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CX2SA > SATDIG 09.09.12 20:03l 654 Lines 18087 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. PROITERES (H?kan H)
2. Re: PROITERES heard (Mike Rupprecht)
3. Re: sstv (Gordon JC Pearce)
4. Re: Camera on an antenna (Robert McGwier)
5. Re: Camera on an antenna (Gordon JC Pearce)
6. Re: PROITERES Launch (Trevor .)
7. Re: Camera on an antenna (Joe)
8. e: Satellite technical question (Nick Pugh)
9. Re: PROITERES heard (N0JY)
10. Re: PROITERES heard (Alan P. Biddle)
11. Re: e: Satellite technical question (Robert Bruninga)
12. Re: e: Satellite technical question (Nick Pugh)
----------------------------------------------------------------------
Message: 1
Date: Sun, 9 Sep 2012 11:20:17 +0200
From: H?kan H <sm7wsj@xxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] PROITERES
Message-ID: <5DFD552F1284428D8F40EA77DB38435A@xxxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hello!
Also very fine copy on the satellite here in Sweden.( Stable signal)
Congratulations to the team. 73 de Hakan SM7WSJ
------------------------------
Message: 2
Date: Sun, 9 Sep 2012 11:22:18 +0200
From: "Mike Rupprecht" <mail@xxxxxxxxxxxxxx.xx>
To: "'Matthias Bopp'" <matthias.bopp@xxx.xx>
Cc: "'Tetsu\(JA0CAW\)'" <ja0caw@xxxx.xxx.xx.xx>, amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: PROITERES heard
Message-ID: <000301cd8e6c$9c1386f0$d43a94d0$@xx>
Content-Type: text/plain; charset="Windows-1252"
09:08 UTC
s2 00 00 00 00
proiteres s1 ed 81 87 00 s2 00 00 00 00
proiteres s1 ed 7e 89 00 s2 00 00 00 00
proiteres s1 ec 79 91 00 s2 00 00 00 00
proiteres s1 ec 7d 91 00 s2 00 00 00 00
proiteres s1 ec 76 93 00 s2 00 00 00 00
proiteres s1 ed 77 92 00 s2 00 00 00 00
proiteres s1 ec 7b 8c 00 s2 00 00 00 00
73 Mike
DK3WN
-----Urspr?ngliche Nachricht-----
Von: Matthias Bopp [mailto:matthias.bopp@xxx.xxx
Gesendet: Sonntag, 9. September 2012 09:49
An: 'Mike Rupprecht'
Cc: 'Tetsu(JA0CAW)'
Betreff: AW: [amsat-bb] PROITERES hear
Excellent Mike, could not hear anything here (1? Elevation only) but will
check during the next pass).
Regards
Matthias
www.dd1us.de
-----Urspr?ngliche Nachricht-----
Von: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx Im
Auftrag von Mike Rupprecht
Gesendet: Sonntag, 9. September 2012 09:38
An: amsat-bb@xxxxx.xxx
Cc: 'Tetsu(JA0CAW)'
Betreff: [amsat-bb] PROITERES hear
07:36 UTC very low 3 deg pass
s1 ec 77 91 00
proiteres
s1 ec 78 91 00
73 Mike
DK3WN
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------------------------------
Message: 3
Date: Sun, 09 Sep 2012 10:25:21 +0100
From: Gordon JC Pearce <gordonjcp@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: sstv
Message-ID: <504C6081.2080604@xxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 09/09/12 02:03, jerry keeton wrote:
> I have in the past received as many as 2 images from seeds II on one pass
. Don't know if it's still operational or not .
There are some passes in sunlight over here later today, so I'll take a
listen.
Which SSTV mode was it using?
--
Gordon JC Pearce MM0YEQ
------------------------------
Message: 4
Date: Sun, 9 Sep 2012 05:47:07 -0400
From: Robert McGwier <rwmcgwier@xxxxx.xxx>
To: Gordon JC Pearce <gordonjcp@xxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Camera on an antenna
Message-ID:
<CA+K5gzdCqYrvCshKQgPH3qxWcnMHK07P4fgghKJ0GdwObOMeAg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
K2UYH has a camera mounted on his dish. I love the felt tip marker on his
monitor showing where the moon should be!
