~MarciaH
Fri, Nov 17, 2000 (12:31)
#201
Did anyone DX the Leonids last night??
Good on ya, Mike! Toast those marshmallows and hunker down by the bottle rig!
~MarciaH
Fri, Nov 17, 2000 (21:32)
#202
Listen to the Leonids Tonight
Space Weather News for Nov. 17, 2000
http://www.spaceweather.com
Scientists at the NASA Marshall Space Flight Center in Alabama are
operating a radio meteor detection system that records audible echoes as
meteors streak by. During the Nov. 18th Leonid meteor shower (Friday
night and Saturday morning) sounds from the system will be available live
on the web at http://www.spaceweather.com and http://www.leonidslive.com.
Every ping you hear corresponds to a meteor over the Eastern U.S.!
For more information visit SpaceWeather.com.
~MarciaH
Sat, Nov 18, 2000 (13:04)
#203
Propagation Forecast Bulletin 46 - November 17, 2000
Sunspot numbers and solar flux were down over the past week. Average
sunspot numbers were down over 40 points and average solar flux was
off by 36 points relative to the previous week. The expected
geomagnetic disturbance arrived earlier than predicted, with Friday
being the worst day, with a planetary A index of 41. Planetary K
indices reached 6 for several periods on Friday. Saturday was fairly
quiet, and Sunday was fairly active with the planetary K index at
20. Following the weekend the geomagnetic conditions have been
quiet.
Solar flux probably reached a short term minimum of 143.7 on Monday,
and is now rising. Flux values for Friday through Tuesday are
expected to be 155, 155, 160, 160 and 165. Solar flux is expected to
peak around 200 from November 27-29. Expected planetary A index
values for Friday through Tuesday are 12, 10, 20, 12 and 10, so the
current predicted value for this Sunday is nearly identical to last
Sunday. The unsettled conditions on Sunday will probably be due to a
solar flair that occurred early Thursday.
Beyond the weekend, the next predicted unsettled day is November 29,
and December 5 looks like an active geomagnetic day, as well as
December 8 and 9. Of course this is based upon the previous solar
rotation.
Look at the chart at http://www.wm7d.net/hamradio/solar/. It looks
as if solar flux and sunspots generally declined over the past six
months.
Sunspot numbers for November 9 through 15 were 149, 141, 128, 112,
99, 131 and 144 with a mean of 129.1. 10.7 cm flux was 166.2, 153.4,
149.6, 146.6, 143.7, 148.6 and 146.5, with a mean of 150.7, and
estimated planetary A indices were 11, 41, 12, 21, 8, 5 and 5 with a
mean of 14.7.
~MarciaH
Tue, Nov 21, 2000 (18:22)
#204
Did you catch any, Mike? Anyone? We caught raindrops...!
NASA Science News for November 21, 2000
The art of predicting Leonid meteors officially became a science this weekend as sky watchers around the globe enjoyed three predicted episodes of shooting stars. This story includes video and some unusual pictures of Leonid fireballs.
FULL STORY at
http://science.nasa.gov/headlines/y2000/ast21nov_1.htm?list89800
~MarciaH
Wed, Nov 22, 2000 (19:01)
#205
Shepherd makes first casual QSOs from ISS
The Amateur Radio on the International Space Station program has
announced that Commander William ''Shep'' Shepherd, KD5GSL, has made
the first casual Amateur Radio contacts from Space Station Alpha.
Shepherd reports that he was able to take a few minutes out of his
busy schedule on Friday, November 17, to engage in contacts with a
few lucky hams. Before then, the only Amateur Radio contacts
involved engineering test passes between the ISS and Russian and US
amateur facilities.
ARISS spokesman Will Marchant, KC6ROL, says that with the recent
arrival at ISS of a Progress cargo craft, the crew will have to
redouble its work pace. The space shuttle Endeavour STS-97 mission
to the ISS will launch November 30, so the Expedition 1 crew will
continue to put in some long hours preparing for its arrival.
Endeavour is carrying a large new solar panel for the ISS that will
permit the station to be fully powered for the first time.
More information about Amateur Radio on the International Space
Station is available on the ARISS Web site,
http://ariss.gsfc.nasa.gov/.
