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[jamsat-news:624] ANS-236 WEEKLY BULLETINS
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SB SAT @ AMSAT $ANS-236.01
P3D INTEGRATION CONTINUES
HR AMSAT NEWS SERVICE BULLETIN 236.01 FROM AMSAT HQ
SILVER SPRING, MD, AUGUST 24, 1997
TO ALL RADIO AMATEURS BT
BID: $ANS-236.01
An international team of Phase 3D project workers assembled August 18th
at the Phase 3D Integration Laboratory in Orlando, Florida, U.S.A. to
continue the final mechanical and electronic integration efforts on the
satellite. Teams from Germany, Belgium, Slovenia, Hungary, Japan and
the Czech Republic joined their American counterparts in an all-out
marathon to prepare the satellite as quickly as possible for a safe and
successful launch.
"We are happy to join our American partners in this effort" said Werner
Haas, DJ5KQ, AMSAT- DL's Vice President, who also headed the European
contingent. "The cooperation has, once again been excellent between our
two groups" he said.
Even before our overseas compatriots arrived, workers at the Orlando
Integration Lab were racing to make the needed structural modifications
to the satellite since it became known that Phase 3D would, during its
planned Ariane 502 launch, most likely encounter environmental loads
greater than those originally stated.
Keith Baker, KB1SF, AMSAT-NA Executive Vice President reports from Orlando
that these significant mechanical upgrade efforts are proceeding. "The
folks here at the Lab have been burning the midnight oil over the past
several weeks to make these structural changes on a work schedule where
16 to 18 hour work days have been the norm, rather than the exception",
Keith said. He went on the note that, "These people have done an
absolutely superb job under some extremely difficult circumstances. We
all owe them a tremendous debt of gratitude for their outstanding work."
Over the last week, these round-the-clock efforts continued with the
combined team's current activities installing and checking out a
significant number of the remaining electronic and mechanical pieces
into the satellite. Such efforts included installation and checkout of
the spacecraft's momentum wheels, the RUDAK digital experiment, the 2.4
GHz and 24 GHz transmitters as well as a number of other transmitters,
receivers and other equipment, some of which were being re-installed
after having been previously removed to facilitate the structural
modifications.
Stay tuned to ANS for further Phase 3D integration and launch
developments.
[ANS thanks Werner Haas, DJ5KQ, and Keith Baker, KB1SF, for this bulletin
Information.]
/EX
SB SAT @ AMSAT $ANS-236.02
AO-10 UPDATE
HR AMSAT NEWS SERVICE BULLETIN 236.02 FROM AMSAT HQ
SILVER SPRING, MD, AUGUST 24, 1997
TO ALL RADIO AMATEURS BT
BID: $ANS-236.02
AO-10 downlink signals continue to be strong. During portions of the
pass when the squint angle is a considerably 90 degrees, masking of the
omni antenna by the S/C's three lobes causes the deep QSB noticed. Given
Stacey E. Mills, W4SM's, previously "guesstimated" ALON/ALAT which has
now precessed to approximately ALON = 154, ALAT = +43, AO-10 should have a
solar angle of about 6 degrees, giving 99+% illumination. After August
24th, the solar angle will begin to move toward the antenna end of the
spacecraft. By November 6th, illumination should be down to about 35% and
signals should be considerably diminished. The sun will directly shine on
the antenna end of AO-10 (illumination = 0) on about November 29th and it
should be in the middle of its next "sleep" at that time.
BIG DISCLAIMER: all the above assumes that the attitude is stable which,
given past experience is a leap of faith.
UPCOMING LUNAR ECLIPSE:
AO-10 is currently in its semi-annual eclipse phase where the earth
blocks sunlight just after perigee on each pass. However on September 1st
beginning at 2020 UTC, AO-10 will have its sunlight partially blocked by the
moon when it is much farther out in its orbit (MA 195-210). The maximum
occlusion will be 52% and will occur while AO-10 is visible to most of
the US and the Pacific. From W4SM's location, unfortunately, it will be
just on the horizon. Information regarding changes in signal quality during
this time would be much appreciated. Given the good overall illumination at
this time, the effect of the eclipse may not be noticeable. However, it is
a good opportunity to get a qualitative assessment of transponder output
when there is a relatively good measurement of change in illumination.