On Sep 9, 2012 4:56 AM, "Gordon JC Pearce" <gordonjcp@xxxx.xxx> wrote:
> On 08/09/12 20:13, Gordon JC Pearce wrote:
>
>> On 08/09/12 18:22, James Luhn wrote:
>>
>>> Please don't ya'll laugh too hard at me. Has anyone ever mounted a
>>> camera on a beam? Now I am not trying to see AO40, but I would like to
>>> simply double check the location of my beam for eme. If anyone has
>>> mounted a camera on a beam, I would be interested in what you used. Yes,
>>> I know all about beam width vs the moon. I just hate to call CQ with my
>>> beams pointed to the ground due to some Murphy type of failure.
>>>
>>
>> I'd probably use something like an el-cheapo outdoor wifi CCTV camera,
>> and feed 12V up the tower (well, you're going to have that for your
>> preamp *anyway*, right?). If you go down the route of
>> expensive-unless-secondhand "proper" CCTV cameras you can get a range of
>> lenses, including zoom lenses.
>>
>> If you want to centre up on the moon, consider screwing a telephoto
>> converter on.
>>
>>
>
> --
> Gordon JC Pearce MM0YEQ
> ______________________________**_________________
> 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/listinfo
/amsat-bb>
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------------------------------
Message: 5
Date: Sun, 09 Sep 2012 10:49:43 +0100
From: Gordon JC Pearce <gordonjcp@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Camera on an antenna
Message-ID: <504C6637.60505@xxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 09/09/12 10:47, Robert McGwier wrote:
> K2UYH has a camera mounted on his dish. I love the felt tip marker on
> his monitor showing where the moon should be!
Now, could you do something like use a capture card and OpenCV to use
the camera to aim the dish by observation rather than by prediction?
Could you track the ISS with such a device? If you could I wouldn't
want to get in the way of the rotator and beam as it swings. It would
probably bat you into LEO!
--
Gordon JC Pearce MM0YEQ
------------------------------
Message: 6
Date: Sun, 9 Sep 2012 11:10:45 +0100 (BST)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: PROITERES Launch
Message-ID:
<1347185445.2210.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
The PROITERES paper presented at the 32nd International Electric Propulsion
Conference contains more information on the spacecraft.
http://erps.spacegrant.org/uploads/images/images/iepc_articledownload_1988-200
7/2011index/IEPC-2011-035.pdf
73 Trevor M5AKA
------------------------------
Message: 7
Date: Sun, 09 Sep 2012 08:04:14 -0500
From: Joe <nss@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Camera on an antenna
Message-ID: <504C93CE.5040201@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
The ONLY problem with this method, is, Daytime while the moon can be
seen, it is usually very difficult on a camera, and then clouds,,,,, day
or night they kind of block the view,
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 9/9/2012 4:49 AM, Gordon JC Pearce wrote:
> On 09/09/12 10:47, Robert McGwier wrote:
>> K2UYH has a camera mounted on his dish. I love the felt tip marker on
>> his monitor showing where the moon should be!
>
> Now, could you do something like use a capture card and OpenCV to use
> the camera to aim the dish by observation rather than by prediction?
>
> Could you track the ISS with such a device? If you could I wouldn't
> want to get in the way of the rotator and beam as it swings. It would
> probably bat you into LEO!
>
------------------------------
Message: 8
Date: Sun, 9 Sep 2012 10:06:34 -0500
From: "Nick Pugh" <quadpugh@xxxxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] e: Satellite technical question
Message-ID: <01f601cd8e9c$b4b4c2c0$1e1e4840$@xxx>
Content-Type: text/plain; charset="iso-8859-1"
e: Satellite technical question
Assume a cubesat with a monopole ? wave antenna at 400 mhz. The satellite is
in full sun with a 500km orbit. What is the antenna temperature in full sun
and in eclipse?
