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CX2SA > SATDIG 28.04.12 21:08l 605 Lines 23134 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Updated Coverage for NASA/SpaceX Launch and Mission to
Station (Clint Bradford)
2. AO-51-SO-50 (Kevin Deane)
3. SATCHAT NET! (Vincent, K9TSU)
4. Amateur Radio in the UK during the Olympics (Clive G7SVI)
5. Re: Amateur Radio in the UK during the Olympics (John Wright)
6. ZW2WEB weather ballon ICARO (Roland Zurmely)
7. USNA Party Balloon Success! (Bob Bruninga )
8. Why do I get notices of cancellation (Michael J Finn)
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Message: 1
Date: Fri, 27 Apr 2012 14:25:03 -0700
From: Clint Bradford <clintbradford@xxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Updated Coverage for NASA/SpaceX Launch and
Mission to Station
Message-ID: <F73B4947-0C7D-4CB4-A2D6-2E301195ACB6@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
MEDIA ADVISORY: M12-078
UPDATED COVERAGE FOR NASA/SPACEX LAUNCH AND MISSION TO STATION
CAPE CANAVERAL, Fla. -- The second SpaceX demonstration launch for
NASA's Commercial Orbital Transportation Services (COTS) has been
rescheduled for a liftoff on Monday, May 7. Liftoff of the Falcon 9
rocket carrying a Dragon capsule will occur from Space Launch Complex
40 at the Cape Canaveral Air Force Station in Florida. There is a
single instantaneous launch opportunity at 9:38 a.m. EDT.
NASA Television launch commentary from Cape Canaveral begins at 8 a.m.
During the flight, SpaceX's Dragon capsule will conduct a series of
check-out procedures to test and prove its systems, including the
capability to rendezvous and berth with the International Space
Station. The primary objectives for the flight include a flyby of the
space station at a distance of approximately 1.5 miles to validate
the operation of sensors and flight systems necessary for a safe
rendezvous and approach.
The spacecraft also will demonstrate the ability to abort the
rendezvous. Once these capabilities are successfully proven, the
Dragon will be cleared to berth with the space station.
FALCON 9 LAUNCH PAD PHOTO OPPORTUNITY
Saturday, May 5 (L-2 days): A photo opportunity of the Falcon 9 rocket
and Dragon capsule on the launch pad will be available for the news
media. Spokespeople from SpaceX will be available to answer
questions.
Media will depart from NASA's Kennedy Space Center Press Site by
government bus at 9:15 a.m. for Space Launch Complex 40. Media will
be returned at approximately 11 a.m. SpaceX security regulations
require that media attending this event be U.S. citizens.
REMOTE CAMERA SETUPS
Sunday, May 6 (L-1 day): Media will be able to establish
sound-activated remote cameras at the launch pad. The location is
within Space Launch Complex-40 on the east side of the pad outside
the perimeter fence. Media who want to participate in remote camera
setup will depart from Kennedy's Press Site by government bus at
10:30 a.m. Only photographers establishing remote cameras can
participate in this activity. SpaceX security regulations require
that media participating in this activity be U.S. citizens.
PRELAUNCH AND POST-LAUNCH NEWS CONFERENCES
Sunday, May 6 (L-1 day): The prelaunch news conference for the
NASA/SpaceX launch will be held at the Kennedy Press Site at 1 p.m.
NASA Television will provide live and streaming Internet coverage.
Monday, May 7, (Launch Day): A postlaunch news conference will be held
at Kennedy at approximately noon.
Media representative can participate in the news conference in- person
at Kennedy or via a phone bridge by calling NASA's Johnson Space
Center newsroom at 11:45 a.m. at 281-483-5111.
Audio of the prelaunch and postlaunch news conferences also will be
carried on the NASA "V" circuits, directly accessible by dialing
321-867-1220, 1240, 1260 or 7135. The briefings will be streamed live
on the agency's website.
NASA TV LAUNCH COVERAGE
Monday, April 30 (L-0 day): NASA TV live coverage begins at 8 a.m. and
concludes at approximately 10:30 a.m.
On launch day, "mission audio," the launch conductor's countdown
activities without NASA TV launch commentary, will be carried on
321-867-7135 starting at 8 a.m. Launch information also will be
available on local amateur VHF radio frequency 146.940 MHz, heard
within Brevard County.