AO-10 Solar Eclipse by the Moon / W4SM
UTC MA Dist Obsc
DATE HH:MM ONo /256 deg SLAT SLON % Type
--------------------------------------------------------------------------
1997 Sep 01 20:20 10693 195 0.477 1.0 N 154.9 W 004% PAR
1997 Sep 01 20:25 10693 197 0.387 1.5 N 155.0 W 016% PAR
1997 Sep 01 20:30 10693 199 0.300 2.1 N 155.0 W 032% PAR
1997 Sep 01 20:35 10693 201 0.231 2.7 N 155.0 W 046% PAR
1997 Sep 01 20:40 10693 203 0.205 3.4 N 155.0 W 052% PAR
1997 Sep 01 20:45 10693 204 0.238 4.0 N 154.9 W 044% PAR
1997 Sep 01 20:50 10693 206 0.314 4.7 N 154.7 W 029% PAR
1997 Sep 01 20:55 10693 208 0.412 5.4 N 154.5 W 012% PAR
1997 Sep 01 21:00 10693 210 0.518 6.1 N 154.3 W 000% PAR
AO-10 ARGUMENT OF PERIGEE
Because of AO-10 relatively low inclination, its argument of perigee
changes much more rapidly than did AO-13's. The current value is 144
degrees, placing apogee in the southern hemisphere. However, the Arg P
is increasing at about 0.28 degrees/day and apogee has been moving
northward from its southern most point when Arg P = 90 degrees. On
approximately January 1st, 1998, Arg P will be 180 degrees, meaning apogee
will cross the equator and progressively move into the northern hemisphere,
peaking when Arg P = 270 degrees on approximately December 1st, 1998. So
for all of 1998 and virtually all of 1999, the apogee of AO-10 will be in
the northern hemisphere.
More information regarding AO-10 can be found on W4SM's Web page:
http://www.cstone.net/~w4sm/AO-10.html
[ANS thanks Stacey E. Mills, W4SM, for this report.]
/EX
SB SAT @ AMSAT $ANS-236.03
SAREX/MIREX PART l
HR AMSAT NEWS SERVICE BULLETIN 236.03 FROM AMSAT HQ
SILVER SPRING, MD, AUGUST 24, 1997
TO ALL RADIO AMATEURS BT
BID: $ANS-236.03
Frank H. Bauer, KA3HDO, AMSAT V.P. for Manned Space Programs
SAREX Working Group provides ANS an update on future plans for Shuttle
Amateur Radio EXperiment (SAREX) operations and MIR International
amateur Radio EXperiment (MIREX) contacts.
At this time, SAREX is tentatively scheduled to fly on the STS-93 AXAF-1
mission which is currently scheduled for August 27, 1998. This will be
a 5 day mission at a 28.5 degree inclination. As stated, SAREX is
currently official on 1 mission next year; however at least one other is
under consideration. If one were to review the Shuttle Future Flight Web
page: http://www.osf.hq.nasa.gov/shuttle/futsts.html .
It should be obvious that the Shuttle is going to be quite busy next
year, and in the future, constructing the International Space Station.
Last year, the SAREX Working Group made a decision to not fly SAREX on
Shuttle/MIR docking flights or ISS construction flights. This decision
was made because the SAREX radio is really not used during these missions
due to the intense astronaut workload and the need to swap the SAREX antenna
for the MIR docking antenna. The big advantage to next year's Shuttle
manifest is that it lays the groundwork for a future permanent operation
of ham radio station on the International Space Station (ISS)!
Now turning to MIR. The ARRL has obtained waivers from the FCC so that
Mike Foale, David Wolf and Wendy Lawrence all have been given permission
to operate the MIR radio. This is the good news. But there are no
official MIREX/SAREX school group contacts with these astronauts planned for
MIR at this time due to the tenuous situation on MIR as a result of the
June 25 collision with the Progress. Remember, power on MIR is still at a
premium. The SAREX and MIREX teams do not plan to restart the school group
contacts with the astronauts until the MIR problems are corrected and until
the Phase 1 Office (NASA's MIR Office) clears the way for the team to
officially perform contacts with the astronauts again. In the meantime,
hams are encouraged to talk to Mike Foale when he is on the air.
Several hams have noted that Mike has been on the air recently.
