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1994-11-13
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Date: Wed, 4 May 94 04:30:25 PDT
From: Ham-Space Mailing List and Newsgroup <ham-space@ucsd.edu>
Errors-To: Ham-Space-Errors@UCSD.Edu
Reply-To: Ham-Space@UCSD.Edu
Precedence: Bulk
Subject: Ham-Space Digest V94 #113
To: Ham-Space
Ham-Space Digest Wed, 4 May 94 Volume 94 : Issue 113
Today's Topics:
* SpaceNews 02-May-94 *
ANS-120 BULLETINS
Russian space station MIR
SatTrack
Two-Line Orbital Element Set Format
Send Replies or notes for publication to: <Ham-Space@UCSD.Edu>
Send subscription requests to: <Ham-Space-REQUEST@UCSD.Edu>
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, 2 May 1994 12:09:56 MDT
From: ihnp4.ucsd.edu!library.ucla.edu!psgrain!nntp.cs.ubc.ca!alberta!ve6mgs!usenet@network.ucsd.edu
Subject: * SpaceNews 02-May-94 *
To: ham-space@ucsd.edu
SB NEWS @ AMSAT $SPC0502
* SpaceNews 02-May-94 *
BID: $SPC0502
=========
SpaceNews
=========
MONDAY MAY 2, 1994
SpaceNews originates at KD2BD in Wall Township, New Jersey, USA. It is
published every week and is made available for unlimited distribution.
* AO-27 OPERATING NOTES *
=========================
AO-27 has had its FM transponder in operation on the weekends when the
spacecraft is in sunlight. The transponder on AO-27 receives on an uplink
frequency of 145.850 MHz FM, and downlinks on 436.800 MHz FM. As of yet,
no official operating schedule has been announced, but that hasn't stopped
amateur experimenters from communicating with others through the satellite.
As an example, John, N8QGC, has been working stations on AO-27 all the way
from his Detroit area QTH to as far away as Mexico City, Mexico, Baffin
Island, and the North West Territories. N8QGC usually works AO-27 from a
mobile station using 10 watts of transmitter power from his Kenwood TM-731A
and a homebrew 1/4 wave antenna. Even with his low power and small antenna
system, John has no problem securing a strong signal into the satellite.
He has even tried accessing the satellite with his ICOM IC-U2AT running
2.5 watts and a rubber duck antenna and also had a good uplink signal
(especially during periods when larger stations were not clobbering the
satellite uplink with excessively strong signals). Due to the extreme
sensitivity of this satellite, uplink ERP should be kept below 25 watts.
AO-27 control station Mark, N4TPY, has reported that the satellite has a
transponder output power of between 2 and 3 watts at the present time, and
as such, is nearly impossible to receive on a HT with a rubber duck.
Omni-directional antennas have provided only limited results.
N8QGC uses a 6 element KLM 440-6X yagi rated at 8.9 dB gain to copy AO-27's
downlink signals. He aims it out his car window and receives the satellite
well. The doppler shift experienced when communicating through this
satellite can be quite high. John usually starts listening for AO-27 at
436.805 MHz, and tracks it down to 436.790 MHz at LOS.
Santoyo V. Ramon, XE1KK, of Mexico City has reported hearing Spanish
speaking stations through AO-27 with very strong signals. They are not
hams, nor are they hearing the satellite downlink. He believes they are
located in the Caribbean zone, probably Cuba or Puerto Rico, and have been
heard talking about union elections. He is actively tracking down the
source of these signals.
[Info via N8QGC, XE1KK, and ANS]
* KEPLERIAN DATA AVAILABLE *
============================
Up-to-date Keplerian data in the NASA 2-line format is available via the
Internet at archive.afit.af.mil (129.92.1.66) using anonymous ftp. Files
such as amateur.tle, glonass.tle, gorizont.tle, gps-ops.tle, gps.tle,
tvro.tle, visual.tle, and weather.tle are located in the /pub/space
subdirectory at this site.
* OSCAR-11 NEWS *
=================
The Digitalker has been activated on the UoSAT-OSCAR-11 satellite. UO-11
has an FM downlink on 145.826 MHz, and the voice messages are interspersed
with telemetry and news bulletins sent at 1200 bps using AFSK modulation.
