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CX2SA > SATDIG 01.05.13 21:03l 518 Lines 15684 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V8 140
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Sent: 130501/1902Z @:CX2SA.SAL.URY.SA #:5758 [Salto] FBB7.00e $:AMSATBB8140
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. IARU Region 1 - Addition 2m Satellite Allocation (M5AKA)
2. Re: Relay Turksat3usat Posting (M5AKA)
3. Re: Path to HEO (g0mrf@xxx.xxxx
4. OPUSAT Lithium-Ion Capacitor CubeSat and Flying Laptop
satellite (M5AKA)
5. Re: Path to HEO (Nick Pugh)
6. First Call for Papers for 2013 Symposium (Daniel Schultz)
7. Re: Imagine RIT Festival May 4th - AMSAT Fox-2 Maximum Power
Point Tracker Senior Design Project Exhibit (Greg D)
8. Re: Path to HEO (M5AKA)
9. Re: Path to HEO (M5AKA)
10. Fermi Avoids Near Miss In Orbit (B J)
----------------------------------------------------------------------
Message: 1
Date: Tue, 30 Apr 2013 20:45:05 +0100 (BST)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] IARU Region 1 - Addition 2m Satellite Allocation
Message-ID:
<1367351105.80247.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
IARU Region 1 has agreed an addition 2m allocation for the Amateur Satellite
Service subject to IARU Regions 2 (the Americas) and 3 (Asia/Pacific) also
agreeing it.
The IARU Region 2 Conference is in Cancun, Mexico in September 2013
hopefully satellite users in Region 2 will let their National Society know
their views on this matter.
See http://amsat-uk.org/?p=16797
73 Trevor M5AKA
----
------------------------------
Message: 2
Date: Tue, 30 Apr 2013 20:54:53 +0100 (BST)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: "'JoAnne Maenpaa'" <k9jkm@xxxxxxx.xxx>, "'amsat-bb'"
<amsat-bb@xxxxx.xxx>, Dave W?DHB <dave@xxxxx.xxx>
Subject: [amsat-bb] Re: Relay Turksat3usat Posting
Message-ID:
<1367351693.8424.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
TURSAT-3USAT announcement at
http://amsat-uk.org/2013/04/30/turksat-3usat-announcement/
73 Trevor M5AKA
--- On Tue, 30/4/13, Dave W?DHB <dave@xxxxx.xxx> wrote:
> From: Dave W?DHB <dave@xxxxx.xxx>
> Subject: [amsat-bb] Re: Relay Turksat3usat Posting
> To: "'JoAnne Maenpaa'" <k9jkm@xxxxxxx.xxx>, "'amsat-bb'"
<amsat-bb@xxxxx.xxx>
> Date: Tuesday, 30 April, 2013, 0:20
> Any further updates ?
>
> Did not copy TurkSAT3USAT on? 2 passes over US today
> 16:47 and 18:25
> Did copy CubeBUG both passes, still just a carrier, no
> packet
>
> Dave W0DHB
>
>
> ----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx
> [mailto:amsat-bb-bounces@xxxxx.xxxx
> On
> Behalf Of JoAnne Maenpaa
> Sent: Sunday, April 28, 2013 6:16 PM
> To: 'amsat-bb'
> Subject: [amsat-bb] Relay Turksat3usat Posting
>
> Some on amsat-bb are not on Facebook. The Turksat3usat Team
> posts most
> of their updates on Facebook. Here is a copy/paste from
> Turksat3usat
> Fan Club on Facebook today:
>
> Turksat3usat Fan Club
>
> ?nemli: TURKSAT-3USAT uydumuz bu gece T?rkiye ?zerinden
> y?ksek a??da
> ge?ecek. Radyo amat?rlerinden ricam?z tekrar duyuru
> yap?lana kadar
> sadece beacon sinyalini izlemeleri ve olabildi?ince y?ksek
> kaliteli
> (ve s?k??t?rma yapmadan) ses kayd? yapmalar?d?r.
> Kay?tlar?n?z?
> do?rudan turksat3usat@xxxxxx.xxx.xx
> adresine g?nderebilirsiniz. Sinyal
> kayd?n?z ne kadar d???k olursa olsun t?m
> kay?tlar?n?z? g?nderiniz.
> Te?ekk?rler.
>
> -----
>
> Important: TURKSAT-3USAT uydumuz from Turkey will be high
> angle
> tonight. Radio beacon signal until the announcement again
> please only
> amat?rlerinden monitor, and high-quality as possible (and
> without any
> compression) audio recording make bids. Records directly to
> turksat3usat@xxxxxx.xxx.xx.
> No matter how low the signal records all
> records. Thanks. (Translated by Bing)
>
>
> -----
>
> AMSAT-NA and AMSAT-DL also have Facebook groups.