~MarciaH
Wed, Nov 22, 2000 (19:13)
#206
Limited AO-40 use possible in near future
Plans are in place to make AO-40 available for a limited period of
general amateur use ''possibly within a week or two,'' says AMSAT-NA
President Robin Haighton, VE3FRH. Launched November 16, the
next-generation Amateur Radio satellite formerly known as Phase 3D
remains for now in a geostationary transfer orbit while initial
housekeeping and checkout procedures are under way.
Just when and how the ''limited operation'' will occur is up to the
ground controllers, Haigton said. The provisional operation would
involve ''one or two bands at a time.'' Since the satellite's solar
panels will not be deployed until AO-40 is in its final orbit, full
power will not be available.
Haighton said the most likely configurations for the limited test
period would be 70 cm up and 2 meters down and 1.2 GHz up and 2.4
GHz down, SSB and CW.
Details of the limited test period will be announced.
AMSAT has stressed that the Phase 3D/AO-40 controllers are closely
monitoring the power budget and the satellite's current orbital
parameters. ''These two areas will be among the most important
factors that determine what happens with P3D in the near future,''
AMSAT said this week.
From all indications, most AO-40 systems are working properly at
this point, with the possible exception of the 70-cm transmitter.
Phase 3D Project Manager Karl Meinzer, DJ4ZC, says ''a problem with
the 70 cm transmitter'' led controllers to shift the telemetry
downlink from 70-cm to 2 meters, 145.898 MHz.
Phase 3D will not be opened for full amateur use until it's been
placed in its final orbital configuration. That's expected to take
about nine months.
For more information, visit the AMSAT-NA Web site,
http://www.amsat.org/.
~MarciaH
Sun, Nov 26, 2000 (18:47)
#207
Interplanetary shock wave hits Earth; more to come....
Space Weather News for Nov. 26, 2000
http://www.spaceweather.com
The first of several coronal mass ejections now heading toward Earth hit
our planet's magnetosphere between 0500 and 0600 UT on Nov. 26th.
Geomagnetic activity could become severe during the next 48 hours as one
shock wave after another reaches Earth. We encourage sky watchers to be
alert for auroras at middle- and perhaps even low-latitudes. The new Moon
will afford dark skies for spotting faint Northern Lights.
Visit http://www.spaceweather.com for details and updates.
~aa9il
Sun, Dec 3, 2000 (17:24)
#208
Howdy All
Sorry for falling off the face of the earth but those ledges
at the prime meridian are not well marked and there is NOT
a guard rail either....
Anyway, with grad skool complete for this semester, I actually
have time to do stuff including finally bolting my 24 and 47
ghz up/down converters to their respective antenna switch
assemblies. The main reason for this post is that I finally
got the address for the SLF/ELF audio recordings - these are
time compressed onto a 90 minute cassette and cover signals
below 3 Hertz. The tape costs $10 money order mailed to
John M. Lauerman
26810 S.E. Duthie Hill Road
Issaquah, WA 98029
73 de Mike
Radio Cosmo International
~MarciaH
Sun, Dec 3, 2000 (18:50)
#209
Mahalo Mike! Welcome out of your Ivory Tower Dungeon for the holidays.
~aa9il
Tue, Dec 5, 2000 (20:13)
#210
Howdy Marcia and Geo-ites
Yea, Ivory Tower Dungeon is an apt term - good thing I
like going to school. Now, if I could just figure
out how to do school full time and not have to work...
Anyway, no exciting signal reports as of yet since
I have not been listening to the radio much. The R390A
got shipped off for restoration and the SP600 has been
pressed into backup duty. It fired right up despite
sitting dormant for a year. (No telling how long it
sat dormant in a surplus warehouse... I plugged it
in and it came right back to life. Ah, good ol tube
gear....) Right now, catching up on microwave stuff
which seems to have piled up again (and again and again...)
Cheers from the radio room
de Mike
radio cosmo international
~MarciaH
Tue, Dec 5, 2000 (20:35)
#211
wishing I were a mouse in the corner so I could listen, too... I'd even share my cheese with you!!!
~MarciaH
Fri, Dec 8, 2000 (18:21)
#212
Propagation - December 8, 2000
Average solar flux was down and sunspot numbers were up this week.