* MIR NEWS *
============
James, G1HJH, of Shoreham by Sea, West Sussex, England provides the
following listing of messages contained on the Mir Personal Message System
on 18-Apr-94:
Msg # Stat Date Time To From @ BS Subject
2273 PR 04/17/94 10:34 ALL N6JLH MIR Keps 4-14 UTC
2272 P 04/16/94 11:33 R0MIR N7YRV Hi
2271 P 04/16/94 11:31 W6KZW WD6GYU Hello de Manton!
2270 P 04/16/94 10:59 VK3CFI VK3ZGL hello maggie
2269 P 04/16/94 09:58 N7QME N7TTQ hi hhere
2268 PR 04/16/94 09:57 R0MIR N7TTQ greetings from Tigard, OR
2267 P 04/15/94 23:05 R0MIR F1OKN ** DOBRI VIETCHERE **
2266 PR 04/15/94 14:18 R0MIR KB2MVN School Greetings
2265 P 04/15/94 14:10 R0MIR KD6CLO QSL CARD
2264 PR 04/15/94 12:44 ALL KB2MVN CALLING CQ.....
2265 P 04/18/94 01:05 R0MIR G1HJH HOPE ALL IS FINE
5449 Bytes free
Next message Number 2274
* OSCAR-13 SCHEDULE *
=====================
The following is the latest AO-13 operating schedule:
M QST *** AO-13 TRANSPONDER SCHEDULE *** 1994 Apr 07-Jul 11
Mode-B : MA 0 to MA 170 |
Mode-BS : MA 170 to MA 218 |
Mode-S : MA 218 to MA 220 |<- S beacon only
Mode-S : MA 220 to MA 230 |<- S transponder; B trsp. is OFF
Mode-BS : MA 230 to MA 250 | Blon/Blat 230/-5
Mode-B : MA 250 to MA 256 |
Omnis : MA 250 to MA 120 | Move to attitude 180/0, Jul 11
[Info via G3RUH]
* FO-20 SCHEDULE *
==================
The Fuji-OSCAR-20 satellite will be operating in Mode JA between 11-May-94
at 06:54 UTC through 18-May-94 at 07:20 UTC. The packet mailbox is active
at other times.
[Info via Kazu Sakamoto, JJ1WTK]
* FEEDBACK/INPUT WELCOMED *
===========================
Mail to SpaceNews should be directed to the editor (John, KD2BD) via any
of the following paths:
FAX : 1-908-747-7107
PACKET : KD2BD @ N2KZH.NJ.USA.NA
INTERNET : kd2bd@amsat.org
MAIL : John A. Magliacane, KD2BD
Department of Engineering and Technology
Advanced Technology Center
Brookdale Community College
Lincroft, New Jersey 07738
U.S.A.
<<=- SpaceNews: The first amateur newsletter read in space! -=>>
/EX
--
John A. Magliacane, KD2BD * /\/\ * Voice : 1-908-224-2948
Advanced Technology Center |/\/\/\| Packet : KD2BD @ N2KZH.NJ.USA.NA
Brookdale Community College |\/\/\/| Internet: kd2bd@ka2qhd.ocpt.ccur.com
Lincroft, NJ 07738 * \/\/ * Morse : -.- -.. ..--- -... -..
------------------------------
Date: Mon, 2 May 1994 17:06:48 MDT
From: ihnp4.ucsd.edu!library.ucla.edu!psgrain!nntp.cs.ubc.ca!alberta!ve6mgs!usenet@network.ucsd.edu
Subject: ANS-120 BULLETINS
To: ham-space@ucsd.edu
SB SAT @ AMSAT $ANS-120.01
AO-13 OPS NET SCHEDULE
HR AMSAT NEWS SERVICE BULLETIN 120.03 FROM AMSAT HQ
SILVER SPRING, MD APRIL 30, 1994
TO ALL RADIO AMATEURS BT
BID: $ANS-120.01
Current AMSAT Operations Net Schedule For AO-13
AMSAT Operations Nets are planned for the following times. Mode-B Nets
are conducted on AO-13 on a downlink frequency of 145.950 MHz. If, at
the start of the OPS Net, the frequency of 145.950 MHz is being used
for a QSO, OPS Net enthusiasts are asked to move to the alternate
frequency of 145.955 MHz.
Date UTC Mode Phs NCS Alt NCS
09-May-94 0000 B 175 W5IU WA5ZIB
14-May-94 1700 B 167 WA5ZIB W5IU
21-May-94 2130 B 185 VE2LVC W9ODI
Any stations with information on current events would be most welcomed.
