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FRA1PR > AMSAT 24.02.13 17:58l 515 Lines 16611 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Orbitron on Windows 7 (H?kan H)
2. ISS communications glitch (Ian MacFarquhar)
3. Re: ISS communications glitch (Stefan Wagener)
4. 2.4GHz broadband router on satellite? (James French)
5. Walter Maxwell, W2DU (SK): (i8cvs)
6. Re: Close encounters of the Asteroidal Kind
(Vince Fiscus, KB7ADL)
7. DANDE launch (Ronald Cox)
8. Re: DANDE launch (Stefan Wagener)
9. Re: DANDE launch (Trevor .)
----------------------------------------------------------------------
Message: 1
Date: Tue, 19 Feb 2013 21:28:08 +0100
From: H?kan H <sm7wsj@xxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Orbitron on Windows 7
Message-ID: <C3739F6B7B53457696E1CD6BDB4C7443@xxxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hello!
I run Orbitron on a XP machine with very good result. Problem is when i
try
to run it on a Win 7 laptop it rejects to close down. I remember last year
there where some writing about problem with this combination.
Any good result out there?
73 Hakan SM7WSJ
------------------------------
Message: 2
Date: Tue, 19 Feb 2013 19:22:46 -0400
From: Ian MacFarquhar <ian@xxxxxxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] ISS communications glitch
Message-ID: <51240946.20607@xxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I believe the current Commander of the Space Station is a Canadian, Col
Chris Hatfield. He has been doing a large number of school contacts
during his mission .
Regards and 73,
Ian MacFarquhar VE9IM
AMSAT LM1970
1st Vice President
Radio Amateurs of Canada
------------------------------
Message: 3
Date: Tue, 19 Feb 2013 20:39:42 -0600
From: Stefan Wagener <wageners@xxxxx.xxx>
To: Ian MacFarquhar <ian@xxxxxxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: ISS communications glitch
Message-ID:
<CAKu8kHBxb7jPbGjnD-WGvEa2aFmg_qsX7=aC27GXCtors4zH8Q@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi Ian,
Chris Hadfield will take over as commander once Ford, Novitsky and
Tarelkin
finish their mission in March. See NASA ISS crew webpage for further
information.
Stefan, VE4NSA
On Tue, Feb 19, 2013 at 5:22 PM, Ian MacFarquhar <ian@xxxxxxxxxxxxx.xxx>wro
te:
> I believe the current Commander of the Space Station is a Canadian, Col
> Chris Hatfield. He has been doing a large number of school contacts during
> his mission .
> Regards and 73,
> Ian MacFarquhar VE9IM
> AMSAT LM1970
> 1st Vice President
> Radio Amateurs of Canada
> ______________________________**_________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings:
http://amsat.org/mailman/**listinfo/amsat-bb<http://amsat.org/mailman/listi
nfo
/amsat-bb>
>
------------------------------
Message: 4
Date: Tue, 19 Feb 2013 10:12:29 -0500
From: James French <w8iss1@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] 2.4GHz broadband router on satellite?
Message-ID: <1361286749.2530.11.camel@xxxxxx>
Content-Type: text/plain; charset="UTF-8"
What are the possibilities of building a satellite that uses a Linksys
WRT54GL router with a modified DD-wrt or HSMM-Mesh software as a store
and forward BBS, to route a received request from one station to another
station, or even to connect to a on board networked camera to receive
images?
What kind of uplink power would be needed from the home station?
How fast could the speed(s) get theoretically?
How big would the antenna have to be on the craft and for the ground
station to even be able to do this adequately?
Would the doppler be too much to even consider this?
Would the space environment be too harsh for something like this?
This is just something I was thinking about this morning and thought I
would toss it out.
James W8ISS
------------------------------
Message: 5
Date: Wed, 20 Feb 2013 12:22:58 +0100
From: "i8cvs" <domenico.i8cvs@xxx.xx>
To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Walter Maxwell, W2DU (SK):
Message-ID: <000201ce0f5c$ebb2e220$0501a8c0@xxxxxx>
Content-Type: text/plain; charset="Windows-1252"
Hi All,
Walter Maxwell, W2DU (SK):
from The ARRL Letter on July 12, 2012
Walter Maxwell, W2DU (SK):
M. Walter Maxwell, W2DU, died July 3 at his home in DeLand, Florida, of
natural causes. He was 93. Maxwell was best known in the Amateur Radio
realm
for his ground-breaking series of articles, "Another Look at Reflections."
Published in QST in seven parts from 1973-1976, the series explained in
plain English concepts such as line loss, SWR, baluns and antenna tuners.
The articles were later compiled into a book, Reflections: Transmission
Lines and Antennas, which included additional material on matching
networks,
antennas and the Smith Chart. It was first published by the ARRL in 1990
and
went through several editions. Later editions were published by CQ
Communications.
Source: The ARRL Letter
---------------------------------------------------------------------------
-
Additional note from i8CVS
Hi All
It is very sad for me to know that Walter Maxell, W2DU died. I was in
touch
with him by email for many years and he was very friendly and plenty of
explanations to me about my transmission lines problems.