At least there weren't any major geomagnetic disturbances. Quiet and
stable conditions prevailed, with A indices in the single digits.
Solar flux probably reached a short term minimum at 1800z on
December 6 of 140.2, and at the 1800z reading the next day it was
140.8. The official daily readings are at 2000z, which is why you
won't see those numbers reported here in the summary at the end of
this bulletin.
After the low flux numbers for the previous two days, solar flux is
expected to rise to a peak near 200 around December 20-23. Current
prediction shows flux values for Friday through Tuesday, December
8-12 at 145, 150, 150, 155 and 160. The next short term minimum for
solar flux is predicted for after the new year.
Unfortunately for hams looking forward to the 10-Meter contest this
weekend, the quiet conditions will probably not continue. The
predicted planetary A index for Friday through Tuesday is 15, 25,
15, 12 and 10. The active conditions in this weekend's forecast are
probably due to a coronal hole in the center of the visible solar
disk. This will be a problem for high latitude and east-west
propagation. There was also a solar flare toward the end of the UTC
day on December 6.
Sunspot numbers for November 30 through December 6 were 191, 157,
141, 186, 120, 90 and 99 with a mean of 140.6. 10.7 cm flux was
192.3, 184.5, 167, 163.6, 152, 147 and 141, with a mean of 163.9,
and estimated planetary A indices were 6, 6, 4, 12, 10, 4 and 7 with
a mean of 7.
~MarciaH
Mon, Dec 11, 2000 (15:42)
#213
Listen to the Geminids
Space Weather News for Dec. 11, 2000
http://www.spaceweather.com
GEMINID METEOR SHOWER: Scientists at the NASA Marshall Space Flight Center
have established a radio meteor detection system to monitor this week's
Geminid meteor shower. Although the shower doesn't peak until December
13th, plenty of Geminid meteoroids are already streaking through Earth's
atmosphere. You can listen to their eerie-sounding radio echoes in
realtime at http://www.spaceweather.com.
SUBMIT YOUR PHOTOS: The glare from this week's nearly-full Moon will
substantially reduce the number of visible Geminid meteors. Nevertheless,
sky watchers in rural areas will likely spot 20 or more shooting stars per
hour -- a fairly pleasing shower. We invite photographers who capture
images of Geminid meteors to submit their photos for display on
spaceweather.com. Simply send your files as email attachments to
webmaster@spaceweather.com.
~MarciaH
Thu, Dec 14, 2000 (15:37)
#214
PROJECT SETI@HOME UPDATE
PROJECT STATUS
Halfway through our second year of operation, SETI@home has processed
over 7000 hours of digitally-recorded signals from the Arecibo radio
telescope, using the power of millions of Internet-connected computers.
As this processing continues, SETI@home's own computers are
doing the next phase, in which we separate man-made radio signals from
those originating outside our solar system. Our goal is to detect
signals from other civilizations.
By using the Internet to form the world's most powerful computer,
SETI@home has inspired other scientific computing projects,
and is often credited (along with Napster) with defining a
new generation of computer system design, called "peer-to-peer".
Because of the strong continued interest in SETI@home, the project will
continue for at least a year beyond its original ending time. Plans are
not finalized, but we hope to expand our search to the
southern-hemisphere sky, and to search new frequency bands.
We will also try to make SETI@home more fun and interesting by adding
new content and features to our web site. Our small but hard-working
staff (5 part-time members) has had little time to work on this area,
but we're expanding our efforts.
--------------------------
RELEASE OF VERSION 3 SOFTWARE
After almost a year of testing and debugging, we recently released a
major new version of our screensaver program. The new version does
much better signal analysis; it looks for two new types of signals
(pulses and triplets) and it covers a wider range of drift rates.
As a result, it takes more time to process each work unit.
The old version of SETI@home should automatically notify you when
it's time to upgrade to the new version. You can download and
install it from our web site:
http://setiathome.berkeley.edu/download.html
--------------------------
NEW SPONSORSHIP FROM ONE COSMOS NETWORK AND THE PLANETARY SOCIETY
We're proud to announce an alliance of SETI@home with One Cosmos Network
and The Planetary Society. This alliance will give us the financial
support necessary to continue and expand SETI@home, as well as
enabling us to provide a richer Web experience.