Also, those interested in discussing technical issues or who have quest-
ions about any particular aspect of OSCAR statellite operations, are
encouraged to join the OPS Nets. If neither of the Net Control Stations
show up, any participant is invited to act as the NCS.
Slow Scanners are invited to join the SSTV sessions on AO-13. The freq-
uency is 145.955 MHz. The net meets at 45 minutes before Mode S, and on
Mode B following Mode S on Saturdays and Sundays. Join those sessions or
convey your wishes for other SSTV skeds to wb6llo@amsat.org, and he will
coordinate your efforts.
/EX
SB SAT @ AMSAT $ANS-120.02
WEEKLY OSCAR STATUS REPORTS
HR AMSAT NEWS SERVICE BULLETIN 120.04 FROM AMSAT HQ
SILVER SPRING, MD APRIL 30, 1994
TO ALL RADIO AMATEURS BT
BID: $ANS-120.02
Weekly OSCAR Status Reports: 30-APR-94
AO-13: Current Transponder Operating Schedule:
M QST *** AO-13 TRANSPONDER SCHEDULE *** 1994 Apr 07-Jul 11
Mode-B : MA 0 to MA 170 |
Mode-BS : MA 170 to MA 218 |
Mode-S : MA 218 to MA 220 |<- S beacon only
Mode-S : MA 220 to MA 230 |<- S transponder; B trsp. is OFF
Mode-BS : MA 230 to MA 250 | Blon/Blat 230/-5
Mode-B : MA 250 to MA 256 |
Omnis : MA 250 to MA 120 | Move to attitude 180/0, Jul 11
[G3RUH/DB2OS/VK5AGR]
FO-20: The following is the current schedule for transponder operations:
ANALOG MODE:
11-May-94 6:54 -to- 18-May-94 7:20 UTC
Digital mode: Unless otherwise noted above.
[Kazu Sakamoto (JJ1WTK) qga02014@niftyserve.or.jp]
KO-25: N7RYW has noticed that KO-25 started to become very difficult for
him to uplink to. This began for him over a week ago. At first, he
attributed the difficulty to the nearness of AO-21. This week he noticed
that AO-21 was far out of sight of KO-25, and yet the trouble remained.
N7RYW does not belive that his keps for AO-21 are off and thus he feels
there might be something bothering KO-25's receiver. He is wondering if
the receiver was switched to the secondary frequency. If so, it may be
hard to find, as it was when KO-25 was first activated. In that instance,
it was found to be off from its published frequency. N7RWY will be testing
various uplinks over the next few days to see if he can find where its
secondary uplink frequency is located. If there any other KO-25 users have
had problems, please send N7RYW a note at his INTERNET address of
n7ryw@teleport.com. In a further status report received from WH6I, he also
notes that KO-25 has been deaf with many stations thinking that AO-21 was
the cause of the desensing of KO-25's reciever. However, analysis of the
telemetry and many "re-tries" by some stations with a lot of power seems to
indicate that desense is not the problem. In fact KO-25 has been deaf even
when AO-21 is not near it. At the moment it seems that there might be a
software problem, or perhaps the receiver is on a different (unknown)
frequency. [N7RYW & WH6I]
AO-16: Working well. [WH6I]
LO-19: Operating normally. [WH6I]
KO-23: Operating Normally. [WH6I]
RS-10/11: Operating normally with very strong signals. [ZS6AOP]
MIR: N0XCZ reports that MIR's Personal Bulletin Board System (PBBS) is
quite active but it appears to be running with low power. Stations can be
heard but with weak signals. The MIR PBBS can be heard and worked on a
frequency of 145.550 MHz, FM, simplex. [N0XCZ]
The AMSAT NEWS Service (ANS) is looking for volunteers to contribute weekly
OSCAR status reports. If you have a favorite OSCAR which you work on a
regular basis and would like to contribute to this bulletin, please send
your observations to WD0HHU at his CompuServe address of 70524,2272, on
INTERNET at wd0hhu@amsat.org, or to his local packet BBS in the Denver, CO
area, WD0HHU @ W0LJF.#NECO.CO.USA.NOAM. Also, if you find that the current
set of orbital elements are not generating the correct AOS/LOS times at
your QTH, PLEASE INCLUDE THAT INFORMATION AS WELL. The information you
provide will be of value to all OSCAR enthusiasts.
