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CX2SA > SATDIG 15.09.09 21:04l 616 Lines 17861 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Geosyro orbit. (Joe)
2. Re: Geosyro orbit. (Ken Ernandes)
3. Cubesat launch Sept. 23rd (Bruce Robertson)
4. Re: Geosyro orbit. (Joe)
5. Re: Geosyro orbit. (Alan VE4YZ)
6. Re: Geosyro orbit. (Alan VE4YZ)
7. Re: Geosyro orbit. (Alan VE4YZ)
8. Re: Cubesat launch Sept. 23rd (Graham Shirville)
9. Re: Cubesat launch Sept. 23rd (Wouter Jan Ubbels)
10. Re: Cubesat launch Sept. 23rd (i8cvs)
11. Re: Cubesat launch Sept. 23rd (Wouter Jan Ubbels)
----------------------------------------------------------------------
Message: 1
Date: Tue, 15 Sep 2009 11:07:04 -0500
From: Joe <nss@xxx.xxx>
Subject: [amsat-bb] Geosyro orbit.
To: BB <amsat-bb@xxxxx.xxx>
Message-ID: <4AAFBBA8.4040309@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi All,
I have a couple of questions, How big is the earth from a geosyncronous
(sp?) orbit.
Like the Moon from Earth is roughly 1/2 a degree.
What is the earth from a geo orbit? anyone know?
Joe WB9SBD
------------------------------
Message: 2
Date: Tue, 15 Sep 2009 12:26:28 -0400 (EDT)
From: Ken Ernandes <n2wwd@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Geosyro orbit.
To: Joe <nss@xxx.xxx>, BB <amsat-bb@xxxxx.xxx>
Message-ID:
<18079980.1253031988552.JavaMail.root@xxxxxxxxxxxxx.xxx.xx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
The Earth is approximately 17.4-deg in diameter (8.7-deg radius) from
Geosynchronous Earth Orbit (GEO).
73, Ken N2WWD
-----Original Message-----
>From: Joe <nss@xxx.xxx>
>Sent: Sep 15, 2009 12:07 PM
>To: BB <amsat-bb@xxxxx.xxx>
>Subject: [amsat-bb] Geosyro orbit.
>
>Hi All,
>
>I have a couple of questions, How big is the earth from a geosyncronous
>(sp?) orbit.
>
>Like the Moon from Earth is roughly 1/2 a degree.
>
>What is the earth from a geo orbit? anyone know?
>
>Joe WB9SBD
>_______________________________________________
>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: 3
Date: Tue, 15 Sep 2009 13:35:34 -0300
From: Bruce Robertson <ve9qrp@xxxxx.xxx>
Subject: [amsat-bb] Cubesat launch Sept. 23rd
To: AMSAT-BB <amsat-bb@xxxxx.xxx>
Message-ID:
<49657a760909150935p548478bcsaf8aecf4e67fda52@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
According to this report
http://www.hindu.com/2009/09/13/stories/2009091360321100.htm PSLV-C14,
which will carry cubesats, is to launch on 23rd of Sept.
UWE 2 (A AX25 and CW downlink on 437.385 MHz)
SwissCube 1 (A downlink frequency of 437.505MHz)
BeeSat ( 70cm Transmit power: 0.5 W GMSK at 9600/4800 bits/s)
ITU-pSat (radio info?)
Bob mentioned KySat is going up pretty soon, too. Does anyone know if
it will have the capability to be configured as a FM transponder as
was planned a while back?
73, Bruce
VE9QRP
------------------------------
Message: 4
Date: Tue, 15 Sep 2009 11:41:34 -0500
From: Joe <nss@xxx.xxx>
Subject: [amsat-bb] Re: Geosyro orbit.
To: Ken Ernandes <n2wwd@xxxxxxxxxx.xxx>
Cc: BB <amsat-bb@xxxxx.xxx>
Message-ID: <4AAFC3BE.6090302@xxx.xxx>
Content-Type: text/plain; charset=us-ascii; format=flowed
Thanks all that answered.
Reason asking is as many of you already know on Dish Network TV, they
have this channel called Dish Earth, Basically it's a nice color camera
looking back at the earth. it's full screen in size so I guess about
a 20 degree field of view.
Part that is cool is to check it as the day goes by watching the phase
of the earth change as the sun changes position.
