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CX2SA > SATDIG 11.02.11 06:04l 676 Lines 22252 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: Spacewalk From International Space Station Will Air On
NASA TV (Clint Bradford)
2. Re: ARISSat-1 - Dumb Question (Bob Bruninga)
3. ARISSat-1 on 145,950 MHz (gu6efb)
4. Re: ARISSat-1 - Dumb Question (Rick Tejera)
5. Re: ARISSat-1 - Dumb Question (Rick Tejera)
6. Re: Spacewalk From International Space Station Will Air On
NASA TV (Edward R. Cole)
7. Re: ARISSAT-1 over ZL (Alan Cresswell)
8. Re: Spacewalk From International Space Station Will Air On
NASA TV (Dale Hershberger)
9. Re: Spacewalk From International Space Station Will Air On
NASA TV (Clint Bradford)
10. Res: Re: Spacewalk From International Space Station Will Air
On NASA TV (Carlos Paoli)
11. ARISSat-1 (Andrew Squires)
12. ARISSat-1 over SE USA (Andrew Glasbrenner)
13. Re: ARISSat-1 (Joseph Armbruster)
14. Re: ARISSat-1 over SE USA (Mark L. Hammond)
15. ARISSat-1 heard .. . . (santanaamt@xxx.xxxx
16. ARISSat-1 heard (santanaamt@xxx.xxxx
17. Re: ARISSat-1 over SE USA (Matt Severin)
----------------------------------------------------------------------
Message: 1
Date: Thu, 10 Feb 2011 15:59:22 -0800
From: Clint Bradford <clintbradford@xxx.xxx>
Subject: [amsat-bb] Re: Spacewalk From International Space Station
Will Air On NASA TV
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Message-ID: <E878BDFE-BF8B-4D57-BB3B-172BCA1C8757@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
Confirming the time ...
February 16, Wednesday
7:45AM EASTERN / 4:45AM PACIFIC
ISS Expedition 26 Russian Spacewalk Coverage
Spacewalk begins at 8:15AM EASTERN / 5:15AM PACIFIC
Johnson Space Center Public and Media Channels
NASA TV: http://tinyurl.com/ARISSat1-deploy
Clint, K6LCS
http://www.worksatellites.com
------------------------------
Message: 2
Date: Thu, 10 Feb 2011 19:17:13 -0500
From: "Bob Bruninga" <bruninga@xxxx.xxx>
Subject: [amsat-bb] Re: ARISSat-1 - Dumb Question
To: "'Rocky Jones'" <orbitjet@xxxxxxx.xxx>, <ko6th_greg@xxxxxxx.xxx>,
<g0mrf@xxx.xxx>, <clintbradford@xxx.xxx>, "'Amsat BB'"
<amsat-bb@xxxxx.xxx>
Message-ID: <007601cbc981$085651b0$1902f510$@xxx>
Content-Type: text/plain; charset="us-ascii"
> a retrograde maneuver will remove ARISSsat from
> the proximity of ISS very very quickly.
It is interesting that any such one-thrust (arm throw) maneuver will then
intersect the ISS exactly one orbit later. In theory that is. But the
difference in drag at that low altitude will usually be enough to have a
safe miss distance on the next and subsequent orbits.
I think that is why most space maneuvers require two burns. One to start a
new orbit (but it will still intersect the original orbit on every orbit.
Then a second burn somewhere else in the orbit to get rid of that
intersecting point?
Bob, WB4APR
> > >> ... Clint. When ARISSAT is released it will stay in the "Plane" of
ISS
> > orbit...they will toss it retrograde meaning in the opposite direction
of
> > the velocity vector and with its slightly lower velocity the orbit will
> > start to decrease...this is done so that very quickly the orbits will
stop
> > being "prox ops" reasonably fast.
> >
> > If so, then I believe as the orbit altitude is reduced, the apparent
> > velocity increases.....(??) which will cause ARISsat-1 to 'move ahead'
of the
> > ISS over a few hours
> >
> > But didn't we say the velocity would be less than the ISS due to the
method
> > of deploying it against the velocity vector ?
> >
>
> Interesting puzzler, eh? From what I have read in the past, I think this
their logic.
>
> What they are trying to do is to separate the orbits of the ISS and
ARISSat as quickly as possible, to avoid the potential for a collision.