Founded by Internet executive Joe Firmage and Ann Druyan, Carl Sagan's
wife and collaborator of 20 years, One Cosmos Network is dedicated to
carrying on Sagan's effort to humanize science and bring it to people
everywhere. Toward this end, One Cosmos is constructing an Internet
portal, OneCosmos.net, and a production studio, Cosmos Studios, which
will create compelling science-based entertainment for television and film.
Their first release is an updated, digitally remastered Collector's Edition
of the Emmy and Peabody Award winning 13-hour television series, "Cosmos."
The series is currently available for purchase in DVD or VHS format,
with "The Music of Cosmos" available separately in a double-CD format;
find them at http://OneCosmos.net.
The Planetary Society is the founding sponsor of SETI@home, and its
membership is open to anyone who shares the goals of exploring our
solar system and searching for extraterrestrial life. In fact, the
Society supports six different SETI efforts, along with many other
projects in space exploration. We encourage you to join
The Planetary Society and help advance their many worthy programs at
http://planetary.org/html/member/JoinUs.html
We are also extremely grateful to our other sponsors, including
the University of California Digital Media Innovation Program,
Sun Microsystems, Fuji Film Computer Products, Quantum, and
the SETI Institute.
Thanks also to the hundreds of individuals who have made
contributions to SETI@home. Their names are listed at
http://setiathome.berkeley.edu/donorlist.html
SETI@home is free for everyone, but if you can consider
making a tax-deductible donation to SETI@home, please visit
http://setiathome.berkeley.edu/donor.html.
--------------------------
NEW SETI@HOME GEAR IS HERE
While our goal is to detect life in outer space, we can't do that
without the support of our fellow Earthlings. Last year, we introduced
several SETI@home products in our online store. The response was so
great that this year we've expanded the product line. There are great
new sweatshirts, mugs, T-shirts, jackets, desk clocks, lapel pins,
patches, and even a heat-sensitive mouse pad. Want more? How about
your very own, very elegant, blown-glass globe? Or (our personal
favorite) a stylus, red and black pens, and mechanical pencil packed
into one very cool gravity-fed tool. You'll find them all online at
http://www.exploratoriumstore.com/setihome.html.
The profits from each sale help fund the SETI@home project.
~MarciaH
Mon, Dec 18, 2000 (21:32)
#215
AMSAT OSCAR-40 remains silent, and command stations on the ground
still have been unable to reestablish contact with the Amateur Radio
satellite. It had been hoped that an onboard computer timeout
expected on or about December 16 would restart the beacon telemetry
and give the ground crew some clues as to why AO-40 suddenly stopped
transmitting on December 13.
AMSAT-Germany's Peter Guelzow, DB2OS, of the AO-40 team, said
nothing was heard over the weekend, and command stations tried to
re-establish communication by sending blind commands. If the reset
had occurred, the satellite would have been restored to its
post-launch configuration and attempt to transmit on 70 cm. However,
the 70-cm transmitter has been problematic, and the satellite likely
still would need to be reconfigured for 2-meter transmission at that
point to be heard on Earth.
The AO-40 team is continuing to investigate reports of weak signals
on the 2-meter downlink frequency of 145.898 MHz that seem to be
coming from AO-40, but it has discounted reports of telemetry heard
there as a hoax. Other reports persist of a weak, unmodulated
carrier, however.
Guelzow said today that the AO-40 team is encouraged by a report
from the North American Air Defense Command--NORAD. The report
indicates that AO-40 was found to be in one piece, that the orbit
was exactly were it should be, that the radar cross-section was as
expected, and that no other pieces were found. Guelzow said the
NORAD data counter rumors ''which no one on the inner team
believed'' that AO-40 might have exploded.
AMSAT-NA President Robin Haighton said ground controllers were
exploring several options.
When and whether the satellite will be heard from again depends, in
part, on whether AO-40 has picked up any of the ''blind commands''
sent by ground controllers. Guelzow says that if no commands were
accepted by the IHU-1 onboard computer since contact was lost
December 13, then a ''command-assist'' watchdog routine on December
21 will cycle the satellite through various receive, transmit,
high-gain and low-gain antenna modes. If AO-40 did pick up some
commands, Guelzow said, the command-assist watchdog will be reset
for another 10 orbits. That could extend the wait until sometime
after Christmas.