I missed a gread friend.
The material published into the W2DU book " Reflections, Transmission
Lines and Antennas ", is actually downloadble from the following source:
http://web.archive.org/web/20090412045404/http://w2du.com/Reflections2.html
To know more about the W2DU technical life read also:
http://www.qcwa.org/w2du-sk.htm
73" de
i8CVS Domenico
------------------------------
Message: 6
Date: Wed, 20 Feb 2013 08:42:44 -0700
From: "Vince Fiscus, KB7ADL" <vlfiscus@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Close encounters of the Asteroidal Kind
Message-ID: <5.2.1.1.2.20130220084118.00c4beb8@xxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
http://www.jpl.nasa.gov/news/news.php?release=2013-063
NASA Releases Radar Movie of Asteroid 2012 DA14
Jet Propulsion Laboratory
February 19, 2013
[Image]
This collage of 72 individual radar-generated images of asteroid 2012
DA14 was created using data from NASA's 230-foot (70-meter) Deep Space
Network antenna at Goldstone, Calif. Image credit: NASA/JPL-Caltech
An initial sequence of radar images of asteroid 2012 DA14 was obtained
on the night of Feb. 15/16, 2013, by NASA scientists using the 230-foot
(70-meter) Deep Space Network antenna at Goldstone, Calif. Each of the
72 frames required 320 seconds of data collection by the Goldstone radar.
The observations were made as the asteroid was moving away from Earth.
The asteroid's distance from the radar dish increased from 74,000 miles
(120,000 kilometers) to 195,000 miles (314,000 kilometers). The
resolution is 13 feet (four meters) per pixel. The images span close to
eight hours and clearly show an elongated object undergoing roughly one
full rotation. The images suggest that the asteroid has a long axis of
about 130 feet (40 meters). The radar observations were led by
scientists Lance Benner and Marina Brozovic of NASA's Jet Propulsion
Laboratory, Pasadena, Calif. Additional Goldstone radar observations are
scheduled on February 18, 19 and 20.
Radar is a powerful technique for studying an asteroid's size, shape,
rotation state, surface features and surface roughness, and for
improving calculations of its orbit. Radar measurements of asteroid
distances and velocities often enable computation of asteroid orbits
much further into the future than if radar observations weren't available.
NASA detects, tracks and characterizes asteroids and comets passing
close to Earth using both ground- and space-based telescopes. The
Near-Earth Object Observations Program, commonly called "Spaceguard,"
discovers these objects, characterizes a subset of them, and plots their
orbits to determine if any could be potentially hazardous to our planet.
JPL manages the Near-Earth Object Program Office for NASA's Science
Mission Directorate in Washington. JPL is a division of the California
Institute of Technology in Pasadena.
More information about asteroids and near-Earth objects is at:
http://www.jpl.nasa.gov/asteroidwatch . More information about asteroid
radar research is at: http://echo.jpl.nasa.gov/ . More information about
the Deep Space Network is at: http://deepspace.jpl.nasa.gov/dsn .
DC Agle 818-393-9011
Jet Propulsion Laboratory, Pasadena, Calif.
agle@xxx.xxxx.xxx
------------------------------
Message: 7
Date: Wed, 20 Feb 2013 04:04:08 -0700
From: Ronald Cox <w9kfb1@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] DANDE launch
Message-ID: <DBC098EC-074D-48D9-9F4B-35B5F539FB51@xxx.xxx>
Content-Type: text/plain; charset=us-ascii
Hi All,
On Feb18th I visited 4 Labs at UC Boulder as a part of Lockheed-Martin's
Engineering Explorer Post program (www.engpost.org) that meets every other
Tuesday evening from September to May each year. I am sponsoring two young
men without fathers as members of this Post. What was interesting to me
and
potentially other AMSAT members was that they are getting ready to launch
a
satellite named DANDE that will transmit in the 430 MHz Amateur Radio band
using a "modified AX.25" packet radio protocol for the beacon and data. In
the control room I saw the TS-2000 they are using for communications. The
control room and all other activites for this satellite are located in the
Colorado Space Grant Labs on the University of Colorado's Bolder Campus in
the Discovery Learning Center. It is my understanding that a launch of
this
satellite could be as early as next month (March) as the hardware is now
through testing and being prepared for launch on an experimental
Orbital-Science vehicle. !
I was told that the orbit would be very elliptical and that the DANDE was
designed for low earth orbit, but this orbit will take it through the Van
Allen belts, so the DANDE could have a more limited life as a result.