Anyone wishing to apply for a School Group contact on Shuttle or MIR,
should send for an application to:
ARRL
EAD
225 Main St...
Newington, CT 06111
Please understand that there is quite a long waiting list for schools to
be selected for Shuttle or MIR contacts.
[ANS thanks Frank H. Bauer, KA3HDO,
AMSAT V.P. for Manned Space Programs
SAREX Working Group, for this item.]
/EX
SB SAT @ AMSAT $ANS-236.04
SAREX/MIREX PART ll
HR AMSAT NEWS SERVICE BULLETIN 236.04 FROM AMSAT HQ
SILVER SPRING, MD, AUGUST 24, 1997
TO ALL RADIO AMATEURS BT
BID: $ANS-236.04
Glenn Swanson, KB1GW, Educational Programs Coordinator,
ARRL Educational Activities Department, thought he'd help schools to
save a postage stamp and add to Frank H. Bauer's, KA3HDO, remarks in
SAREX/MIREX PART l. Here's how a SAREX application and an ARRL SAREX
Bulletin can be obtained, via e-mail, from the ARRL's automated
information server.
Scheduled SAREX/MIREX QSOs:
It is currently possible to apply for a school contact, via Amateur
Radio, with the Space Shuttle, via the SAREX program, or with the
Russian Space Station MIR, via the similar MIREX program.
Those wishing to request a MIR contact instead of a Shuttle contact, are
asked to put MIREX at the top of the standard SAREX school application.
Please understand that submitting a SAREX or MIREX application does not
automatically grant the particular school a contact date, nor can a
school specify a particular date or time frame for a contact. The ARRL has
quite a few applications on file for such contacts and they are currently
working with those schools that applied in late 1995.
Note: Future Shuttle missions will mainly be dedicated to bringing parts
of the International Space Station into space. Therefore, it is
anticipated that there will most likely be one SAREX mission in 1998, and
one in 1999. Details on any possible SAREX missions in those years will be
posted on the ARRL Web and via ANS bulletins as soon as they become
available.
There are two documents that may be of interest. Both are
available via the internet. To request an electronic version
of the ARRL SAREX Bulletin via e-mail and a SAREX school application
may be requested in the same way. Send an e-mail message to
info@arrl.org . Leave the "subject" line of the message blank. In the
"body" of the message, type the following:
"SEND SAREXFAQ.TXT
SEND SAREX-AP.TXT
QUIT"
Then, send the message. The ARRL's automated information server will
automatically send two documents to the return e-mail address of the
sender. The first file (sarexfaq.txt) is the ARRL SAREX Bulletin, it
contains several pages of information regarding SAREX. This bulletin
contains a list of frequently asked questions, with answers, that should
provide many of the details sought regarding the SAREX program. The second
file (sarex-ap.txt) is a SAREX school application--used to apply for a
scheduled Space Shuttle to school contact.
Also, check out the ARRL Web for more SAREX and MIR information.
ARRLWeb, Main page: http://www.arrl.org/
SAREX information: http://www.arrl.org/sarex/
"Amateur Radio Aboard MIR" file: http://www.arrl.org/sarex/mir.html
[ANS thanks Glenn Swanson, KB1GW,
Educational Programs Coordinator,
ARRL Educational Activities Department for this news.]
/EX
SB SAT @ AMSAT $ANS-236.05
WEEKLY SATELLITE REPORT PT 1
HR AMSAT NEWS SERVICE BULLETIN 236.05 FROM AMSAT HQ
SILVER SPRING, MD, AUGUST 24, 1997
TO ALL RADIO AMATEURS BT
BID: $ANS-236.05
MIR:
(Simplex 145.985 MHz, FM)
Mike Foale, KB5UAC, has been active on amateur radio
and the packet station has been heard during many of the
passes since the power cables were reconnected in the Spektr module.
According to Launchspace Newsline.
http://www.newspace.com/feature/newsline/report.html
they have successfully reconnected power cables from the damaged Spektr
module
[ANS thanks Claudio Ariotti, IK1SLD, for this report.]
SAFEX, MIR 70 cm Repeater
(Uplink 435.750 MHz FM, Downlink 437.950 MHz FM,
Subaudible tone 141.3 Hz)
Not operational at this time.
RS-10
(Uplink 145.865-145.905 MHz CW/SSB, Downlink 29.36-29.4 MHz CW/SSB)
RS-10 Still silent.