Guelzow says the ''watchdogs'' are software resets. Ground
controllers want to avoid doing a hard re-boot of the main computer,
which is considered a last resort. ''There is no need to hurry, and
the command team doesn't want to miss any option,'' he said.
~MarciaH
Sun, Dec 24, 2000 (19:13)
#216
Propagation Forecast Bulletin 51 - December 22, 2000
Average solar flux and sunspot numbers were up sharply this week.
The solar flux average for the week was up over 47 points and
sunspot numbers rose over 85 points. It has been a quiet week
geomagnetically, with planetary A indices in the single digits.
Solar flux probably peaked at 2200z on December 20, when it reached
207.7. Solar flux is predicted over the next few days, Friday
through Monday at 195, 195, 190 and 190. The planetary A index for
those days is predicted at 12, 15, 15 and 12. The reason for the
unsettled geomagnetic condition is a coronal mass ejection on
December 18 that is expected to cause a weak disturbance.
Beyond this weekend look for solar flux to drop to a short term
minimum of 140 around January 3-5. The next peak is expected from
January 16-19.
Check the bottom of Jan Alvestad's Solar Terrestrial Activity Report
at http://www.dxlc.com/solar/ . He has a table showing monthly
averages of solar flux and sunspot numbers, as well as a smoothed
sunspot number. According to his table, the highest average monthly
solar flux was in March of this year, although July was almost as
high. The highest sunspot number was in July, and during April he
shows a smoothed sunspot number of 120.8, which may be the peak of
this solar cycle. The peak of cycle 23 has probably passed, although
we could get an increase in activity which would extend the peak.
Fortunately, sunspot cycles seem to go up faster than they decline.
Sunspot numbers for December 14 through 20 were 157, 181, 217, 229,
174, 163 and 183 with a mean of 186.3. 10.7 cm flux was 182.2,
187.8, 190.5, 196.7, 198, 198.6 and 201.3, with a mean of 193.6, and
estimated planetary A indices were 4, 3, 4, 8, 10, 5 and 4 with a
mean of 6.3.
~MarciaH
Tue, Dec 26, 2000 (17:00)
#217
Space Bulletin 027 - December 22, 2000
It was a historic moment for Amateur Radio. Some 200 youngsters,
teachers, parents, and news media representatives were on hand at
Luther Burbank Elementary School near Chicago December 21 to witness
the first successful Amateur Radio on the International Space
Station school contact.
Several pupils plus one teacher got to chat with Space Station Alpha
Commander William ''Shep'' Shepherd, KD5GSL, via ham radio. Earlier
attempts by the school on December 19 were unsuccessful, despite the
extensive technical preparations.
On December 21, however, Shepherd, using the special NA1SS call
sign, came right back to a call from veteran SAREX/ARISS mentor
Charlie Sufana, AJ9N, at the school. Sufana and his ARISS team had
spent the better part of two weeks setting up gear and antennas for
the scheduled contact. Antenna setup was hampered by repeated
snowstorms and frigid temperatures, but the efforts paid off.
''I'm happy that we were able to pull it off,'' Sufana said. ''The kids
were bouncing off the walls.''
During the 10-minute pass, 14 first through eighth graders plus
science and math teacher Rita Wright got a chance to pose questions
about life aboard Space Station Alpha to Shepherd.
Shepherd said he especially enjoyed being able to float around in
the space station. He said the crew is keeping detailed logs about
life on the space station, and that the crew was enjoying taking
pictures of Earth from space, ''because you can see things that you
can't see from the ground.'' Shepherd also explained that about 90
percent of water in the air inside the space station is recovered
and reused.
At the conclusion of the successful contact, the grateful crowd
applauded loudly and offered up a hearty ''thank you!'' and ''73!'' to
Shepherd and his Russian crewmates. Shepherd said he was looking
forward to future school contacts. Another two dozen schools are
under consideration for ARISS school contacts. Schools in Virginia
and New York are tentatively scheduled for contacts next month.
More information about requesting dedicated contacts is available on
the ARISS web pages, http://ariss.gsfc.nasa.gov/.