And now thatwe are getting close to equinox the sun actually passes
behind the earth at about 2:30 AM.
I taped it last nigh to see what happens as it passes behind, pretty
cool looks almost like the last phases of a total solar eclipse with a
diamond ring effect etc.
And you can see just as it passes behind the gain on the camera opens
wide open and lits of i'm assuming digital noise appears. or if not
noise I'm thinking damaged pixles for they never change position.
But the bending of the sunlight is cool too the earth remains as a thin
line around the horizion, way cool, and amazing how stable the orbit
seems to be. if there is any wobble due to an elliptical orbit I can't
see it, it must be extremely small.
Too bad we cant convince these geo bird people to share some of their
power, imagine how wide of a linear transponder we could have for the
same power this one camera thats running 24/7 has to consume. YIKES!
Joe WB9SBD
Ken Ernandes wrote:
>The Earth is approximately 17.4-deg in diameter (8.7-deg radius) from
Geosynchronous Earth Orbit (GEO).
>
>73, Ken N2WWD
>
>
>
>
>-----Original Message-----
>
>
>>From: Joe <nss@xxx.xxx>
>>Sent: Sep 15, 2009 12:07 PM
>>To: BB <amsat-bb@xxxxx.xxx>
>>Subject: [amsat-bb] Geosyro orbit.
>>
>>Hi All,
>>
>>I have a couple of questions, How big is the earth from a geosyncronous
>>(sp?) orbit.
>>
>>Like the Moon from Earth is roughly 1/2 a degree.
>>
>>What is the earth from a geo orbit? anyone know?
>>
>>Joe WB9SBD
>>_______________________________________________
>>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
>
>
>------------------------------------------------------------------------
>
>
>No virus found in this incoming message.
>Checked by AVG - www.avg.com
>Version: 8.5.412 / Virus Database: 270.13.99/2372 - Release Date: 09/15/09
05:59:00
>
>
>
------------------------------
Message: 5
Date: Tue, 15 Sep 2009 11:42:28 -0500
From: "Alan VE4YZ" <ve4yz@xxx.xxx>
Subject: [amsat-bb] Re: Geosyro orbit.
To: "'Joe'" <nss@xxx.xxx>, "'BB'" <amsat-bb@xxxxx.xxx>
Message-ID: <13DED72194DD4E7A9A509BA8E8AFA311@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
I can't believe I couldn't Google this, so
Earth Radius at equator = 6378 km
GeoSynch orbit = aprox 36000 km above sea level or aprox 30,0000 from center
of earth
Angle = 2TAN 6378/30000 = aprox 24 degrees.
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Joe
Sent: September 15, 2009 11:07 AM
To: BB
Subject: [amsat-bb] Geosyro orbit.
Hi All,
I have a couple of questions, How big is the earth from a geosyncronous
(sp?) orbit.
Like the Moon from Earth is roughly 1/2 a degree.
What is the earth from a geo orbit? anyone know?
Joe WB9SBD
_______________________________________________
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: Tue, 15 Sep 2009 11:47:59 -0500
From: "Alan VE4YZ" <ve4yz@xxx.xxx>
Subject: [amsat-bb] Re: Geosyro orbit.
To: "'Joe'" <nss@xxx.xxx>, "'BB'" <amsat-bb@xxxxx.xxx>
Message-ID: <8373D5D029E04573905176B27BEB6D78@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Duh, distance from center of earth is 42000km ( add, don't subtract dummy
)
So it is 2TAN 6378/42000 = about 17 degrees.
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Alan VE4YZ
Sent: September 15, 2009 11:42 AM
To: 'Joe'; 'BB'
Subject: [amsat-bb] Re: Geosyro orbit.
I can't believe I couldn't Google this, so
Earth Radius at equator = 6378 km
GeoSynch orbit = aprox 36000 km above sea level or aprox 30,0000 from center
of earth
Angle = 2TAN 6378/30000 = aprox 24 degrees.
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Joe
Sent: September 15, 2009 11:07 AM
To: BB
Subject: [amsat-bb] Geosyro orbit.
Hi All,
I have a couple of questions, How big is the earth from a geosyncronous
(sp?) orbit.
Like the Moon from Earth is roughly 1/2 a degree.
What is the earth from a geo orbit? anyone know?