RS-12
(Uplink 21.21-21.25 MHz CW/SSB, Downlink 29.41-29.45 MHz or
145.91-145.95 MHz CW/SSB)
Operational.
"Now that RS-12 is more conveniently timed for us working folks during
August, it's good to hear that the signals remain strong. However, we
east coast US folks certainly hope that our colleagues in the two
island states (Hawaii and Rhode) and the western states (esp.,
Wyoming, Montana and Idaho) take full advantage of the low sunspots
and strong signals and join the fun on this bird. Your presence is
greatly missed."
[ANS thanks Dick Montgomery, N3DV, for this update.]
RS-15
(Uplink 145.858-145.898 MHz CW/SSB, Downlink 29.354-29.394 MHz CW/SSB)
Operational.
(Hint: If SSB doesn't work for you, try CW. CW is very easy
to hear on the downlink!)
RS-16
IW9ELR, heard the 435.504 MHz beacon-telemetry of
RS16.
Signal was very strong 9++ and the cw-note was constant.
At 29.408 only a carrier without CW over.
[ANS thanks Rosario Orlando, IW9ELR, for this update.]
RS-16 CW Telemetry.
P PSU voltage Volts.................. x0.1
O Solar panel voltage Volts........... x0.1
N Solar panel current mA
M TX 29 MHz Output Power mW............ x10
L TX 29 MHz current mA
K TX 29 MHz voltage 7V nominal
J TX 435 MHz Output Power mW........... x10
I TX 435 MHz current mA
H TX 435 MHz voltage V................. x0.1
G U of the transponder V............... x0.1
F U of stabilizer V................... x0.1
E Temperature of the charger in C deg.
D Temperature TX 29 MHz in C deg.
C Temperature TX 435 MHz in C deg.
B Temperature RX 145 MHz in C deg.
A Temperature of the stabilizer in C deg.
Parameters M, L, J, I are valid in FM mode only!
Transponder information on RS-16.
Uplink = 145.915 - 145.948 MHz
Downlink = 29.415 - 29.448 MHz
Beacons = 29.408 , 29.451 MHz
Pwr 29 MHz Down = 1.2 W /4 W
Beacon 1 = 435.504 MHz
Beacon 2 = 435.548 MHz
Pwr 435 MHz Beacons = 1.6 W
FO-20
(Uplink 145.9-146.0 MHz CW/LSB, Downlink 435.8-435.9
MHz CW/USB)
Operational. FO-20 in mode JA continuously.
[ANS thanks Kazu Sakamoto, JJ1WTK, for this report.]
KO-23
(Uplink 145.85, 145.9 MHz FM, Downlink 435.175 MHz FM,
9600 Baud FSK.)
KO-23 operating normally.
KO-25
(Uplink 145.980 MHz FM, Downlink 436.5 MHz FM,
9600 Baud FSK.)
KO-25 operating normally.
[ANS thanks Jim Weisenberger, AA7KC, for his reports on
KO-25 and KO-23.]
AO-27
(Uplink 145.85 MHz FM, Downlink:
436.792 MHz FM (As of April 1, 1997)
Operating normally.
This information can be found at www.umbra.com
AO-27 TEPR (Timed Eclipse Power Regulation) States are as follows
As of July 6, 1997
TEPR STATE Time TX Status
----------------------------------------
1 n/a OFF
2 n/a OFF
3 --- OFF
4 21 OFF
5 17 ON at Med Power
6 --- OFF
The TEPR States are defined as follows:
Tepr 1, Started when the satellite Enters the Eclipse
Tepr 2, Started at (tepr 1 time) after the satellite enters the eclipse
Tepr 3, Started at (tepr 1 time) + (tepr 2 time).
Tepr 4, Started when the satellite enters the Sun
Tepr 5, Started at (tepr 4 time) after the satellite enters the Sun
Tepr 6, Started at (tepr 4) + (tepr 5).
It should noted that TEPR states 1,2 and 3 happen during the Night Time
passes and TEPR states 4,5 and 6 happen during the Day time passes.
These occur during EVERY pass, not just over the U.S.A.
The times assigned to the TEPR states are chosen for the health of the
satellite over operation convenience. Therefore, during parts of the
year the satellite will turn on late or turn off early as seen by ground
stations.