~sprin5
Wed, Dec 27, 2000 (04:10)
#218
That's great, I'd like to find the frequencies they're on and post them here. Or maybe you know the recent schedule, Marci?
~MarciaH
Wed, Dec 27, 2000 (14:19)
#219
I'll see what I can find Terry!
FCC Requests Voluntary Communications Emergency in and around TEXAS
The FCC has requested that Amateur Radio operators in and around
Texas voluntarily relinquish the use of 3870 to 3878 kHz to enable
the handling of emergency traffic. Ice storms have disrupted power
and communication and made for hazardous travel conditions in the
region. Amateur Radio operators have activated the Emergency and
Tactical Traffic Net to handle traffic related to the weather
emergency.
At the request of ARRL South Texas Section Manager Ray Taylor,
N5NAV, Leroy Pittman of the FCC has asked the amateur community to
cooperate in recognizing the existence of a voluntary communications
emergency and to stay clear of the specified 75-meter frequencies.
Taylor reports that Amateur Radio operators already have helped with
hospital communications after hospital telephones were knocked out.
A net on 7285 kHz has been handling much of the winter storm-related
traffic during daylight hours.
A copy of Pittman's request to voluntarily relinquish use of the
specified 75-meter frequencies was sent to the FCC's HF Direction
Finding facility in Columbia, Maryland.
~aa9il
Thu, Dec 28, 2000 (20:42)
#220
Howdy All
Well, one very good bit of news. Control stations were able
to jump start AO40 and its transmitting with its mode S (2.4ghz)
beacon. There is hope for the satellite future!
Of course, way too busy as of late but progress has been made
on the 5.7ghz system and some tests were run on a cobbled
together 24ghz receive system. Plus playing with the new
Christmas toy - a Garmin GPS receiver.
Anyway, back to the lab.
Happy Holidays from the Radio Cosmo Collective
~MarciaH
Thu, Dec 28, 2000 (23:45)
#221
Yes, Mike!!! Good show and great news about AO40. Much concern about that.
Happy New Year *hugs* for keeping us up to date
~MarciaH
Thu, Jan 4, 2001 (16:11)
#222
AO-40 Recovery Continues - January 4, 2001
Efforts continue to assess the status of AO-40 following a
resumption of telemetry transmissions. AO-40 went silent December
13, but ground controllers successfully reset the main computer on
Christmas Day and got the satellite transmitting again.
Ground controllers now are analyzing the telemetry sent via the S2
beacon on 2401.305 MHz. AMSAT-NA President Robin Haighton, VE3FRH,
says the command team worked through the holidays in an effort to
determine just what went wrong aboard AO-40. Among other things,
ground controllers would like to know what actually happened on
December 13 and why, as well as which telemetry functions are known
to be correct and which data are suspect and why. The satellite went
silent during maneuvers to test its onboard 400-Newton propulsion
system following an earlier orbit-shifting burn.
Ground controllers also want to know the spacecraft's actual
attitude with respect to Earth--and if it has changed attitude.
Other parameters they'll be examining include spin velocity, the
status of batteries, battery chargers and regulators, and what
happened to the onboard computers, IHU-1 and IHU 2, and why.
The AO-40 command team also wants to find out if all the antennas
are operational and what can be done next to improve communications,
and if there are any risks involved in attempting to restart onboard
systems. So far, the 2-meter beacon transmitter has remained off the
air since AO-40 was returned to ground control on Christmas Day.
It's believed that problems with the 70-cm transmitter developed
shortly after launch. The 2.4 GHz transmitter appears to be
operating ''nominally,'' however.
''When questions such as these--and others--are answered, it may be
possible to determine the working capability of the spacecraft, and,
if appropriate, to start to try operation on other bands,'' Haighton
said. He said critical decisions will be made over the next week or
two ''based on the results of the analysis and much discussion among
the command team.''
~MarciaH
Fri, Jan 5, 2001 (16:55)
#223
AO-40 Could Be Leaking
AO-40 team member Peter Guelzow, DB2OS, says a small leak on AO-40
could account for the higher spin rate ground controllers have
noticed since the satellite resumed telemetry transmissions on
Christmas Day. Guelzow called on the amateur community to be patient
during the AO-40 recovery.
