS mentioned he could not findDelfi-C3 in celestrak keps.That is correct I also could not find it after update.In the beginning (after DelfiC3 launch) I took the keps from the Delfi-C3 websiteand putted in an text file, and loaded manualy in my trackings software butThese where not accurate anymore.Earlier this evening I have spoken PE4WJ (DelfiC3 team) and he sended mefresh keps which was accurate (i checked AOS and previous pass.Put these two lines in a word txt file:Delfi-C31 32787U 08021E 08121.22875607 .00000324 00000-0 48264-4 0 1312 32787 97.9932 181.2525 0014422 294.5581 65.4118 14.81396579 300 Loading manualy in Nova:Go to the Nova menu: Kep. Elements---->Disk file update--->Manual update fromfile----> Press on the big UPDATE button (with satellite image!).Now scroll to the .txt file.Find Delfi-C3 in nova:Go to the Nova menu: Configure current view---> Satellites.See the little window left (below).Click on Artificial satellites.Now search Delfi-C3 on the left window (up).Drag Delfi-C3 to the right window and press on the OK button.Tip!!!! print this mail on a paper!73's Cor PD0RKCHam Radio In Space: http://iss.ontwikkel.nl

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COMPASS telemetry
by Mike Rupprecht 30 Apr '08

30 Apr '08

Apr 30, 2018 UTC compass 63140100a41300210100b20702 good signal strength but bad modulation (sounds like low batteries) 73, Mike DK3WN

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DelfiC3, Cute and Compass-1 20:12UTC pass
by Rob Hardenberg PE1ITR 30 Apr '08

30 Apr '08

Report good signals on: Delfic3 145.930, Cute 437.275 and Compass-1 437.275MHz (little higher freq than cute). 20080430 20:12 ~ 20:24 pass I made some nice recordings of cute and compass. After analyzing the files I pass the telemetry to ground stations. 73 Rob PE1ITR http://www.pe1itr.com

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Dish Controller Project Solicitation?
by Robert Bruninga 30 Apr '08

30 Apr '08

We are looking for someone to design a microcontroller for our Naval Academy 40 foot dish. The controller will be a small rack mount box with serial input port suitible for taking AZ/EL commands from any of the popular Tracking Programs. The output is an analog voltage from +/- 10 volts to drive the 75 HP hydraulic system as a closed loop PID controller. There are a few other discrete TTL signals involved to get the hydraulics running and to handshake with the various interlocks. The device will have front panel LCD readouts and buttons. See the web page where I am assembling ideas: http://www.ew.usna.edu/~bruninga/12m-dish.html There will be two such boxes. One at the dish and the other almost a mile away at the control station. One is the controller and the other is just a remote display. They are connected by a serial port operating at 9600 baud with the remote one also connected to whatever tracking program is controlling... This dish is an X/Y dish and not AZ/EL (X goes East and West, and Y goes North and South), but a few trig conversions can easily manipulate between the two. The optical shaft encoders are 16 bit+ and operate at 9600 baud serial also but at RS422 levels. We have been using the one I built 10 years ago that I programmed in Qbasic and runs on a PC104 bus DOS card. All of the TTL level interfaces are there... But I just don't have the time or patience any more to do this again... So we are going to contract it out. This will be a full blown Government procurement with all the overhead and other baggage. So only serious respondents should consider this. We have not yet written a formal spec, or procurment package. But this is just a heads up that we will be putting this together soon, since this must be completed this summer. Nothing in this email or web page in any way obligates the government to proceed with this project. It is just a way of getting out the word that we are looking for a solution to replacing our aging controller. Bob Bruninga US Naval Academy Satellite Lab

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CubeSats TLE number
by Mineo Wakita 30 Apr '08