Users are asked not to transmit on 145.85 MHz if they do not hear the
satellite's downlink so as to avoid possible interference to other
satellite uplinks and downlinks on adjacent frequencies.
[ANS thanks Michael Wyrick, N4USI, AO-27 Control-op, for this update.]
FO-29
Voice/CW Mode JA
(Uplink 145.9-146.0 MHz CW/LSB, Downlink 435.8-435.9 MHz CW/USB)
Digital Mode JD
(Uplink 145.85, 145.87, 145.910 MHz FM, Downlink 435.910 MHz FM 9600
baud BPSK)
Operational.
The latest FO-29 Schedule.
Aug 22 (Fri) 08:26z JD1200
Aug 29 (Fri) 00:40z JD9600
Sept 5 (Fri) 01:18z JA
Sept 12 (Fri) 00:13z JD1200
Sept 19 (Fri) 00:51z JD9600
Sept 26 (Fri) 08:09z JA
[ANS thanks Kazu Sakamoto, JJ1WTK, for this report.]
/EX
SB SAT @ AMSAT $ANS-236.06
WEEKLY SATELLITE REPORT PT 2
HR AMSAT NEWS SERVICE BULLETIN 236.06 FROM AMSAT HQ
SILVER SPRING, MD, AUGUST 24, 1997
TO ALL RADIO AMATEURS BT
BID: $ANS-236.06
AO-10
(Uplink 435.030-435.18 MHz CW/LSB, Downlink 145.975-145.825 MHz
CW/USB)
Operational. Very active over North America, with good downlink
signals
OSCAR-11
(Downlink 145.825 MHz. FM, 1200 Baud PSK. Beacon 2401.500 MHz..)
Operating normally. OSCAR-11 REPORT for 19 August 1997
Another uneventful month for OSCAR-11! During the period 18-July to
19-August there were no new bulletins or WOD surveys. However the
magnetorquer counters were reset by ground control during the first
week in August.
Excellent signals have once again been received from the 145.826 MHz.
beacon. The mode-S beacon has been heard by Andreas, IW0EAC in Rome.
Andreas uses a 60 cm dish, 0.6dB NF pre-amp, and a DB6NT converter.
Clear and strong signals on two consecutive passes. John, LA2QAA, in
Frei Island, Norway also reports reasonable strength signals on July
27, using a 50 cm dish, and G0MRF converter. Thanks Andreas and John
for those reports..
Telemetry is nominal. The battery voltage has been maintained in the
range 14.0 to 14.4 volts. The internal temperatures are slowly
increasing from the minimum values observed at the end of June
(battery -0.4C, telemetry electronics 1.6 C). The battery
temperature is now 3.4C, and telemetry electronics 2.2C. This is due
to a reduction in solar eclipse times.
A single WOD survey of channels 10, 20, 30, 40 (+Y, -X, +X array
currents, array voltage) dated 25 June has been transmitted during
this period.
A single AMSAT-UK bulletin by Richard G3RWL has been transmitted.
This featured Sputnik-1 40th anniversary, MIR frequencies, and RS-10
news. Bulletins always include current Keplerian elements for
OSCAR-11, and often Keps for satellites featured in the bulletin.
Richard always welcomes short news items for inclusion in the
OSCAR-11 bulletin. His e-mail address is g3rwl@amsat.org
The operating schedule is unchanged.
ASCII status (210 seconds)
ASCII bulletin (60 seconds)
BINARY SEU (30 seconds)
ASCII TLM (90 seconds)
ASCII WOD (120 seconds)
ASCII bulletin (60 seconds)
BINARY ENG (30 seconds)
There are also additional status blocks after each bulletin is
transmitted, and between ASCII TLM and WOD.
The mode-S beacon is ON, transmitting an unmodulated carrier, but
telemetry indicates that it has partially failed, and delivering half
power. Any reports of reception on 2401 MHz. would be most welcome.
Please e-mail g3cwv@amsat.org.
The 435.025 MHz. beacon is normally OFF. However it can sometimes be
heard when the satellite is being commanded by ground control, i.e.
within range of Guildford, UK. When the 435 beacon is transmitting,
the 145 MHz beacon is normally OFF. he data transmitted is mainly
binary.