''The good thing is that AO-40 seems to be in a very stable
condition, and there are no signs of further damage,'' Guelzow said
today in a posting to the AMSAT bulletin board. ''However, there is a
sign of a small leak.''
Ground controllers continue to look into the reason for the higher
spin rate as well as into other items under investigation, Guelzow
said, and the results will be reported when the AO-40 team reaches
its final conclusions. He said the priority for now is to get AO-40
back to normal as soon as possible.
AO-40 went silent December 13 while ground controllers were testing
the onboard 400-newton propulsion system. Guelzow's posting did not
indicate whether he thought that propulsion system fuel or some
other substance was escaping through the suspected leak. A computer
reset command Christmas Day brought the satellite back to life, but
telemetry data suggest that AO-40 suffered some damage. Since
Christmas, the AO-40 ground team has been analyzing telemetry sent
via the 2.4 GHz beacon--the only transmitter now operating--to
determine the status of AO-40's onboard systems.
Guelzow said that once the AO-40 team has a handle on the antenna
situation it might attempt to get the 2-meter and possibly the
70-cm transmitters working. Until then, he said, AO-40 will continue
to use the 2.4 GHz downlink. Guelzow said that because of the
currently limited downlink capabilities, uploading of new commands
and analyzing the results is taking somewhat longer than it would
under normal circumstances.
The AO-40 team also is evaluating the satellite's magnetorquing
attitude control system and wants to spin down the spacecraft and
adjust AO-40's attitude for better sun and squint angles. In
addition, ground controllers will be taking a close look at various
other systems and experiments onboard, including the arcjet and the
stabilization wheels.
''Once this is completed and we have a complete overview, then we can
declare the spacecraft to work normally and perhaps think about
re-defining the mission of AO-40, whatever it will be,'' Guelzow
said.
~aa9il
Sun, Jan 7, 2001 (18:46)
#224
Hey Kids
Well, still waiting for the AO40 reports to trickle in.
The way things are looking, I will have plenty of time
to cobble bits together in time for the spring thaw.
(Got up to 32 deg today - yow!)
Playing with some new toys from the most recent ham fest.
One step closer to amateur television with the new CCD
camera unit (in CosmoVision, of course....)
Also picked up a Delorme Tripmate GPS unit very cheap.
Hooked it up to the pc and ran a terminal emulator - after
goofing around for a bit, got the unit to come to life
by sending over the correct init code which resulted in
the unit spewing over raw GPS data. Finally, a multimode
RF data modem so I can play with Packet, Amtor, RTTY, APRS,
etc....
enuf stuff to keep me humored/annoyed for a while....
73 de AA9IL
Mike
radio cosmo international
~MarciaH
Sun, Jan 7, 2001 (22:15)
#225
Mike! Fantastic - now just hook up your little computer tv cam and we can watch you do all this stuff! Seems as though cabin fever is held in abeyance by your soldering finger together and fluxing... thanks for sharing!
Seti settings currently for me: 179 blocks of data crunched
16 hr 45' 28" RA
+9� 3' 36" Dec
1.420664063 Ghz
~aa9il
Thu, Jan 11, 2001 (19:12)
#226
Yow! 179 blocks?
I wont say what my piss weak P90 has finally completed.
I guess there is justification for shelling out some
bucks for a 1GHz system. Either that, or hit all the
local garage sales, buy a bunch of P90's and build up
a Beowulf cluster.
While I was at the last ham fest, I saw P90 boards with
CPU -and- memory for less than $50. You can guess what
I payed for mine all those years ago. Sort of like back
in ye olden daze when 386's were being taken over by the
486 and folks spend a couple thousand for that tricked
out 386 that was destined to be a big paperweight for
the desk....
Oh well, progress....
73 de AA9IL
Mike
radio cosmo international
~MarciaH
Thu, Jan 11, 2001 (22:00)
#227
Yup...technology has struck again - I started out on a Commodore which we upgraded to 64! Before that we had to load programs via tape - it HAD no memory. Uh huh...this is my 6th genereation computer is about 10 years... I have a thief to thank for one upgrade...
~MarciaH
Thu, Jan 11, 2001 (22:01)
#228
183 blocks completed now...