NASA TV MISSION COVERAGE
Tuesday, May 8 (Flight Day 2): An update on the Dragon's flight during
the daily "ISS Update" program from NASA's Johnson Space Center airs
at 11 a.m.
Wednesday, May 9 (Flight Day 3): Live coverage from NASA's Johnson
Space Center mission control in Houston as the Dragon spacecraft
performs its fly-under of ISS to test its systems begins at 2:30 a.m.
and will continue until the Dragon passes out of the vicinity of the
station.
A news briefing will be held following the activities.
Thursday, May 10 (Flight Day 4): Live coverage of the rendezvous and
berthing of the Dragon spacecraft to the station begins at 2 a.m. and
will continue through the capture and berthing of the Dragon to the
station's Harmony node. A news briefing will be held once Dragon is
secured to the ISS.
Friday, May 11: Live coverage of the hatch opening and entry of the
Dragon spacecraft includes a ceremony during which the ISS crew will
mark the occasion.
Thursday, May 24: A news briefing at Johnson will preview the
following day's unberthing and splashdown of the Dragon spacecraft.
Friday, May 25: Live coverage of the unberthing, re-entry and
splashdown of the Dragon spacecraft in the Pacific Ocean. Specific
times of coverage will be provided at a later date.
NEWS MEDIA LAUNCH VIEWING
Monday, May 7 (Launch day): News media may view the launch from the
Kennedy Press Site. A sign-up sheet will be available in the newsroom
for those media representatives wanting to cover the launch from the
NASA Causeway or from the roof of the Complex 39 Launch Control
Center. These are primarily photo locations as there are no
facilities available. Buses will depart from the Press Site parking
lot at 8:15 a.m.
KENNEDY MEDIA CREDENTIALING
Media who want to attend the prelaunch events, including the prelaunch
news conference and launch, may request accreditation online at:
https://media.ksc.nasa.gov
The deadline for U.S. media to apply for launch accreditation is May
4. The deadline for international media to apply has passed.
Journalists who have already been approved for accreditation do not
need to reapply.
The Gate 2 Pass and Identification Building on State Road 3, Merritt
Island, will be open to pick up press credentials on the following
schedule:
Friday, May 4: noon - 4 p.m.
Saturday, May 5: 7:30 a.m. - 1 p.m.
Sunday, May 6: 9 a.m. - noon
Monday, May 7: 3:30 - 8:30 a.m.
News media credentials will be valid for mission activities from
launch through splashdown at both the Kennedy Space Center and
Johnson Space Center.
KENNEDY PRESS SITE - HOURS OF OPERATION
Friday, May 4: 8 a.m. - 4:30 p.m.
Saturday, May 5: 8 a.m. - 4 p.m.
Sunday, May 6: 9 a.m. - 4 p.m.
Monday, May 7: 4 a.m. - 4:30 p.m.
Media badges will be valid for access to the Kennedy Press Site
through Gate 2 on State Road 3, Merritt Island; Gate 3 on State Road
405, located east of the Kennedy Space Center Visitor Complex; and
Gate 4 on State Road 3, south of County Road 402 near the entrance to
the Canaveral National Seashore.
For further information about media accreditation, contact Jennifer
Horner at 321-867-6598.
For more information about the NASA/SpaceX launch, contact the Kennedy
Press Site at 321-867-2468 or visit:
http://www.nasa.gov/kennedy
JOHNSON MEDIA ACCREDITATION
Media who are credentialed with badges at Kennedy for launch
activities will have their badges honored at Johnson for the duration
of the SpaceX mission. Please contact the Johnson newsroom for work
space information.
International media wanting access only to Johnson must submit the
required documentation for badging by Monday, April 30. U.S. media
wanting access only to Johnson must submit a request for badging by
Friday, May 4. Media who have already been approved for accreditation
do not need to reapply.
For mission information, contact the Johnson newsroom at 281-483-5111
or visit:
http://www.nasa.gov/johnson
For NASA TV downlink information, schedules and links to streaming
video, visit:
http://www.nasa.gov/ntv
For up-to-date SpaceX mission information and a schedule of NASA TV
coverage, visit:
http://www.nasa.gov/spacex
For further information on NASA's COTS program, go to:
http://www.nasa.gov/cots
-end-
Clint Bradford
clintbradford@xxx.xxx
------------------------------
Message: 2
Date: Fri, 27 Apr 2012 20:45:33 -0700
From: Kevin Deane <summit496@xxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] AO-51-SO-50
Message-ID: <COL107-W6296D6E5212B2E52D253B3832A0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
I remember someone saying something about the old earlybird AO-51 passess
and that now all we have at night is SO-50... I was thinking of staying up
late this weekend to see if there might be some earlybirds on the 50???
