Date: Tue, 5 Apr 94 04:30:28 PDT From: Ham-Space Mailing List and Newsgroup Errors-To: Ham-Space-Errors@UCSD.Edu Reply-To: Ham-Space@UCSD.Edu Precedence: Bulk Subject: Ham-Space Digest V94 #82 To: Ham-Space Ham-Space Digest Tue, 5 Apr 94 Volume 94 : Issue 82 Today's Topics: ARLK013 Keplerian data Az/El Rotator suggestions wanted (2 msgs) HELP: My Satellite Tracking Program Won't Work STS-59 SAREX Mission Delay Send Replies or notes for publication to: Send subscription requests to: Problems you can't solve otherwise to brian@ucsd.edu. Archives of past issues of the Ham-Space Digest are available (by FTP only) from UCSD.Edu in directory "mailarchives/ham-space". We trust that readers are intelligent enough to realize that all text herein consists of personal comments and does not represent the official policies or positions of any party. Your mileage may vary. So there. ---------------------------------------------------------------------- Date: Mon, 4 Apr 1994 16:07:45 -0600 From: ihnp4.ucsd.edu!usc!yeshua.marcam.com!zip.eecs.umich.edu!newsxfer.itd.umich.edu!nntp.cs.ubc.ca!alberta!ve6mgs!usenet@network.ucsd.edu Subject: ARLK013 Keplerian data To: ham-space@ucsd.edu SB KEP @ ARL $ARLK013 ARLK013 Keplerian data ZCZC SK80 QST de W1AW Keplerian Bulletin 13 ARLK013 ------------------------------ Date: 4 Apr 1994 17:22:11 -0500 From: ihnp4.ucsd.edu!swrinde!gatech!howland.reston.ans.net!torn!nott!bnrgate!corpgate!crchh327.bnr.ca!debaker@network.ucsd.edu Subject: Az/El Rotator suggestions wanted To: ham-space@ucsd.edu Hello, I am looking for suggestions on homebrewed or inexpensive az/el combos. I have looked at the kilobuck stuff from Yeasu and similiar makers, but am wondering if there are any kits or ideas for cheaper construction. I have read just about every satellite publication, so I have already seen a lot. I am trying to identify any designs that use inexpensive rotators (like the R/S TV rotator), and gear them down and perhaps modify them for greater than 360 degree rotation in order to get better weight loading and granularity in adjustment. If anyone knows of any ideas or plans (or knows about the R/S rotator), please let me know. Thanks, +--------------------------------------------------------------------+ | David E. Baker Internet: debaker@bnr.ca (Richardson, TX, USA) | | Callsign: AB5PI Amateur Packet: AB5PI@N5AUX.#DFW.TX.USA.NA | | My opinions do not necessarily reflect the opinions of my employer | +--------------------------------------------------------------------+ ------------------------------ Date: 4 Apr 1994 19:28 CDT From: ihnp4.ucsd.edu!galaxy.ucr.edu!library.ucla.edu!europa.eng.gtefsd.com!howland.reston.ans.net!cs.utexas.edu!bcm!news.tamu.edu!zeus.tamu.edu!tskloss@network.ucsd.edu Subject: Az/El Rotator suggestions wanted To: ham-space@ucsd.edu In article <2nq3uj$4rf@crchh7b0.bnr.ca>, debaker@bnr.ca (David Baker) writes... >If anyone knows of any ideas or plans (or knows about the R/S rotator), >please let me know. I've been thinking of a low cost oscar rotator assembly myself. I have found a rotator sold at Wal-Mart that is a copy of a ham-type rotator. It is designed for light duty (like the RS one) and costs $60 new. It features over the RS model a pass-thru mast design so it can be used vertically or horizontally! The gears are metal and the rotator controller is silent, as opposed to the grinder noises that eminate from the RS controller. Two of them make a good combination, and as soon as I get all-mode receivers... -tim KC5DNA ------------------------------ Date: 