TNX in advance
Nick CAPE Team
------------------------------
Message: 9
Date: Sun, 09 Sep 2012 11:00:17 -0500
From: N0JY <n0jy@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: PROITERES heard
Message-ID: <504CBD11.4040506@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
After several minutes of silence, I finally figured out I am dyslexic
when it comes to reading frequencies (I was listening on 437.845 instead
of 437.485!) so I only got two frames my first pass.
15:52 UTC
PROITERES S1 EE 7B 93 00 S2 00 00 00 00
15:53 UTC
PROITERES S1 ED 73 86 00 S2 00 00 00 00
73,
Jerry
N0JY
On 9/9/2012 4:22 AM, Mike Rupprecht wrote:
> 09:08 UTC
>
> s2 00 00 00 00
> proiteres s1 ed 81 87 00 s2 00 00 00 00
> proiteres s1 ed 7e 89 00 s2 00 00 00 00
> proiteres s1 ec 79 91 00 s2 00 00 00 00
> proiteres s1 ec 7d 91 00 s2 00 00 00 00
> proiteres s1 ec 76 93 00 s2 00 00 00 00
> proiteres s1 ed 77 92 00 s2 00 00 00 00
> proiteres s1 ec 7b 8c 00 s2 00 00 00 00
>
> 73 Mike
> DK3WN
>
> -----Urspr?ngliche Nachricht-----
> Von: Matthias Bopp [mailto:matthias.bopp@xxx.xxx
> Gesendet: Sonntag, 9. September 2012 09:49
> An: 'Mike Rupprecht'
> Cc: 'Tetsu(JA0CAW)'
> Betreff: AW: [amsat-bb] PROITERES hear
>
> Excellent Mike, could not hear anything here (1? Elevation only) but will
> check during the next pass).
>
> Regards
>
> Matthias
>
> www.dd1us.de
>
>
> -----Urspr?ngliche Nachricht-----
> Von: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx Im
> Auftrag von Mike Rupprecht
> Gesendet: Sonntag, 9. September 2012 09:38
> An: amsat-bb@xxxxx.xxx
> Cc: 'Tetsu(JA0CAW)'
> Betreff: [amsat-bb] PROITERES hear
>
> 07:36 UTC very low 3 deg pass
>
>
>
> s1 ec 77 91 00
>
> proiteres
>
> s1 ec 78 91 00
>
>
>
> 73 Mike
>
> DK3WN
>
> _______________________________________________
> 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
>
>
______________________________________________________________________________
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______________________________________________________________________________
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>
------------------------------
Message: 10
Date: Sun, 9 Sep 2012 11:12:48 -0500
From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
To: <n0jy@xxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: PROITERES heard
Message-ID: <655E8C41A716432D8231013AF470D27E@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Jerry,
Don't worry. I read somewhere that five out two hams are dyslexic.
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of N0JY
Sent: Sunday, September 09, 2012 11:00 AM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: PROITERES heard
After several minutes of silence, I finally figured out I am dyslexic
when it comes to reading frequencies (I was listening on 437.845 instead
of 437.485!) so I only got two frames my first pass.
15:52 UTC
PROITERES S1 EE 7B 93 00 S2 00 00 00 00
15:53 UTC
PROITERES S1 ED 73 86 00 S2 00 00 00 00
73,
Jerry
N0JY
On 9/9/2012 4:22 AM, Mike Rupprecht wrote:
> 09:08 UTC
>
> s2 00 00 00 00
> proiteres s1 ed 81 87 00 s2 00 00 00 00
> proiteres s1 ed 7e 89 00 s2 00 00 00 00
> proiteres s1 ec 79 91 00 s2 00 00 00 00
> proiteres s1 ec 7d 91 00 s2 00 00 00 00
> proiteres s1 ec 76 93 00 s2 00 00 00 00
> proiteres s1 ed 77 92 00 s2 00 00 00 00
> proiteres s1 ec 7b 8c 00 s2 00 00 00 00
>
> 73 Mike
> DK3WN
>
> -----Urspr?ngliche Nachricht-----
> Von: Matthias Bopp [mailto:matthias.bopp@xxx.xxx
> Gesendet: Sonntag, 9. September 2012 09:49
> An: 'Mike Rupprecht'
> Cc: 'Tetsu(JA0CAW)'
> Betreff: AW: [amsat-bb] PROITERES hear
>
> Excellent Mike, could not hear anything here (1? Elevation only) but will
> check during the next pass).