>
> --
> 73 de JoAnne K9JKM
> k9jkm@xxxxx.xxx
> Editor, AMSAT Journal
>
>
>
>
> _______________________________________________
> 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: 3
Date: Tue, 30 Apr 2013 16:35:08 -0400 (EDT)
From: g0mrf@xxx.xxx
To: nss@xxx.xxxx glasbrenner@xxxxxxxxxx.xxxx amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Path to HEO
Message-ID: <8D013F956F6FCFA-79C-DEE6@xxxxxxxxxxxx.xxxxxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Hi all.
Deployable gain antennas are possible, but unfortunately attitude
control is a real issue. If the orbit has a high perigee then the
magnetic field for magnetorquing is minimal. With limited fuel and
little or no magnetic field, keeping the antennas pointing correctly is
difficult. Also, all of this getting to HEO is challenging given our
lack of experience with low mass / ion propulsion.
A compromise could be 4 Watts (ish) from MEO. That can be done with
omnidirectional antennas, so when the batteries die and the fuel is
exhausted we still have a useful satellite even if we cannot control
attitude.
Would be great to team up with a group who want to test a propulsion
system and apply for a launch opportunity.
Thanks
David
Here's an oldie but goodie..... http://www.g0mrf.com/MEOSAT.htm
-----Original Message-----
From: Joe <nss@xxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Sent: Tue, 30 Apr 2013 17:18
Subject: [amsat-bb] Re: Path to HEO
On the Outside? :-)
just like 90% of the earlier birds they are rolled or folded up until
after deployment. IIRC: one of the first actually did use a rolled up
tame measure for the elements.
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 4/30/2013 9:51 AM, Andrew Glasbrenner wrote:
> Where do the gain antennas go on a 10x10x30cm HEO?
>
> 73, Drew KO4MA
>
> Sent from my iPhone
>
> On Apr 30, 2013, at 9:01 AM, N0JY <n0jy@xxxxxxx.xxx> wrote:
>
>> I wonder about the amount of time spent in the Van Allen belts on
the way up
there. We're concerned about radiation at a 650 km orbit, it might
take some
heavy duty ($$) radiation tolerant components to survive a few years
trip
through the radiation belts as well as the final high orbit?
>>
>> Jerry
>> N0JY
>>
>>
>>
>> _______________________________________________
>> 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-NA member? Join now to support the amateur satellite
program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 4
Date: Tue, 30 Apr 2013 22:40:22 +0100 (BST)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] OPUSAT Lithium-Ion Capacitor CubeSat and Flying
Laptop satellite
Message-ID:
<1367358022.10229.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
The OPUSAT CubeSat, slated for launch in the Japanese Financial Year 2013,
is planning to use a Lithium-Ion Capacitor. I think this will be the first
time such a device has been flown in space. If successful the greater power
density offered could be useful for future CubeSat missions.
OPUSAT CubeSat
http://amsat-uk.org/2013/04/30/opusat-cubesat/
Flying Laptop ? 130 kg Satellite
http://amsat-uk.org/2013/04/30/flying-laptop-130-kg-satellite/
73 Trevor M5AKA
AMSAT-UK website http://amsat-uk.org/
Facebook https://www.facebook.com/pages/AMSAT-UK/208113275898396
Twitter https://twitter.com/AMSAT_UK
----
------------------------------
Message: 5
Date: Tue, 30 Apr 2013 16:41:24 -0500
From: "Nick Pugh" <quadpugh@xxxxxxxxx.xxx>
To: "'Andrew Glasbrenner'" <glasbrenner@xxxxxxxxxx.xxx>,
<n0jy@xxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Path to HEO
Message-ID: <019e01ce45eb$77743a60$665caf20$@xxx>
Content-Type: text/plain; charset="us-ascii"
If the solar panels are on 1 end that could be the back side of a patch
antenna or reflectors for a Yagi. A 3U gives us about 12 inches in one
plane. We will have reaction wheels to do pointing. Both Pumpkin and ISSIS
say they have flight heritage on > 50 watt panels. EaLanta has rides to 600
KM and we will have to deal with MR Van Allen when we get there.
This is a great topic at the attitude adjustment session with cold 807's at
Dayton
CU there nick K%QXJ
Where do the gain antennas go on a 10x10x30cm HEO?
73, Drew KO4MA
Sent from my iPhone
On Apr 30, 2013, at 9:01 AM, N0JY <n0jy@xxxxxxx.xxx> wrote:
> I wonder about the amount of time spent in the Van Allen belts on the way
up there. We're concerned about radiation at a 650 km orbit, it might take
some heavy duty ($$) radiation tolerant components to survive a few years
trip through the radiation belts as well as the final high orbit?