I do not have all that great a station and no rotator as of yet but if there
is some activity that would be great, considering the time difference I
might meet some new grids/people and if not I always enjoy saying hello to
those I have worked many times before! :)
Kevin
KF7MYK
------------------------------
Message: 3
Date: Sat, 28 Apr 2012 00:55:12 -0500
From: "Vincent, K9TSU" <k9tsu@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] SATCHAT NET!
Message-ID:
<CAP4t4uS-xt2DgNGR+-PZJ1XYoej5uzw9_Q0RQ=Ez-EEncKuG5Q@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
HI all, I want to take a few minutes and bore you with some changes to the
Satchat I host on the *AMSAT* EchoLink server.
Changes:
Well, it's been a successful idea! A great place for the sat. ops. to talk
to eachother. I have began questioning if it being a directed net slows it
down. I think it does. So, from now on, it will just be a round table. No
net control will be used. Feel free to connect at the 1st and 3rd Saturdays
of the month at 7PM-8:30PM *CENTRAL*, AS USUAL. I will always be there, but
it would be faster and easier to just have a round table wiht no net
control station.
I will be "net manager" for the chat, though. I will continue to handle the
'logistics' of the net, such as ARISS contact skeds during the times...etc.
Thanks, all! Everyone is welcome on the Sat-Chat group!!
--
*Vince Waelti, K9TSU*
WX9MCS/R Control Operator
Midwest SSTRC Spotter # MW314
Green County ARES/SKYWARN
Winnebago County ARES/SKYWARN
------------------------------
Message: 4
Date: Sat, 28 Apr 2012 10:07:18 +0100
From: "Clive G7SVI" <g7svi@xxxxxxx.xx.xx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Amateur Radio in the UK during the Olympics
Message-ID: <001501cd251e$50027f80$f0077e80$@xxxxxxx.xx.xx>
Content-Type: text/plain; charset="us-ascii"
Hi All
For any of you in the AMSAT world interested in what the planned
restrictions are or visiting during the Olympics, here are links to the
details
I'm affected as I live close to the sailing but it will be fun listening in
J
This link contains downloadable pdf files detailing the restrictions.
http://licensing.ofcom.org.uk/radiocommunication-licences/amateur-radio/ar_s
pectrum_use/
These are useful as they provide maps for each location. It is not just 70cm
but also microwave frequencies as well.
These are not the final restrictions though. Ofcom (our regulator) have
issue a consultation paper on the restrictions which can be found here:
http://stakeholders.ofcom.org.uk/consultations/undueinterference-olympics-20
12/summary
73s and have fun on the birds
Clive G7SVI
------------------------------
Message: 5
Date: Sat, 28 Apr 2012 11:07:17 +0100
From: John Wright <ham@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Amateur Radio in the UK during the Olympics
Message-ID: <0M5cCK-1Rzh541sjY-00yDYp@xxxxxxxx.xxxxxxxxxxxx.xx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 10:07 28/04/2012, you wrote:
>Hi All
>
>For any of you in the AMSAT world interested in what the planned
>restrictions are or visiting during the Olympics, here are links to the
>details
>
>I'm affected as I live close to the sailing but it will be fun listening in
>J
>
>This link contains downloadable pdf files detailing the restrictions.
>
>http://licensing.ofcom.org.uk/radiocommunication-licences/amateur-radio/ar_s
>pectrum_use/
We do need to remember of course that we are "secondary" users in a
lot of our bands, so governmental use obviously takes priority!
The sat down links of course are another thing altogether, can't see
how they can get over that!