>
> Regards
>
> Matthias
>
> www.dd1us.de
>
>
> -----Urspr?ngliche Nachricht-----
> Von: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx Im
> Auftrag von Mike Rupprecht
> Gesendet: Sonntag, 9. September 2012 09:38
> An: amsat-bb@xxxxx.xxx
> Cc: 'Tetsu(JA0CAW)'
> Betreff: [amsat-bb] PROITERES hear
>
> 07:36 UTC very low 3 deg pass
>
>
>
> s1 ec 77 91 00
>
> proiteres
>
> s1 ec 78 91 00
>
>
>
> 73 Mike
>
> DK3WN
>
> _______________________________________________
> 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
>
>
____________________________________________________________________________
________
> Use the link below to report this message as spam.
> https://lavabit.com/apps/teacher?sig=3474343&key=2332048119
>
____________________________________________________________________________
________
>
_______________________________________________
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: Sun, 9 Sep 2012 12:26:47 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: Nick Pugh <quadpugh@xxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: e: Satellite technical question
Message-ID:
<CALdCfNJUbqn=4dOGczhNo9=bfYk62Az4ABqmgb8o9wxV1ywakA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
> Assume a cubesat with a monopole ? wave antenna at 400 mhz.
>The satellite is in full sun with a 500km orbit. What is the antenna
> temperature in full sun and in eclipse?
It depends entirely on its color (surface properties). If it black it will
get to about 55 farenheight in the sun and to about very cold in the dark.
If it is white, it will get to about -60 F in the sun (Notice that is MINUS
60) and very cold in the dark. If it is clean shiny aluminum, it could get
to +250 F in the sun and very cold in the dark all assuming they have no
other way to conduct away heat.
Those are steady state hot temps for the surfaces given. I dont remember
the cold temps, though they will all reach the same very cold temps if they
never see the sun. Notice that these are steady state. A metal sphere
with these colors going in and out of eclipse will never reach these
extremes because of their thermal mass that cannot get that hot in 60
minutes and cool down that much in 35 minutes of dark.
Our basically black PCsat (solar panels mounted to the aluminum body with
good conductivity only got to about room temperature in the sun and no
colder than about freezing (32 F) in the dark every 90 minutes.
But it was a shock to us when we designed a flip-out solar panel for a
cubesat that is exposed on both sides to space. It gets to almost boiling
on the sun side and down to about -70F in the dark... EVERY orbit.
SO, I assumed that a thin tiny whip antenna could not conduct very much
heat to the spacecraft, so its extremes will be high. But a piece of wire
can easily handle these temps. But any solder joint that cannot
communicate heat to/from the rest of the spacecraft might have problems.
This is an off-the-cuff answer. Doing thermal in space is a real ART!
Good luck.
Bob, Wb4aPR
>
>
>
> TNX in advance
>
>
>
> Nick CAPE Team
>
>
>
> _______________________________________________
> 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: 12
Date: Sun, 9 Sep 2012 13:15:18 -0500
From: "Nick Pugh" <quadpugh@xxxxxxxxx.xxx>
To: "'Nick Pugh'" <quadpugh@xxxxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: e: Satellite technical question
Message-ID: <021e01cd8eb7$123bca00$36b35e00$@xxx>
Content-Type: text/plain; charset="iso-8859-1"
I am sorry I did not mean the physical temperature What I wanted is the
equivalent noise temperature.
Thanks for those who replied
nick
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Nick Pugh
Sent: Sunday, September 09, 2012 10:07 AM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] e: Satellite technical question
e: Satellite technical question
Assume a cubesat with a monopole ? wave antenna at 400 mhz. The satellite is
in full sun with a 500km orbit. What is the antenna temperature in full sun
and in eclipse?
TNX in advance
Nick CAPE Team
_______________________________________________
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 7, Issue 293
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