Consider the options:
>
> 1. Throw it sideways to the ISS orbit. The result is that twice per
orbit the two spacecraft's paths will cross, side to side. Bad idea.
>
> 2. Throw it ahead of the ISS (faster orbit speed). This will raise the
orbit, slightly, and also make it a bit elliptical (up and down). The
higher orbit makes the satellite go behind the ISS, but the elliptical shape
also means that the orbits will cross every orbit (but out of phase, so they
won't be at the same place when they do). But, then as the ARISSat orbit
decays, they will get closer and closer, potentially getting back to the
same place. Not good, either.
>
> 3. Throw it behind the ISS (slower orbit). As you note, this will lower
the orbit (and make it a bit elliptical), and initially the apogee of the
orbit will intersect that of the ISS. Being in a lower orbit, ARISSat will
move ahead of the ISS, and over time, as the ARISSat orbit decays, the two
will diverge even farther. So, this is the safest.
>
> At least, I think that's the logic. If not, pass me some of that tuna...
>
> Greg KO6TH
------------------------------
Message: 3
Date: Fri, 11 Feb 2011 00:33:06 GMT
From: "gu6efb" <gu6efb@xxxxx.xxx>
Subject: [amsat-bb] ARISSat-1 on 145,950 MHz
To: <amsat-bb@xxxxx.xxx>
Message-ID: <20110211003395.SM11060@xxxx.x.x.xxxx>
Content-Type: text/plain; charset="utf-8"
?
I heard ARISSat-1 on 145,950 MHz at 00:20: UTC in?IN89RK St Andrew's
Guernsey orbit? 70104 of ISS Transmitting both voice and SSTV sounded like
robot mode 36 nice and strong here
73 Keith GU6EFB
------------------------------
Message: 4
Date: Thu, 10 Feb 2011 17:35:37 -0700
From: Rick Tejera <saguaroastro@xxx.xxx>
Subject: [amsat-bb] Re: ARISSat-1 - Dumb Question
To: Bob Bruninga <bruninga@xxxx.xxx>
Cc: "<clintbradford@xxx.xxx>" <clintbradford@xxx.xxx>, Amsat BB
<amsat-bb@xxxxx.xxx>, "<g0mrf@xxx.xxx>" <g0mrf@xxx.xxx>
Message-ID: <F78FE036-743C-462A-B212-DC9148416203@xxx.xxx>
Content-Type: text/plain; charset=us-ascii
Sent from my iPod
Rick Tejera
Editor, SACnews
Saguaro Astronomy Club
www.saguaroastro.org
K7TEJ
On Feb 10, 2011, at 17:17, "Bob Bruninga" <bruninga@xxxx.xxx> wrote:
>> a retrograde maneuver will remove ARISSsat from
>> the proximity of ISS very very quickly.
>
> It is interesting that any such one-thrust (arm throw) maneuver will then
> intersect the ISS exactly one orbit later. In theory that is. But the
> difference in drag at that low altitude will usually be enough to have a
> safe miss distance on the next and subsequent orbits.
>
> I think that is why most space maneuvers require two burns. One to start a
> new orbit (but it will still intersect the original orbit on every orbit.
> Then a second burn somewhere else in the orbit to get rid of that
> intersecting point?
>
> Bob, WB4APR
>
>>>>> ... Clint. When ARISSAT is released it will stay in the "Plane" of
> ISS
>>> orbit...they will toss it retrograde meaning in the opposite direction
> of
>>> the velocity vector and with its slightly lower velocity the orbit will
>>> start to decrease...this is done so that very quickly the orbits will
> stop
>>> being "prox ops" reasonably fast.
>>>
>>> If so, then I believe as the orbit altitude is reduced, the apparent
>>> velocity increases.....(??) which will cause ARISsat-1 to 'move ahead'
> of the
>>> ISS over a few hours
>>>
>>> But didn't we say the velocity would be less than the ISS due to the
> method
>>> of deploying it against the velocity vector ?
>>>
>>
>> Interesting puzzler, eh? From what I have read in the past, I think this
> their logic.
>>
>> What they are trying to do is to separate the orbits of the ISS and
> ARISSat as quickly as possible, to avoid the potential for a collision.
> Consider the options:
>>
>> 1. Throw it sideways to the ISS orbit. The result is that twice per
> orbit the two spacecraft's paths will cross, side to side. Bad idea.
