Date: Tue, 5 Apr 94 04:30:28 PDT
From: Ham-Space Mailing List and Newsgroup <ham-space@ucsd.edu>
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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
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----------------------------------------------------------------------
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> ? 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
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