OSCAR-11 users are welcome to visit Clive Wallis' web site. It
contains some software for capturing data, and decoding ASCII telemetry
and WOD. There is an archive of raw data (mainly WOD) for analysis, which is
continually being expanded, as new data is captured. The URL is -
http://www.users.zetnet.co.uk/clivew/
[ANS thanks Clive Wallis, G3CWV, for this information.]
AMSAT-OSCAR-16 (PACSAT)
(Uplink 145.9, 145.92, 145.94, 145.86 MHz FM, 1200 bps Manchester FSK
Downlink 437.0513 MHz SSB, 1200 bps RC-BPSK 1200 Baud PSK.
Beacon 2401.1428 MHz.)
Operating normally.
Graphic information about WOD/Telemetry values can be found at:
http://www.arrakis.es/~ea1bcu/wod.htm
[ANS thanks Miguel A. Menendez, EA1BCU, for this report.]
DO-17(DOVE)
( Downlink 145.825 MHz FM, 1200 Baud AFSK.
Beacon 2401.220 MHz.)
The DOVE s-band signal is 1200 PSK with no carrier suppression. The
modulation is about 20 dB below the carrier. A carrier with lots of
Doppler should be heard. If receiving equipment is working well,
a 'buzz' can be heard from the flags and an occasional change in
the sound of that modulation as a telemetry beacon is sent. If it's
working really well and received audio can be run through a PSK demod
then a tracking notch filter (DSP) you will clearly hear the flags and
modulation. In the northern hemisphere there will be deep fades about
every 30 seconds due to the rotation of the satellite. In the southern
hemisphere there will probably be some fades but not nearly as deep
because the antenna points down when below the equator.
[ANS thanks Jim White, WD0E, for this report.]
WEBERSAT (WO-18)
(Downlink 437.104 MHz SSB, 1200 Baud PSK AX.25.)
No report available.
LUSAT-OSCAR-19
(Uplink 1200 bps Manchester FSK Uplinks:
145.84, 145.86, 145.88, 145.9 MHz FM, Downlink 437.125 MHz SSB,
1200 bps RC-BPSK.)
Operating normally.
Graphic and general information about Telemetry values can be found at:
http://www.arrakis.es/~ea1bcu/lo19.htm
[ANS thanks Miguel A. Menendez, EA1BCU, for this report.]
UO-22:
(Uplink: 145.9 or 145.975 MHz FM. Downlink 435.120 MHz FM
9600 Baud FSK.)
UO-22 is operating normally.
Chris Jackson, G7UPN / ZL2TPO, has reloaded the Store and Forward
communications task on the UO-22 On-Board Computer. This task includes
incremental checksums which should make uploading slightly faster.
In the old task, once an upload was complete, the spacecraft had to
perform the checksum on the complete file. Depending on the file
length, this could take quite a long time. With the new task, the
checksum is computed on the fly - while the data is actually being
uploaded. Thus there is no need to recompute it at the end of the
transfer and this checksum delay is then removed.
However, all files that were started before Chris Jackson, G7UPN /
ZL2TPO, loaded the task around 1000 UTC on the 19th will receive a corrupt
body checksum error when the upload is completed. If the file is uploaded
again, it should be accepted. If trying to upload a large file that was
started before the above time, then start again.
If anyone gets persistent body checksum errors while uploading files to
UO-22 would they please let Chris Jackson know as soon as possible
[ANS thanks Chris Jackson, G7UPN / ZL2TPO,
Groundstation and Operations Manager, for this report.]
IO-26 ( ITAMSAT)
Uplink 145.875, 145.9, 145.925, 145.95 MHz FM, Downlink 435.822 MHz SSB,
1200 Baud PSK.)
The satellite is in good shape.
Daniele Piercarlo, IK2XRO, will try to reload the BBS soon.
[ANS thanks Daniele Piercarlo, IK2XRO, ITMSAT Command Station for this
report.]
[Please send your Satellite or News reports to ANS Editor B.J. Arts,
WT0N, via e-mail, at bjarts@the-bridge.net or to wt0n@amsat.org]
/EX
BJ Arts
Amateur callsign: WT0N
ARMY MARS callsign: AAR5EL
Grid Square EN-37mk
Hibbing, Minnesota. U.S.A.
e-mail bjarts@the-bridge.net or wt0n@amsat.org
Amsat News Service Bulletin Editor