>
> Jerry
> N0JY
>
>
>
> _______________________________________________
> 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: 6
Date: Wed, 01 May 2013 00:06:40 -0400
From: "Daniel Schultz" <n8fgv@xxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] First Call for Papers for 2013 Symposium
Message-ID: <955ReaeFO1088S08.1367381200@xxxxx.xxx.xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
This is the first call for papers for the 2013 AMSAT Annual Meeting and Space
Symposium to be held on the weekend of November 1 - 3, 2013, at the Marriott
Hobby Airport Hotel, Houston, Texas. Proposals for papers, symposium
presentations and poster presentations are invited on any topic of interest to
the amateur satellite community. We request a tentative title of your
presentation as soon as possible, with final copy to be submitted by October 1
for inclusion in the printed proceedings. Abstracts and papers should be sent
to Dan Schultz at n8fgv@xxxxx.xxx
------------------------------
Message: 7
Date: Tue, 30 Apr 2013 22:34:33 -0700
From: Greg D <ko6th.greg@xxxxx.xxx>
To: Bryce Salmi <bts2637@xxx.xxx>
Cc: Amsat BB <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] Re: Imagine RIT Festival May 4th - AMSAT Fox-2
Maximum Power Point Tracker Senior Design Project Exhibit
Message-ID: <5180A969.6010603@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Bryce Salmi wrote:
> Hello everyone,
>
> I am a senior studying Electrical Engineering at the Rochester
> Institute of Technology (RIT) and I am a member of a senior design group
> that was sponsored by AMSAT to produce an engineering prototype *Maximum
> Power Point Tracker* (MPPT) for the Fox-2 satellite. Most members of our
> team are licensed radio amateurs and active members of the RIT Amateur
> Radio Club K2GXT and have had quite the experience with this project! We've
> worked extremely hard over the past 20 weeks to design and build a working
> MPPT. We'd enjoy sharing this experience with anyone interested.
{snip}
Ok, so be honest here... How far did you all have to read before you
realized he was NOT talking about the Microsoft Office application?
Bryce, this looks like an excellent and fun project, not to mention the
great potential for Dilbert cartoon fodder.
Greg KO6TH
------------------------------
Message: 8
Date: Wed, 1 May 2013 07:53:30 +0100 (BST)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: nss@xxx.xxxx glasbrenner@xxxxxxxxxx.xxxx amsat-bb@xxxxx.xxxx
g0mrf@xxx.xxx
Subject: [amsat-bb] Re: Path to HEO
Message-ID:
<1367391210.23147.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
--- On Tue, 30/4/13, g0mrf@xxx.xxx <g0mrf@xxx.xxx> wrote:
> A compromise could be 4 Watts (ish) from MEO.?
> Here's an oldie but goodie..... http://www.g0mrf.com/MEOSAT.htm
Yes MEO would be good. It should be possible to improve the signal levels
while keeping omni-directional antennas on the satellite by using lower
frequencies bands.
A 144 to 50 MHz (if we can get an allocation there) transponder or 144 to 28
MHz would have a significantly reduced path loss on the downlink (8 dB ?)
compared to 435/145.
73 Trevor M5AKA
------------------------------
Message: 9
Date: Wed, 1 May 2013 08:28:29 +0100 (BST)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Path to HEO
Message-ID:
<1367393309.60403.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
--- On Tue, 30/4/13, Nick Pugh <quadpugh@xxxxxxxxx.xxx> wrote:
> Both Pumpkin and ISSIS say they have flight heritage on
> 50 watt panels. EaLanta has rides to 600 KM
50 watts on a CubeSat ? That surprises me, I don't know of any that have
flown so far that have generated more than about 6 watts of Solar Power.
When you say "flight heritage" which CubeSat is being referred to ?
A free ELaNa CubeSat launch would mean partnering with an educational
institution so part of the 3U and some of the solar power would have to be
reserved for their payload.
> and we will have to deal with MR Van Allen when we get there.
Hopefully deal with it by design on the ground first ;-)
RS-15 (beacon 29.325 MHz) has been in the lower part (2,158 by 1,900 km
orbit) of the radiation belt for over 18 years.
73 Trevor M5AKA
--- On Wed, 1/5/13, M5AKA <m5aka@xxxxx.xx.xx> wrote:
> Date: Wednesday, 1 May, 2013, 7:53
> --- On Tue, 30/4/13, g0mrf@xxx.xxx <g0mrf@xxx.xxx>
> wrote:
> > A compromise could be 4 Watts (ish) from MEO.
> > Here's an oldie but goodie..... http://www.g0mrf.com/MEOSAT.htm
>
> Yes MEO would be good. It should be possible to improve the
> signal levels while keeping omni-directional antennas on the
> satellite by using lower frequencies bands.
>
> A 144 to 50 MHz (if we can get an allocation there)
> transponder or 144 to 28 MHz would have a significantly
> reduced path loss on the downlink (8 dB ?) compared to
> 435/145.
>
> 73 Trevor M5AKA
------------------------------
Message: 10
Date: Wed, 1 May 2013 18:32:27 +0000
From: B J <va6bmj@xxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Fermi Avoids Near Miss In Orbit
Message-ID:
<CAP7QzkNvBSwud+gbD71JfnstDZVeYUsjLm91cRcu1pqAnRSmYw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
http://www.nasa.gov/mission_pages/GLAST/news/bullet-dodge.html
73s
Bernhard VA6BMJ @ DO33FL
------------------------------
_______________________________________________
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 140
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