Joe WB9SBD
_______________________________________________
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
------------------------------
Message: 7
Date: Tue, 15 Sep 2009 11:51:19 -0500
From: "Alan VE4YZ" <ve4yz@xxx.xxx>
Subject: [amsat-bb] Re: Geosyro orbit.
To: "'Ken Ernandes'" <n2wwd@xxxxxxxxxx.xxx>, "'Joe'" <nss@xxx.xxx>,
"'BB'" <amsat-bb@xxxxx.xxx>
Message-ID: <0FCD5AC646644E37B9F3E2C71CABBD4D@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Ah Hen, , you beat me fair and square and got the correct answer the first
time too :-)
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Ken Ernandes
Sent: September 15, 2009 11:26 AM
To: Joe; BB
Subject: [amsat-bb] Re: Geosyro orbit.
The Earth is approximately 17.4-deg in diameter (8.7-deg radius) from
Geosynchronous Earth Orbit (GEO).
73, Ken N2WWD
-----Original Message-----
>From: Joe <nss@xxx.xxx>
>Sent: Sep 15, 2009 12:07 PM
>To: BB <amsat-bb@xxxxx.xxx>
>Subject: [amsat-bb] Geosyro orbit.
>
>Hi All,
>
>I have a couple of questions, How big is the earth from a
>geosyncronous
>(sp?) orbit.
>
>Like the Moon from Earth is roughly 1/2 a degree.
>
>What is the earth from a geo orbit? anyone know?
>
>Joe WB9SBD
>_______________________________________________
>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
------------------------------
Message: 8
Date: Tue, 15 Sep 2009 17:59:58 +0100
From: "Graham Shirville" <g.shirville@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Cubesat launch Sept. 23rd
To: "Bruce Robertson" <ve9qrp@xxxxx.xxx>, "AMSAT-BB"
<amsat-bb@xxxxx.xxx>
Message-ID: <690087B9386849B4AAF095F2AD516DC4@xxxxxxx.xxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi Bruce,
BEESat reported to be on 436.000MHz - not coordinated by IARU
ITUpSat has a 100mW 70cm CW telemetry beacon coordinated by IARU on
437.325MHz
see www.amsat.org.uk/iaru
73
Graham
G3VZV
----- Original Message -----
From: "Bruce Robertson" <ve9qrp@xxxxx.xxx>
To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Sent: Tuesday, September 15, 2009 5:35 PM
Subject: [amsat-bb] Cubesat launch Sept. 23rd
> According to this report
> http://www.hindu.com/2009/09/13/stories/2009091360321100.htm PSLV-C14,
> which will carry cubesats, is to launch on 23rd of Sept.
> UWE 2 (A AX25 and CW downlink on 437.385 MHz)
> SwissCube 1 (A downlink frequency of 437.505MHz)
> BeeSat ( 70cm Transmit power: 0.5 W GMSK at 9600/4800 bits/s)
> ITU-pSat (radio info?)
>
> Bob mentioned KySat is going up pretty soon, too. Does anyone know if
> it will have the capability to be configured as a FM transponder as
> was planned a while back?
>
> 73, Bruce
> VE9QRP
> _______________________________________________
> 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: Tue, 15 Sep 2009 19:02:42 +0200
From: Wouter Jan Ubbels <w.j.ubbels@xxxxxxxx.xx>
Subject: [amsat-bb] Re: Cubesat launch Sept. 23rd
To: "Amsat-Bb@xxxxx. Org" <amsat-bb@xxxxx.xxx>
Message-ID:
<af4c9b1b0909151002h1854c8cfoe476f9d4aa39e37@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi Bruce,
yes, PSLV-C14 will carry ISIlaunch01, a cluster launch of four 1U CubeSats.
For all frequency info, please refer to
http://www.isispace.nl/index.php?option=com_content&task=view&id=80&Itemid=84
and the websites of the satellite teams.
Integration progress can be followed on:
http://blog.isilaunch.com/
And of course, all help is appreciated in early operations tracking and
assigning the correct TLE's to the different objects as soon as possible!
We will try to keep everyone posted, more info will be posted as it becomes
available.
73 on behalf of the ISIlaunch team,
Wouter Jan Ubbels PE4WJ
------------------------------
Message: 10
Date: Tue, 15 Sep 2009 19:46:54 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
Subject: [amsat-bb] Re: Cubesat launch Sept. 23rd
To: "Wouter Jan Ubbels" <w.j.ubbels@xxxxxxxx.xx>, "Amsat-Bb@xxxxx.