For more info on DANDE I recommend the following sites:
http://dande.colorado.edu/files/DANDE_AGU_POSTER.PNG
http://dande.colorado.edu/files/pilinski_CEDAR_poster_2008_v4pr2.pdf
http://spacegrant.colorado.edu
http://spacegrant.colorado.edu/boulderstudents/boulderprojects/dande
http://www.ofcm.gov/nswp-sp/pdf/NSWP-SP-1995-scan.pdf
http://spacegrant.colorado.edu/dande-mission
Ron, W9KFB AMSAT LM-0185
Greenwood Village, CO
------------------------------
Message: 8
Date: Wed, 20 Feb 2013 11:59:52 -0600
From: Stefan Wagener <wageners@xxxxx.xxx>
To: Ronald Cox <w9kfb1@xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: DANDE launch
Message-ID:
<CAKu8kHAHDkD=QM-98_-=UT1o2m0c0ZLB9uNsDOkpJoECJFLB3Q@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Please see the IARU Frequency coordination request/status
...."Updated documentation received 03/08/2009. The group have been unable
to change their hardware to use a coordinated frequency proposed by the
panel. They will therefore operate on 436.750MHz under an experimental
license from the FCC...."
Stefan, VE4NSA
On Wed, Feb 20, 2013 at 5:04 AM, Ronald Cox <w9kfb1@xxx.xxx> wrote:
> Hi All,
>
> On Feb18th I visited 4 Labs at UC Boulder as a part of Lockheed-Martin's
> Engineering Explorer Post program (www.engpost.org) that meets every
> other Tuesday evening from September to May each year. I am sponsoring two
> young men without fathers as members of this Post. What was interesting to
> me and potentially other AMSAT members was that they are getting ready to
> launch a satellite named DANDE that will transmit in the 430 MHz Amateur
> Radio band using a "modified AX.25" packet radio protocol for the beacon
> and data. In the control room I saw the TS-2000 they are using for
> communications. The control room and all other activites for this satellite
> are located in the Colorado Space Grant Labs on the University of
> Colorado's Bolder Campus in the Discovery Learning Center. It is my
> understanding that a launch of this satellite could be as early as next
> month (March) as the hardware is now through testing and being prepared for
> launch on an experimental Orbital-Science vehicle. !
> I was told that the orbit would be very elliptical and that the DANDE was
> designed for low earth orbit, but this orbit will take it through the Van
> Allen belts, so the DANDE could have a more limited life as a result.
>
> For more info on DANDE I recommend the following sites:
>
> http://dande.colorado.edu/files/DANDE_AGU_POSTER.PNG
>
> http://dande.colorado.edu/files/pilinski_CEDAR_poster_2008_v4pr2.pdf
>
> http://spacegrant.colorado.edu
>
> http://spacegrant.colorado.edu/boulderstudents/boulderprojects/dande
>
> http://www.ofcm.gov/nswp-sp/pdf/NSWP-SP-1995-scan.pdf
>
> http://spacegrant.colorado.edu/dande-mission
>
> Ron, W9KFB AMSAT LM-0185
> Greenwood Village, CO
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 9
Date: Wed, 20 Feb 2013 19:37:56 +0000 (GMT)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: DANDE launch
Message-ID:
<1361389076.19695.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Great news Ron. I thought DANDE were flying on a SpaceX flight so I'd
assumed a very low ISS type orbit, interesting to hear they are going out
to
Van Allen belt.
73 Trevor M5AKA
--- On Wed, 20/2/13, Ronald Cox <w9kfb1@xxx.xxx> wrote:
> Hi All,
>
> On Feb18th I visited 4 Labs at UC Boulder as a part of
> Lockheed-Martin's Engineering Explorer Post program
> (www.engpost.org) that meets every other Tuesday evening
> from September to May each year. I am sponsoring two young
> men without fathers as members of this Post. What was
> interesting to me and potentially other AMSAT members was
> that they are getting ready to launch a satellite named
> DANDE that will transmit in the 430 MHz Amateur Radio band
> using a "modified AX.25" packet radio protocol for the
> beacon and data. In the control room I saw the TS-2000 they
> are using for communications. The control room and all other
> activites for this satellite are located in the Colorado
> Space Grant Labs on the University of Colorado's Bolder
> Campus in the Discovery Learning Center. It is my
> understanding that a launch of this satellite could be as
> early as next month (March) as the hardware is now through
> testing and being prepared for launch on an
> experimental? Orbital-Science vehicle. !
> I was told that the orbit would be very elliptical and that
> the DANDE was designed for low earth orbit, but this orbit
> will take it through the Van Allen belts, so the DANDE could
> have a more limited life as a result.
>
> For more info on DANDE I recommend the following sites:
>
> http://dande.colorado.edu/files/DANDE_AGU_POSTER.PNG
>
> http://dande.colorado.edu/files/pilinski_CEDAR_poster_2008_v4pr2.pdf
>
> http://spacegrant.colorado.edu
>
> http://spacegrant.colorado.edu/boulderstudents/boulderprojects/dande
>
> http://www.ofcm.gov/nswp-sp/pdf/NSWP-SP-1995-scan.pdf
>
> http://spacegrant.colorado.edu/dande-mission
>
> Ron, W9KFB AMSAT LM-0185
> Greenwood Village, CO
>
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx.
> Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur
> satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
_______________________________________________
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 8, Issue 54
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