>>
>> 2. Throw it ahead of the ISS (faster orbit speed). This will raise the
> orbit, slightly, and also make it a bit elliptical (up and down). The
> higher orbit makes the satellite go behind the ISS, but the elliptical shape
> also means that the orbits will cross every orbit (but out of phase, so they
> won't be at the same place when they do). But, then as the ARISSat orbit
> decays, they will get closer and closer, potentially getting back to the
> same place. Not good, either.
>>
>> 3. Throw it behind the ISS (slower orbit). As you note, this will lower
> the orbit (and make it a bit elliptical), and initially the apogee of the
> orbit will intersect that of the ISS. Being in a lower orbit, ARISSat will
> move ahead of the ISS, and over time, as the ARISSat orbit decays, the two
> will diverge even farther. So, this is the safest.
>>
>> At least, I think that's the logic. If not, pass me some of that tuna...
>>
>> Greg KO6TH
>
> _______________________________________________
> 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: 5
Date: Thu, 10 Feb 2011 17:51:12 -0700
From: Rick Tejera <saguaroastro@xxx.xxx>
Subject: [amsat-bb] Re: ARISSat-1 - Dumb Question
To: Bob Bruninga <bruninga@xxxx.xxx>
Cc: "<clintbradford@xxx.xxx>" <clintbradford@xxx.xxx>, Amsat BB
<amsat-bb@xxxxx.xxx>, "<g0mrf@xxx.xxx>" <g0mrf@xxx.xxx>
Message-ID: <827804CB-2DC2-4933-9DA5-413DBA181033@xxx.xxx>
Content-Type: text/plain; charset=us-ascii
This time I'll actually type something before hitting send;)
The two burn maneuver is essentially a Hohmann transfer maneuver. The point
of the first burn becomes the new apogee or perigee (depending on the
direction of the burn). The burn will raise or lower the antipodal point
from where the burn occurred. At that point a second burn in the same
direction will bring the point of the first burn to the new level.
But you all probably already knew that:)
If you want to play around with this try this:
http://orbit.medphys.ucl.ac.uk/home.php
Sent from my iPod
Rick Tejera
Editor, SACnews
Saguaro Astronomy Club
www.saguaroastro.org
K7TEJ
On Feb 10, 2011, at 17:17, "Bob Bruninga" <bruninga@xxxx.xxx> wrote:
>> a retrograde maneuver will remove ARISSsat from
>> the proximity of ISS very very quickly.
>
> It is interesting that any such one-thrust (arm throw) maneuver will then
> intersect the ISS exactly one orbit later. In theory that is. But the
> difference in drag at that low altitude will usually be enough to have a
> safe miss distance on the next and subsequent orbits.
>
> I think that is why most space maneuvers require two burns. One to start a
> new orbit (but it will still intersect the original orbit on every orbit.
> Then a second burn somewhere else in the orbit to get rid of that
> intersecting point?
>
> Bob, WB4APR
>
>>>>> ... Clint. When ARISSAT is released it will stay in the "Plane" of
> ISS
>>> orbit...they will toss it retrograde meaning in the opposite direction
> of
>>> the velocity vector and with its slightly lower velocity the orbit will
>>> start to decrease...this is done so that very quickly the orbits will
> stop
>>> being "prox ops" reasonably fast.
>>>
>>> If so, then I believe as the orbit altitude is reduced, the apparent
>>> velocity increases.....(??) which will cause ARISsat-1 to 'move ahead'
> of the
>>> ISS over a few hours
>>w it sideways to the ISS orbit. The result is that twice per
> orbit the two spacecraft's paths will cross, side to side. Bad idea.
>>
>> 2. Throw it ahead of the ISS (faster orbit speed). This will raise the
> orbit, slightly, and also make it a bit elliptical (up and down). The
> higher orbit makes the satellite go behind the ISS, but the elliptical shape
> also means that the orbits will cross every orbit (but out of phase, so they
> won't be at the same place when they do). But, then as the ARISSat orbit
> decays, they will get closer and closer, potentially getting back to the
> same place. Not good, either.
>>
>> 3. Throw it behind the ISS (slower orbit). As you note, this will lower
> the orbit (and make it a bit elliptical), and initially the apogee of the
> orbit will intersect that of the ISS. Being in a lower orbit, ARISSat will
> move ahead of the ISS, and over time, as the ARISSat orbit decays, the two
> will diverge even farther. So, this is the safest.