/EX
------------------------------
Date: 3 May 1994 16:05:57 -0400
From: ihnp4.ucsd.edu!swrinde!cs.utexas.edu!howland.reston.ans.net!news.cac.psu.edu!news.pop.psu.edu!psuvax1!news.cc.swarthmore.edu!netnews.upenn.edu!news.amherst.edu!not-for-mail@network.ucsd.
Subject: Russian space station MIR
To: ham-space@ucsd.edu
Can anyone tell me what MIR's uplink and downlink frequencies are, how often
they are likely to transmit, and whether there are any hams aboard at this
time?
Thanks.
-Jared Hertzberg N2YES
jbhertzb@amhux3.amherst.edu
------------------------------
Date: 3 May 1994 16:27:03 -0400
From: ihnp4.ucsd.edu!usc!howland.reston.ans.net!news.ans.net!hp81.prod.aol.net!search01.news.aol.com!not-for-mail@network.ucsd.edu
Subject: SatTrack
To: ham-space@ucsd.edu
In article <1994Apr4.203441.4071@news.vanderbilt.edu>,
HEAGYWS@ctrvax.Vanderbilt.Edu () writes:
Win - I have the phone number for some BBS's that carry up to date Keplerian
elements - where are you located?
------------------------------
Date: Mon, 2 May 1994 18:51:35 MDT
From: ihnp4.ucsd.edu!library.ucla.edu!psgrain!nntp.cs.ubc.ca!alberta!ve6mgs!usenet@network.ucsd.edu
Subject: Two-Line Orbital Element Set Format
To: ham-space@ucsd.edu
As a service to the satellite user community, the following description of the
NORAD two-line orbital element set format is uploaded to sci.space.news and
rec.radio.info on a monthly basis. The most current orbital elements
from the NORAD two-line element sets are carried on the Celestial BBS, (513)
*253-9767*, and are updated daily (when possible). Documentation and tracking
software are also available on this system. The Celestial BBS may be accessed
24 hours/day at 300, 1200, 2400, 4800, or 9600 bps using 8 data bits, 1 stop
bit, no parity. In addition, element sets (also updated daily) and some
documentation and software are also available via anonymous ftp from
archive.afit.af.mil (129.92.1.66) in the directory pub/space.
==============================================================================
Data for each satellite consists of three lines in the following format:
AAAAAAAAAAA
1 NNNNNU NNNNNAAA NNNNN.NNNNNNNN +.NNNNNNNN +NNNNN-N +NNNNN-N N NNNNN
2 NNNNN NNN.NNNN NNN.NNNN NNNNNNN NNN.NNNN NNN.NNNN NN.NNNNNNNNNNNNNN
Line 0 is a eleven-character name.
Lines 1 and 2 are the standard Two-Line Orbital Element Set Format identical
to that used by NORAD and NASA. The format description is:
Line 1
Column Description
01-01 Line Number of Element Data
03-07 Satellite Number
10-11 International Designator (Last two digits of launch year)
12-14 International Designator (Launch number of the year)
15-17 International Designator (Piece of launch)
19-20 Epoch Year (Last two digits of year)
21-32 Epoch (Julian Day and fractional portion of the day)
34-43 First Time Derivative of the Mean Motion
or Ballistic Coefficient (Depending on ephemeris type)
45-52 Second Time Derivative of Mean Motion (decimal point assumed;
blank if N/A)
54-61 BSTAR drag term if GP4 general perturbation theory was used.
Otherwise, radiation pressure coefficient. (Decimal point assumed)
63-63 Ephemeris type
65-68 Element number
69-69 Check Sum (Modulo 10)
(Letters, blanks, periods, plus signs = 0; minus signs = 1)
Line 2
Column Description
01-01 Line Number of Element Data
03-07 Satellite Number
09-16 Inclination [Degrees]
18-25 Right Ascension of the Ascending Node [Degrees]
27-33 Eccentricity (decimal point assumed)
35-42 Argument of Perigee [Degrees]
44-51 Mean Anomaly [Degrees]
53-63 Mean Motion [Revs per day]
64-68 Revolution number at epoch [Revs]
69-69 Check Sum (Modulo 10)
All other columns are blank or fixed.
Example:
NOAA 6
1 11416U 86 50.28438588 0.00000140 67960-4 0 5293
2 11416 98.5105 69.3305 0012788 63.2828 296.9658 14.24899292346978
--
Dr TS Kelso Assistant Professor of Space Operations
tkelso@afit.af.mil Air Force Institute of Technology
------------------------------
End of Ham-Space Digest V94 #113
******************************