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AMSAT064.TXT
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1994-03-10
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SB SAT @ AMSAT $ANS-064.01
UOSAT-2 TURNS 10 YEARS OLD
HR AMSAT NEWS SERVICE BULLETIN 064.01 FROM AMSAT HQ
SILVER SPRING, MD MARCH 6, 1994
TO ALL RADIO AMATEURS BT
BID: $ANS-064.01
UOSAT-2 (UO-11) Celebrates 10 Years Of On-Orbit Service
At 17:59 UTC on March 1st, 1984, the second satellite designed and built
by the University of Surrey, UoSAT-2 (UO-11) was launched on a Delta
rocket from the Western Test Range at Vandenberg Air Force Base,
California.
Among its many experiments, UoSAT-2 carried the Digital Communications
Experiment, which was one of the first (if not THE first!) non-military
use of store-and-forward techniques with Low Earth Orbiting satellites.
UoSAT-2 was an early test-bed for many of the technologies that have
since been incorporated into a number of other packet radio satellites.
For all those who wonder how long these satellites last, it should be
noted that UoSAT-2 is still operational, ten years after launch!
Happy Birthday UoSAT-2 !!!
[The AMSAT News Service (ANS) would like to thank Eric Rosenberg (WD3Q)
for the information contained in this bulletin item. Eric can be
contacted at his INTERNET address of ericr@vita.org]
/EX
SB SAT @ AMSAT $ANS-064.02
SAMPLE RS-15 KEPS
HR AMSAT NEWS SERVICE BULLETIN 064.02 FROM AMSAT HQ
SILVER SPRING, MD MARCH 6, 1994
TO ALL RADIO AMATEURS BT
BID: $ANS-064.02
KE3HP Presents A "Sample" Keplerian Element Set For RS-15
Based on information about RS-15's orbital paramaeters in last week's ANS
bulletins, KE3HP has generated a set of predicted elements for this satel-
lite. KE3HP assumed that the launch would be from Plesetsk at 12:00 UTC on
01-MAY-94. He generated these elements using OrbiTrack, an excellent
MacIntosh shareware program by Bill Bard.
Satellite RS-15 predicted
Catalog Number 99999
Epoch 94 121.57362967 05/01/94 13:46:02 UTC
Drag2 0.00000000 Rev/Day^2
Inclination 67.0000 Deg
RAAN 22.8163 Deg
Eccentricity 0.0001152
Argument of Perigee 360.0000 Deg
Mean Anomaly 0.0000 Deg
Mean Motion 10.73887722 Rev/Day
Epoch Revolution 0
Semimajor Axis 8678.14 km
Precession 1.3232 Deg West/Day
Period 134.09 Min
Apogee 2301.00 KM 1429.77 SM 1242.44 NM
Perigee 2299.00 KM 1428.53 SM 1241.36 NM
The only element strongly influenced by the launch date and time will be
RAAN. The primary difference is that these predicted elements will show
the satellite passing over your QTH at a different time than when the real
bird will. If you take these elements and "plug" them into your satellite
tracking programs, one of the facinating features that you will discover
about this orbit is that even on a low elevation pass (10 degs or less)
RS-15 is visable for up to 20 minutes! This will make RS-15 an excellent
satellite for Mode A operations. Please stay tuned to the AMSAT News
Service (ANS) bulletins for further information about the launch of RS-15.
[The AMSAT News Service (ANS) would like to thank KE3HP for the
information contained in this bulletin item.]
/EX
SB SAT @ AMSAT $ANS-064.03
AO-13 OPERATIONS NET SCHEDS
HR AMSAT NEWS SERVICE BULLETIN 064.03 FROM AMSAT HQ
SILVER SPRING, MD MARCH 6, 1994
TO ALL RADIO AMATEURS BT
BID: $ANS-064.03
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
13-Mar-94 0130 B 075 VE2LVC W9ODI
19-Mar-94 1730 B 073 W5IU WA5ZIB
26-Mar-94 2130 B 084 WA5ZIB W5IU
Any stations with information on current events would be most welcome.
Also, those interested in discussing technical issues or who have questions
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.
AO-13 ZRO Tests For March 1994
The following schedule of Mode "B" tests were chosen for convenient
operating times and favorable squint angles. The tests can be heard on
145.840 MHz. Andy McAlister (WA5ZIB) will conduct all the tests. Mode
"JL" tests will no longer occur due to the failure of AO-13's 70CM trans-
mitter.
Day Date (UTC) Time Areas covered
Saturday Mar. 19, 1994 1930 UTC NA, SA, Europe, Africa
Saturday Mar. 26, 1994 2315 UTC NA, SA
Note that the dates and days are shown in "UTC". Any changes will be
announced as soon as possible via the AMSAT HF and AO-13 Operations
Nets.
All listener reports with date of test and numbers copied should be sent to
Andy MacAllister (WA5ZIB), AMSAT V.P. User Operations, 14714 Knights Way
Drive, Houston, TX 77083-5640. A report will be returned verifying the
level of accurate reception. An S.A.S.E. is appreciated but not required.
/EX
SB SAT @ AMSAT $ANS-064.04
WEEKLY OSCAR STATUS REPORTS
HR AMSAT NEWS SERVICE BULLETIN 064.04 FROM AMSAT HQ
SILVER SPRING, MD MARCH 6, 1994
TO ALL RADIO AMATEURS BT
BID: $ANS-064.04
Weekly OSCAR Status Reports: 06-MAR-94
AO-13: Current Transponder Operating Schedule:
L QST *** AO-13 TRANSPONDER SCHEDULE *** 1994 Jan 31-Apr 04
Mode-B : MA 0 to MA 90 |
Mode-BS : MA 90 to MA 120 |
Mode-S : MA 120 to MA 145 |<- S transponder; B trsp. is OFF
Mode-S : MA 145 to MA 150 |<- S beacon only
Mode-BS : MA 150 to MA 180 | Blon/Blat 180/0
Mode-B : MA 180 to MA 256 |
Omnis : MA 230 to MA 30 | Move to attitude 240/0, Apr 04
[G3RUH/DB2OS/VK5AGR]
FO-20: The following is the current schedule for transponder operations:
ANALOG MODE:
09-MAR-94 7:05 -TO- 16-MAR-94 7:30 UTC
23-MAR-94 7:52 -TO- 30-MAR-94 8:15 UTC
DIGITAL MODE: Unless otherwise noted above.
[Kazu Sakamoto (JJ1WTK) qga02014@niftyserve.or.jp]
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