>>
>> At least, I think that's the logic. If not, pass me some of that tuna...
>>
>> Greg KO6TH
>
> _______________________________________________
> 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: 6
Date: Thu, 10 Feb 2011 16:27:43 -0900
From: "Edward R. Cole" <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Spacewalk From International Space Station
Will Air On NASA TV
To: Clint Bradford <clintbradford@xxx.xxx>, AMSAT BB
<amsat-bb@xxxxx.xxx>
Message-ID: <201102110127.p1B1RhhP092812@xxxxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 02:59 PM 2/10/2011, Clint Bradford wrote:
>Confirming the time ...
>
>February 16, Wednesday
>7:45AM EASTERN / 4:45AM PACIFIC
>ISS Expedition 26 Russian Spacewalk Coverage
>
>Spacewalk begins at 8:15AM EASTERN / 5:15AM PACIFIC
>Johnson Space Center Public and Media Channels
>
>NASA TV: http://tinyurl.com/ARISSat1-deploy
>
>Clint, K6LCS
>http://www.worksatellites.com
>_______________________________________________
>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
OK, asking a silly question but it isn't being launched for six more
days how can someone already copy the signal? Does it have a secret
time machine on board and zapped back from the future? Or is it
possible to pick up the signal form inside the ISS? Did they test it
or something? Or did the scheduled launch get bumped forward?
I told you it was a silly question!
BTW when I go to the tinyurl link a picture D: <206C8E1D204D4598A12837A663E32CC8@xxxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
ARISSAT-1 over ZL at 0103 UTC
Robot 36 picture received from ARISSAT-1 at 0137 UTC - reasonable quality.
Childrens announcements at 0109.
Data announcement at 0110
NEGA 548 minutes.
IHU Temperature +29 Degrees C.
Control panel temperature +26 degrees C
Battery voltage 27.93 volts.
Battery current is -209ma
Alan
ZL2BX
------------------------------
Message: 8
Date: Thu, 10 Feb 2011 16:45:35 -0900
From: Dale Hershberger <daleh@xxxxxx.xxx>
Subject: [amsat-bb] Re: Spacewalk From International Space Station
Will Air On NASA TV
To: "Edward R. Cole" <kl7uw@xxxxxxxxx.xxx>
Cc: amsat-bbs <amsat-bb@xxxxx.xxx>
Message-ID: <4D5494BF.10108@xxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 2/10/2011 4:27 PM, Edward R. Cole wrote:
> At 02:59 PM 2/10/2011, Clint Bradford wrote:
>> Confirming the time ...
>>
>> February 16, Wednesday
>> 7:45AM EASTERN / 4:45AM PACIFIC
>> ISS Expedition 26 Russian Spacewalk Coverage
>>
>> Spacewalk begins at 8:15AM EASTERN / 5:15AM PACIFIC
>> Johnson Space Center Public and Media Channels
>>
>> NASA TV: http://tinyurl.com/ARISSat1-deploy
>>
>> Clint, K6LCS
>> http://www.worksatellites.com
>> _______________________________________________
>> 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
>
> OK, asking a silly question but it isn't being launched for six more
> days how can someone already copy the signal? Does it have a secret
> time machine on board and zapped back from the future? Or is it
> possible to pick up the signal form inside the ISS? Did they test it
> or something? Or did the scheduled launch get bumped forward?
>
> I told you it was a silly question!
>
> BTW when I go to the tinyurl link a picture blips for a second and
> then it tells me it is for NASA employees and not for the public.
>
> Another geek e-mail?>>>delete<<<
>
>
>
> 73, Ed - KL7UW, WD2XSH/45
> ======================================
> BP40IQ 500 KHz - 10-GHz www.kl7uw.com
> EME: 144-1.4kw*, 432-100w*, 1296-testing*, 3400-winter?
> DUBUS Magazine USA Rep dubususa@xxxxxxx.xxx
> ======================================
> *temp not in service
> _______________________________________________
> 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
>
Ed,
This was scheduled. They connected to an external antenna to do some
checks prior to the actual launch on the 16th...
Dale/KL7XJ
--a silly question!
BTW when I go to the tinyurl link a picture blips for a second and
then it tells me it is for NASA employees and not for the public.
Another geek e-mail? >>>delete<<<
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 144-1.4kw*, 432-100w*, 1296-testing*, 3400-winter?