------------------------------
Message: 6
Date: Sat, 28 Apr 2012 04:54:29 -0700 (PDT)
From: Roland Zurmely <py4zbz@xxxxx.xxx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ZW2WEB weather ballon ICARO
Message-ID:
<1335614069.29662.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
An weather balloon will be released from Meteorological Research Institute
(IPMet) of University of S?o Paulo State (UNESP) at Bauru campus and will
carry up to an altitude of about 25km, a radiosonde and a beacon (voice
transmitter), with the special callsign ZW2WEB. The radiosonde will transmit
to the ground? station all data ??of pressure, temperature, humidity, speed,
wind direction and location. A radioamateur station will uplink this
information which will be relayed by the beacon. Any radioamateur station,
equipped with a receiver in the VHF frequency of 144.330 MHz will be able to
receive the information and build a log with the meteorological data and,
therefore, be able to identify layers of the atmosphere and the transition
between them: troposphere, tropopause and stratosphere.?
http://www.ipmet.unesp.br/icaro/?
73 de Roland.
------------------------------
Message: 7
Date: Sat, 28 Apr 2012 11:55:29 -0400 (EDT)
From: "Bob Bruninga " <bruninga@xxxx.xxx>
To: aprssig@xxxx.xxx
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] USNA Party Balloon Success!
Message-ID: <201204281555.022194@xxx.xxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Party Balloon success!...
Everything possible went wrong! A disaster of monstrous proportions. But
finally got it all working and just wanted it gone! We released it about
1545 which means we missed getting off the academy before the afternoon's
formal parade and lost 30 minutes going out gate 1 and 3/4 of the way around
the yard through Annapolis traffic. But everything worked perfectly after
release. The balloon was just about making land over Kent Island 8 miles
away before we even got onto Rt 50.
With Friday afternoon beach traffic we were chasing the whole time.
Thomasson was bragging about his altitude prediction when it reached his
6500' altitude as we crossed the Bay bridge. We were still 16 miles behind
it at Easton with
Fick making time in all the traffic as the driver. Several minutes later
Thomasson ate crow as it passed through 8000' and was speeding up to 45 MPH.
Headed south on 50 towards Easton we were still 16 miles behind it as it
overflew Easton. Then we noticed the altitude descending. It was down to
6500 feet...
Since we were beyond the Choptank (last water body) and descending slowly we
decided not to send the cut-loose command and ride it down. When we got in
about 4 miles range we began to see the wireless camera again and could see
chicken coops below. At 2000' we turned on a farm road and told the other
car to go to the next road and turn. It passed over us and we got a solid
visual.
Radioed to Mids in other car and they got a visual. Ballester and Garcia
got to within 100 yards at touchtown.
We did send the cut command at about 1000 feet just to see if it worked, and
it was acknowledged but the payload remained attached. It landed in a field
and the bright red balloons flopping about 10 feet high in the breeze made
it a walk in the park to get to. The release had worked, but the parachute
had gotten entangled in the one balloon that had burst and so they came down
together.
Cleary one of the 5 balloons had burst at 8000' and started the descent.
With the balloon chards hanging down where the parachute was also hanging
down, it is clear that entanglement was certain (bad planning). Next time,
we will
widely separate the balloons from the payload and chute to avoid this.
But all systems worked well and gave great proof of concept for the next
one. The payload was about 320 grams (0.6 lb)consisting of two Lithium 9v
batteries a complete APRS digipeater and command/control/telemetry plus a
2.4 GHz wireless camera. Mission duration was under 2 hours, distance about
50 miles just slightly within the attention span of a student ;-)
You can see the track on the web page http://aprs.fi and enter the callsign
W3ADO-11 and then ask for the appropriate number of hours of history. The
balloon landed at 2123z or 1723 EDT after a 98 minute flight.
Our joy and enthusiasm were destroyed, however, after a parking lot formed
on the bay bridge returning. All lanes were blocked for several hours..
doubling the time of the entire mission. Yuk!
LESSONS LEARNED:
Having now flown two party-balloon missions, I am happy with the results
compared to Latex balloons. The missions are very different profiles, but
they meet our educational goals quite well. Here are some thoughts. I am
not a balloon expert (only my 3rd attempt in 20 years) so take these
opinions with your own grains of salt.
1) 3' dia party balloon (unfilled. On line) cost under $2 each. Making a 5
balloon launch about $10 for the balloons.
2) Mylar Balloons have a high mass to lift ratio so these are all LOW
ALTITUDE missions. Even with zero payload, the MAX altitude is around
25,000' where the full balloon can only support its own weight no matter how
many balloons.