3 Apr 1994 12:54:03 -0700 From: ihnp4.ucsd.edu!swrinde!sgiblab!barrnet.net!nntp.crl.com!not-for-mail@network.ucsd.edu Subject: HELP: My Satellite Tracking Program Won't Work To: ham-space@ucsd.edu Hello, I downloaded the program sattrack for my UNIX box at home and compiled it under linux. Everything went okay until I tried the program. The program kept on telling me that the satellites have "crashed already". I tried AO-21, Mir and Oscar 13, they all gave me the same result, and I know, for a fact, that the satellites have not been crashed :-). Please help me, thanks in advance. 73 de KE6BCU, Benjie -------here are the scripts I used and the results I got back--------------- Here are the lines I used for AO-21: AO-21 1 21087U 91006A 94069.83595116 .00000094 00000-0 82657-4 0 4439 2 21087 82.9370 215.4726 0036191 0.5572 359.5617 13.74535665156075 Here is the line I used for Sunnyvale CA in the sites.dat file Sunnyvale CA 37.283333 122.200000 50.0 And here is what I got from the program, running "sattrack -v" wales{benjie}41: sattrack -v SatTrack V1.0 Ground station : Sunnyvale CA Satellite : AO-21 Element set : tle Element set type : NASA Time zone : PST (-8) Duration : 5.0 d Min elevation : 48.0 deg Ground station < Sunnyvale CA> : Sunnyvale CA Ground station : Sunnyvale CA Latitude : 1.000000 deg N Longitude : 48.000000 deg W Altitude : -49.000000 m Satellite name < AO-21> : AO-21 Two-line elements < tle> : tle AO-21 1 21087U 91006A 94069.83595116 .00000094 00000-0 82657-4 0 4439 2 21087 82.9370 215.4726 0036191 0.5572 359.5617 13.74535665156075 Satellite name : AO-21 Satellite number : 21087 Element set : 443 Epoch : 94008.000000000 d 08-01-94 00:00:00.000 UTC Mean anomaly : 4.000000000 deg Arg of perigee : 0.000000000 deg RAAN : 4.000000000 deg Inclination : 3.000000000 deg Eccentricity : 0.003619100 Mean motion : 8.000000000 rev/d Decay rate : 8.000000000 rev/d^2 Orbit : 15607 Display Prediction Restart Quit ? d SatTrack KE6BCU AO-21 TRACKING MONITOR Ground Stn : Sunnyvale CA Date: __-__-__ Radio Beacon : 146.000 MHz Satellite : AO-21 Day : ___ ___ Doppler Shift: -__.___ kHz Inclination: 3.000 deg UTC : __:__:__ Path Loss : ___.___ dB Orbit : _____ ___._ % _ PST : __:__:__ Phase (0-256): ___.___ Sun Azi/Ele: ___._ -__._ deg Mode (ABJLS): __ Azimuth : ___.___ deg Latitude N : -__.___ deg Elevation : -__.___ deg Longitude W : -___.___ deg Range : _____.___ km Height : _____.___ km Range Rate: -__.___ km/s Velocity : _____.___ km/s State Vector X: -_____.___ km Y: -_____.___ km Z: -_____.___ km VX: -_____.___ km/s Y: -_____.___ km/s Z: -_____.___ km/s Next AOS : ___/__:__:__ PST AOS Azimuth : ___.___ deg _ Duration : ___/__:__:__ MEL Azimuth : ___.___ deg _ Next LOS : ___/__:__:__ PST LOS Azimuth : ___.___ deg _ Countdown : ___/__:__:__ Max Elevation: __.___ deg Satellite has crashed already! -- Benjie Chen benjie@hh.sbay.org benjie@wales.sbay.org KE6BCU@N0ARY.#NOCAL.CA.USA.NOAM KE6BCU on the air / 147.315 +.600 pl151.4 Join Internet Amateur Mathematics Society. Email listserv@hh.sbay.org with "FAQ iams" in the body of the message. ------------------------------ Date: Mon, 4 Apr 1994 19:32:05 -0600 From: ihnp4.ucsd.edu!usc!yeshua.marcam.com!zip.eecs.umich.edu!newsxfer.itd.umich.edu!nntp.cs.ubc.ca!alberta!ve6mgs!usenet@network.ucsd.edu Subject: STS-59 SAREX Mission Delay To: ham-space@ucsd.edu SB SAREX @ AMSAT $STS-59.001 STS-59 Mission Delay The STS-59 SAREX mission has been delayed 24 hrs due to some extra inspections that need to be performed at the launch site. Tentative launch