DUBUS Magazine USA Rep dubususa@xxxxxxx.xxx
======================================
*temp not in service
------------------------------
Message: 11
Date: Fri, 11 Feb 2011 13:42:12 +1100
From: Andrew Squires <asquires@xxxxxxx.xxx.xx>
Subject: [amsat-bb] ARISSat-1
To: amsat-bb@xxxxx.xxx
Message-ID: <2FFCB2F5-5ADA-4493-B3CE-8F1B58EBE06A@xxxxxxx.xxx.xx>
Content-Type: text/plain; charset=us-ascii
Heard Horsham Australia at 0235z 146.950 IC-92AD Quarter wave whip.
73 Andy
VK3AS
------------------------------
Message: 12
Date: Thu, 10 Feb 2011 22:25:42 -0500 (GMT-05:00)
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] ARISSat-1 over SE USA
To: amsat-bb <amsat-bb@xxxxx.xxx>
Message-ID:
<18860638.1297394742896.JavaMail.root@xxxxxxxxxxxxx.xxx.xx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
It was on during the 10PM EST pass, although not continuously. I recorded it
via SDR and will try to decode this evening.
73, Drew KO4MA
------------------------------
Message: 13
Date: Thu, 10 Feb 2011 22:36:43 -0500
From: Joseph Armbruster <josepharmbruster@xxxxx.xxx>
Subject: [amsat-bb] Re: ARISSat-1
To: Andrew Squires <asquires@xxxxxxx.xxx.xx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <67887707-DE6E-43FC-B248-237391EA7C16@xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Heard in Orlando Florida, 0330z 145.9186, using a TH-F6A and an arrow.
On Feb 10, 2011, at 9:42 PM, Andrew Squires wrote:
> Heard Horsham Australia at 0235z 146.950 IC-92AD Quarter wave whip.
> 73 Andy
> VK3AS
>
> _______________________________________________
> 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: 14
Date: Thu, 10 Feb 2011 22:39:56 -0500
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] Re: ARISSat-1 over SE USA
To: amsat-bb <amsat-bb@xxxxx.xxx>
Message-ID: <6Tfx1g00T56cfur05Tg1Tb@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Ditto!
I was surprised to see it going off and on...not sufficient to print any
telem yet.
73,
Mark N8MH
At 10:25 PM 2/10/2011 -0500, you wrote:
>It was on during the 10PM EST pass, although not continuously. I recorded
it via SDR and will try to decode this evening.
>
>73, Drew KO4MA
>
>
>_______________________________________________
>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: 15
Date: Thu, 10 Feb 2011 22:43:13 -0500
From: santanaamt@xxx.xxx
Subject: [amsat-bb] ARISSat-1 heard .. . .
To: sarex@xxxxx.xxxx amsat-bb@xxxxx.xxx
Cc: kp4jrs@xxxxxxx.xxx
Message-ID: <8CD97B4F1DCA2D5-1A1C-79A1@xxxxxxxxxxxx.xxxxxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
My friend Jose - KP4JRS got to hear part of the kids message on a ISS pass
at 23:25 UTC here in the Caribbean!
Keep radios tuned!
Angel - WP3GW
------------------------------
Message: 16
Date: Thu, 10 Feb 2011 22:53:35 -0500
From: santanaamt@xxx.xxx
Subject: [amsat-bb] ARISSat-1 heard
To: sarex@xxxxx.xxxx amsat-bb@xxxxx.xxx
Cc: kp4jrs@xxxxxxx.xxx
Message-ID: <8CD97B66477B1E6-1A1C-7AEF@xxxxxxxxxxxx.xxxxxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Sorry it is suppose to say @ 0335 UTC, but here it is at 23:25 or 11:25pm.
But the hype is on!
Angel - GW
------------------------------
Message: 17
Date: Thu, 10 Feb 2011 22:54:38 -0500
From: Matt Severin <mtseverin@xxxxx.xxx>
Subject: [amsat-bb] Re: ARISSat-1 over SE USA
To: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Cc: amsat-bb <amsat-bbt going off and on...not sufficient to print any
> telem yet.
>
> 73,
>
> Mark N8MH
>
> At 10:25 PM 2/10/2011 -0500, you wrote:
> >It was on during the 10PM EST pass, although not continuously. I recorded
> it via SDR and will try to decode this evening.
> >
> >73, Drew KO4MA
> >
> >
> >_______________________________________________
> >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-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 6, Issue 92
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