3) OUr first mission was an extremely small 50 gram payload with HF
oscillator and some CW telemetry, attemting a 10 day around the world
flight. Since it went over the atlantic toward africa, who knows what
happened to it. You could only year the milliwatt XMTR within line-of sight
(about 100 miles)...
4) Helium loss through Mylar appeared to be around 1% per day compared to
higher rates through latex.
5) Mylar balloons are an order of magnitude less vulnerable to UV rays which
will almost always burst laytex after several hours exposure at high altitude.
6) Mylar are fixed volume. THey get to a fixed height, where they are
over-pressure and remain there (unless they burst).
7) Below 10,000' temperatures are not an issue with electronics compared to
the -60C temps for the typical high altitude flights.
8) I use clear plastc bottles for the enclosure and the temp inside remains
high (solar heating). Even at 8000' the temp never got below about 40C.
We must use water proof containers because of all the bay and waters around.
9) This second mission used a full APRS system, wtih GPS and 2.4 GHz
wireless camera using the Byonics MT-TT4 all-in-one APRS circuit board all
in under 0.6 lbs including waterproof botttle container and chute.
10) WIth these mylar constant-pressure designs, extreme care must be used in
underfilling each balloon exactly the same. Any balloon that is slightly
higher than the others will rise to a HIGHER Pressure and will be the first
to burst.
The jury is still out as to whether a long duration mission is possile.
Ours will always go immediately to the Atlantic and at the low altitude,
will take days to reach anyone in Europe (Our last went headed for africa
where no one was listening).
** A ballast release mechanism is reuired for long duration. We attempted a
clever block of Ice (sublimation mass loss), but dont know if it worked,
because no one reported hearing it in Africa?)
11) The amount of over pressure at equilibrium altitude is equal to the
amount of excess lift. So it is a difficult balance. Too little lift and
you need an extremely large launch area. Too much and you are sure to burst.
12) IN fact, with a modest excess-lift on our intentional shout duration
mission, maybe there will always be a FIRST TO POP as in our case. This was
perfect though. The loss of one balloon gave an almost balanced up and down
profile . No need for a chute.
13) The bright red multiple balloons (all full, except the one shreaded one)
make for a highly visible descent and recovery. If we had cut the payload
loose, the chances of finding a clear plastic bottle with nothing around it
but a tiny chute woiuld have been 1% of the success of finding 4 waving
balloons!
14) Observing this, we thought about maybe using multiple string cutters for
our next mission to control descent by cutting loose balloons. But cutting
loose only eliminates about half the mass as letting one burst. When it
bursts, it loses lift, but the mass (nearly half the total lift) remains
with the payload making descent better.
SO, maybe the plan next time will be to slightly overfill one balloon to
assure a first-to-pop, and therefore have an automatic descent! Still we
will have a payload cutter just to make sure we can release before the
Atlantic!
FINALLY, The abuse these party balloons can tolerate are an order of
magnitude greater than Latex. We launched in a 20 MPH wind! After walking
all 5 balloons from the classroom, across a road and through a narrow
chain-link fence gate in that 20 MPH wind (3 times!) they survived. Just
prior to release, I noticed it was still transmitting all 3 packets at a 10
second rate! We had to bring it all back indoors, cut loose the payload, go
reprogram it, and then re-assemble and go do it all again!
With multiple balloons, we fill a spare, so that if we busrt one, we can
quickly tie in a replacemet in the field. If they all survive getting to
the launch point, then we release the spare to see exatly where the winds
are going, so we can find the best spot to clear the 100' high light posts
surrounding the field.
Photos of this last mission will eventyally make it to the
http://aprs.org/balloons.html page.
But right now, I'm burned out.
Bob, Wb4APR
------------------------------
Message: 8
Date: Sat, 28 Apr 2012 11:25:20 -0700
From: Michael J Finn <wb7qxu@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Why do I get notices of cancellation
Message-ID: <20120428.112625.1665.198702@xxxxxxxxx.xxx.xxxx.xxx>
Content-Type: text/plain; charset=us-ascii
____________________________________________________________
57 Year Old Looks 27
Local Woman Reveals Wrinkle Secret That Has Doctors Angry.
http://thirdpartyoffers.juno.com/TGL3141/4f9c366f33833ce5eeest02duc
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 7, Issue 135
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