30 Apr '08

Decision by Spase-Track and Using by each satellites GS: 32783 OBJECT A = CANTROSAT-2A 32784 OBJECT B = ? 32785 OBJECT C = ? 32786 OBJECT D = ? 32787 OBJECT E = DELFI-C3 32788 OBJECT F = ? 32789 OBJECT G = SEEDS 32790 OBJECT H = ? 32791 OBJECT J = CUTE-1.7+APDII 32792 OBJECT K = RUBIN 8/PSLV

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Re: Cute1 telemetry
by Henk, PA3GUO 30 Apr '08

30 Apr '08

Hi Alan, Here's the link to the project team for reports. I have submitted my report today, but haven't heared back from them yet (unfortunately). Hope it was useful. http://lss.mes.titech.ac.jp/ssp/cute1.7/ireceived_e.html Henk http://www.qsl.net/pa3guo ------------------------------------------------- I copied some CW from Cute 1 but it was not obvious where to send it so I will post it here. Hope that helps Alan ZL2BX

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Re: Cute-1.7+APDII over West Malaysia
by Henk, PA3GUO 30 Apr '08

30 Apr '08

Hi Sion, You have a much better (audio) signal as I get here in Europe: http://home.vianetworks.nl/users/hamoen/pa3guo/cute_17_pa3guo_30apr08_0920u… http://home.vianetworks.nl/users/hamoen/pa3guo/cute_17_pa3guo_29apr08_1820u… It sounds very, well, wobbely ? (new word, just invented by me :-)) You recording is much more normal. I used std CW mode, what did you use ? The other satellite is most likely COMPASS, which is on the same frequency. I hear it during the same pass few Khz lower, but that can be due to doppler differences. COMPASS has here 'normal' CW sounding. I did submit this report also to the Cute 1.7 team, but havent heared back from them yet. Henk, PA3GUO http://www.qsl.net/pa3guo -------------------------------------------------------------- Dear All, Here is an MP3 recording of Cute-1.7+APDII over West Malaysia. Satellite was tracked using Object - J and maximum elevation was 10 degree. Time was 2132 Local or 1332 UTC. The MP3 recording is unedited as I am copying this remotely via VNC/Teamspeak. I think I heard another satellite transmitting towards the end of the pass on top of Cute-1.7 + APDII. Sion Chow Q. C., 9W2QC.

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Re: Delfi Question
by John Marranca, Jr 30 Apr '08

30 Apr '08

Rod: Go to C:\Program Files\Orbitron\tle\amateur.txt and add these TLE's: DELFI-C3 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 Restart Orbitron. Delfi-C3 will appear in your satellite list. Good Luck! 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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Re: Cute-1.7+APDII over West Malaysia
by Sion Chow Q. C. (9W2QC) 30 Apr '08

30 Apr '08

Dear All, Here is another recording during the 2307 Local or 1507 UTC pass, 30 degree elevation. Using Object-J again, and MP3 recording is again unedited as I was out of the shack operating remotely. Sorry for not posting this earlier, but I had Internet problems, which thankfully happened about 5 minutes after LOS. http://www.9w2qc.net/amsatbb/cute30apr2307.mp3 73, Sion Chow Q. C., 9W2QC. From: Sion Chow Q. C. (9W2QC) [mailto:[email protected]] Sent: Wednesday, April 30, 2008 10:22 PM To: 'amsat-bb(a)amsat.org' Cc: 'hiroki(a)lss.mes.titech.ac.jp'; 'Sangat Singh' Subject: Cute-1.7+APDII over West Malaysia Dear All, Here is an MP3 recording of Cute-1.7+APDII over West Malaysia. Satellite was tracked using Object - J and maximum elevation was 10 degree. Time was 2132 Local or 1332 UTC. http://www.9w2qc.net/amsatbb/cute30apr0932.mp3 The MP3 recording is unedited as I am copying this remotely via VNC/Teamspeak. I think I heard another satellite transmitting towards the end of the pass on top of Cute-1.7 + APDII. 73, Sion Chow Q. C., 9W2QC.

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