will be on April 8 at 12:07 UTC. A new set of Keplerian Elements will be provided in the near future. Submitted by Frank H. Bauer, KA3HDO for the SAREX Working Group /EX ------------------------------ Date: (null) From: (null) SB KEP ARL ARLK013 ARLK013 Keplerian data Thanks to NASA, AMSAT and N3FKV for the following Keplerian data. Decode 2-line elsets with the following key: 1 AAAAAU 00 0 0 BBBBB.BBBBBBBB .CCCCCCCC 00000-0 00000-0 0 DDDZ 2 AAAAA EEE.EEEE FFF.FFFF GGGGGGG HHH.HHHH III.IIII JJ.JJJJJJJJKKKKKZ KEY: A-CATALOGNUM B-EPOCHTIME C-DECAY D-ELSETNUM E-INCLINATION F-RAAN G-ECCENTRICITY H-ARGPERIGEE I-MNANOM J-MNMOTION K-ORBITNUM Z-CHECKSUM AO-10 1 14129U 83058 B 94090.04857020 -.00000126 10000-3 0 2726 2 14129 27.1828 334.6164 6021586 166.4731 222.3171 2.05878019 53208 RS-10/11 1 18129U 87054 A 94087.86953292 0.00000048 35789-4 0 8858 2 18129 82.9247 28.2040 0010048 247.5026 112.5060 13.72333957338899 UO-11 1 14781U 84021 B 94088.54614116 0.00000310 60435-4 0 6771 2 14781 97.7907 106.9891 0011724 159.5745 200.5932 14.69179967538610 RS-12/13 1 21089U 91007 A 94087.91832396 0.00000073 62203-4 0 6753 2 21089 82.9180 70.9759 0029421 335.5442 24.4319 13.74038100157622 AO-13 1 19216U 88051 B 94089.57476926 -.00000405 10000-4 0 8978 2 19216 57.8673 260.4952 7210521 338.0957 2.2906 2.09726187 12866 UO-14 1 20437U 90005 B 94089.78002368 0.00000055 38442-4 0 9774 2 20437 98.5902 175.6151 0011994 63.2614 296.9794 14.29833748218380 AO-16 1 20439U 90005 D 94089.20880979 0.00000052 37099-4 0 7777 2 20439 98.6002 176.2024 0012329 65.1942 295.0533 14.29888159218318 DO-17 1 20440U 90005 E 94089.24080620 0.00000063 41255-4 0 7768 2 20440 98.5996 176.5305 0012438 64.3153 295.9310 14.30027317218339 WO-18 1 20441U 90005 F 94090.19431294 0.00000051 36697-4 0 7785 2 20441 98.6012 177.4806 0013046 61.5324 298.7177 14.30002526218473 LO-19 1 20442U 90005 G 94089.26815097 0.00000060 40132-4 0 7766 2 20442 98.6013 176.8020 0013338 63.8292 296.4260 14.30097329218359 FO-20 1 20480U 90013 C 94089.46791516 -.00000026 82466-5 0 6723 2 20480 99.0274 256.2045 0541263 157.7469 204.8111 12.83224806194031 AO-21 1 21087U 91006 A 94090.36347229 0.00000093 82657-4 0 4495 2 21087 82.9445 200.2890 0034231 302.9738 56.8128 13.74536481158891 UO-22 1 21575U 91050 B 94088.19621400 0.00000082 42436-4 0 4781 2 21575 98.4399 164.2896 0007602 162.2933 197.8526 14.36902851141598 KO-23 1 22077U 92052 B 94089.40023487 -.00000037 10000-3 0 3734 2 22077 66.0807 84.9415 0012132 306.9711 53.0198 12.86285590 76650 KO-25 1 22830U 93061 H 94089.19391177 0.00000061 41952-4 0 2772 2 22830 98.5601 163.8935 0012606 49.5068 310.7222 14.28043381 26423 IO-26 1 22826U 93061 D 94090.21670618 0.00000050 37923-4 0 2740 2 22826 98.6600 166.8192 0010132 76.2498 283.9812 14.27718516 26561 AO-27 1 22825U 93061 C 94090.23004933 0.00000064 43978-4 0 2744 2 22825 98.6599 166.8062 0009628 75.4070 284.8171 14.27615820 26560 PoSat 1 22829U 93061 G 94089.68812903 0.00000066 44108-4 0 2679 2 22829 98.6555 166.3095 0011064 65.4928 294.7409 14.28014942 26490 STS-59 1 99959U 94097.74947238 0.00221188 11303-3 0 76 2 99959 57.0053 276.3038 0009259 269.9963 90.0094 16.19806752 53 Mir 1 16609U 86017 A 94090.25081547 0.00008348 11343-3 0 5496 2 16609 51.6462 216.9197 0015558 91.3363 268.9434 15.58441517493803 Keplerian bulletins are transmitted twice weekly from W1AW. The next scheduled transmission of these data will be Tuesday, April 5, 1994, at 2330z on Baudot and AMTOR. NNNN /EX ------------------------------ End of Ham-Space Digest V94 #82 ******************************