Org" <amsat-bb@xxxxx.xxx>
Message-ID: <001001ca362c$83f03960$0201a8c0@xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Wouter, PE4WJ
What about DELFI - C3 for the promised amateur use ?
73" de
i8CVS Domenico
----- Original Message -----
From: "Wouter Jan Ubbels" <w.j.ubbels@xxxxxxxx.xx>
To: "Amsat-Bb@xxxxx. Org" <amsat-bb@xxxxx.xxx>
Sent: Tuesday, September 15, 2009 7:02 PM
Subject: [amsat-bb] Re: Cubesat launch Sept. 23rd
> Hi Bruce,
>
> yes, PSLV-C14 will carry ISIlaunch01, a cluster launch of four 1U
CubeSats.
> For all frequency info, please refer to
>
>
http://www.isispace.nl/index.php?option=com_content&task=view&id=80&Itemid=8
4
>
> and the websites of the satellite teams.
>
> Integration progress can be followed on:
>
> http://blog.isilaunch.com/
>
> And of course, all help is appreciated in early operations tracking and
> assigning the correct TLE's to the different objects as soon as possible!
>
> We will try to keep everyone posted, more info will be posted as it
becomes
> available.
>
> 73 on behalf of the ISIlaunch team,
>
> Wouter Jan Ubbels PE4WJ
> _______________________________________________
> 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: 11
Date: Tue, 15 Sep 2009 20:16:31 +0200
From: Wouter Jan Ubbels <w.j.ubbels@xxxxxxxx.xx>
Subject: [amsat-bb] Re: Cubesat launch Sept. 23rd
To: i8cvs <domenico.i8cvs@xxx.xx>
Cc: "Amsat-Bb@xxxxx. Org" <amsat-bb@xxxxx.xxx>
Message-ID:
<af4c9b1b0909151116m2b530bbco5a8616b933121ecb@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi Domenico,
Delfi-C3 has been in amateur transponder mode from the end of July 2008 till
mid-October 2008, after which we sadly have had to conclude that the
transponder had failed. We do not know the exact failure cause, but it is a
failure in the receive section of the transponder. Sad but true, it is the
only component to have failed on the satellite so far... :( everything else
is running ok apart from some minor quirks like regular downlink drop outs
which are related to the databus and are not critical. I have only been able
to make a handful QSO's on the transponder myself, would have loved to make
many more!
After this sad conclusion, we have decided to switch the satellite back to
science mode, a mode in which it transmits payload data on 145.870 1200Bd
AX.25 BPSK to at least give it a useful life which will hopefully last for
many more years to come!
73,
Wouter Jan Ubbels PE4WJ
On Tue, Sep 15, 2009 at 7:46 PM, i8cvs <domenico.i8cvs@xxx.xx> wrote:
> Hi Wouter, PE4WJ
>
> What about DELFI - C3 for the promised amateur use ?
>
> 73" de
>
> i8CVS Domenico
>
> ----- Original Message -----
> From: "Wouter Jan Ubbels" <w.j.ubbels@xxxxxxxx.xx>
> To: "Amsat-Bb@xxxxx. Org" <amsat-bb@xxxxx.xxx>
> Sent: Tuesday, September 15, 2009 7:02 PM
> Subject: [amsat-bb] Re: Cubesat launch Sept. 23rd
>
>
> > Hi Bruce,
> >
> > yes, PSLV-C14 will carry ISIlaunch01, a cluster launch of four 1U
> CubeSats.
> > For all frequency info, please refer to
> >
> >
>
> http://www.isispace.nl/index.php?option=com_content&task=view&id=80&Itemid=8
> 4
> >
> > and the websites of the satellite teams.
> >
> > Integration progress can be followed on:
> >
> > http://blog.isilaunch.com/
> >
> > And of course, all help is appreciated in early operations tracking and
> > assigning the correct TLE's to the different objects as soon as possible!
> >
> > We will try to keep everyone posted, more info will be posted as it
> becomes
> > available.
> >
> > 73 on behalf of the ISIlaunch team,
> >
> > Wouter Jan Ubbels PE4WJ
> > _______________________________________________
> > 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 4, Issue 472
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