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CX2SA > SATDIG 26.01.10 22:04l 510 Lines 15975 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: Amateur Satellites Close Conjuctions (Joe Fitzgerald)
2. Re: First Tweet from space (Roger Kolakowski)
3. Re: LEO/cube sat for sale 8000$ (Alexandru Csete)
4. Re: Mobile Sat antenna (w6zkh@xxxxxxx.xxxx
5. Genesat-1 Operational? (Robert Bruninga)
6. Re: Genesat-1 Operational? (Mark L. Hammond)
7. Re: Amateur Satellites Close Conjuctions (Edward Cole)
8. Re: LEO/cube sat for sale 8000$ (Trevor .)
9. Re: LEO/cube sat for sale 8000$ (Nigel Gunn G8IFF/W8IFF)
10. MAI-75 (andy thomas)
----------------------------------------------------------------------
Message: 1
Date: Tue, 26 Jan 2010 09:08:56 -0500
From: "Joe Fitzgerald" <jfitzgerald@xxxx.xxx.xxx>
Subject: [amsat-bb] Re: Amateur Satellites Close Conjuctions
To: amsat-bb@xxxxx.xxx
Message-ID: <96db47336999b157488e33b97bba04dd.squirrel@xxxx.xxx.xxx>
Content-Type: text/plain;charset=iso-8859-1
> Hello,
>
> Given the recent close conjunction between Compass-1 and Sich 1,
> I was curious how common such encounters were. Using
> SOCRATES on the celestrak site, http://celestrak.com/SOCRATES/,
> it looks like they are fairly common.
>
>
Take those forecasts with a grain of salt since they are based on TLE's
with limited accuracy. On the day Iridium 33 and Cosmos 2251 collided,
SOCRATES forecast a couple other conjunctions closer. SOCRATES predicted
a miss of 584 m.
Fortunately for us, there is a lot of space in space.
-Joe KM1P
------------------------------
Message: 2
Date: Tue, 26 Jan 2010 09:15:41 -0500
From: Roger Kolakowski <Rogerkola@xxx.xxx>
Subject: [amsat-bb] Re: First Tweet from space
To: "Trevor ." <m5aka@xxxxx.xx.xx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4B5EF90D.3070106@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
This is one of the more obvious reasons why the ISS crew doesn't need to
use Ham Radio....
http://twitter.com/Astro_TJ
Thoughtful comments during the times they have to play....
Roger
WA1KAT
Trevor . wrote:
> Expedition 22 sends first Tweet from space
> http://www.southgatearc.org/news/january2010/first_tweets_from_space.htm
>
> 73 Trevor M5AKA
>
------------------------------
Message: 3
Date: Tue, 26 Jan 2010 15:17:49 +0100
From: Alexandru Csete <alexc@xxxx.xx.xx>
Subject: [amsat-bb] Re: LEO/cube sat for sale 8000$
To: amsat-bb@xxxxx.xxx
Message-ID: <20100126151749.17711t44rsqnm3d9@xxxxxxx.xxxx.xx.xx>
Content-Type: text/plain; charset=ISO-8859-1; DelSp="Yes";
format="flowed"
Quoting William Leijenaar <pe1rah@xxxxx.xxx>:
> Hi AMSATs,
>
> I just read the message about the tube-sats.
> I was having a look to their options, but when I understand well in
> the structure there is already a radio integrated ?
Hi William,
You can get a tubesat both with or without electronics/radio. I think
you can even use your own structure as long as it fits into the
envelope specs.
> What is the area that can be used for electronics ?
> The weight is max. 250 grams, which is no problem to handle one off
> my LE005-R2 linear transponders (weights only 30 grams).
> Check it on: www.leijenaarelectronics.nl
Max OD = 8.94 cm (3.52 in), ID= 8.56 cm (3.37 in), Length = 12.7 cm (5.0 in)
So it is slightly smaller than a cubesat in one dimension, but longer
in length.
You can get the full specs on their website:
http://www.interorbital.com/TubeSat_1.htm
There is a PDF/word file
>
> When there is enough space in the tube-sat to fit my transponder,
> this is very?interresting.
> Just fill the existing space with Li-ion batts and there you go...
Indeed!
> Anyone already have experience with these tube-sats ?
I do not have any practical experience with them, but I know they have
been working on their launcher for many years. If I had 8000$ I would
buy a tubesat.
Of course, since their launcher does not have any track record, it
should be considered as high risk. But who cares? I mean if you
compare it to the price of a cubesat launch today, which is how much?
80000$?
73
Alex OZ9AEC
------------------------------
Message: 4
Date: Tue, 26 Jan 2010 14:22:53 +0000 (UTC)
From: w6zkh@xxxxxxx.xxx
Subject: [amsat-bb] Re: Mobile Sat antenna
To: "Pedro A. Perez" <eb4dka@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID:
<1015383282.4591861264515773691.JavaMail.root@xxxxxxx.xxxxxxxxxxx.xx.xxxx.xxxx
xxx.xxx>
Content-Type: text/plain; charset=utf-8
My first SAT antenna was a very ugly CJU, but it worked as well as the Arrow
or Elk for downlink.
John W6ZKH
----- Original Message -----
From: "Pedro A. Perez" <eb4dka@xxxxxxxx.xx>
To: "joe barkley" <jbarkley@xxxxxxxx.xxx>, amsat-bb@xxxxx.xxx
Sent: Tuesday, January 26, 2010 4:04:30 AM GMT -08:00 US/Canada Pacific
Subject: [amsat-bb] Re: Mobile Sat antenna
Hi,
I use for mobile this setup (FM and linear birds mode J):
http://eb4dka.laserenadigital.com/Amateur%20Satellite%20Articles/FO29_MOBILE.p
df
I upgraded the downlink antenna using a CJU with better results:
http://eb4dka.laserenadigital.com/Videos%20AMSAT/VIDEO_EB4DKA%20via%20FO29%20d
esde%20movil.html
Hope this helps.
73 de Pedro EB4DKA
http://eb4dka.laserenadigital.com
----- Original Message -----
From: "joe barkley" <jbarkley@xxxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Thursday, January 21, 2010 11:54 PM
Subject: [amsat-bb] Mobile Sat antenna
> Hi All,
> I have heard a couple times on the FM birds of stations
> signing mobile. I wonder what type of antennas are used for mobile.
> I have an Arrow I use portable with my HT. I have a full duplex Icom
> FM rig and could just barely hear HO-68 on a Wednesday pass up in Em95.
> No preamp or anything yet and just a 1/4 wave duobander.
> What would it take to operate truly mobile from an antenna standpoint.
> Just playing with the idea. I travel a bit during Spring and Summer and
> might be fun to try.
>
> Joe
> KI4TZ
>
> _______________________________________________
> 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: 5
Date: Tue, 26 Jan 2010 11:11:50 -0500
From: "Robert Bruninga" <bruninga@xxxx.xxx>
Subject: [amsat-bb] Genesat-1 Operational?
To: "'amsat bb'" <amsat-bb@xxxxx.xxx>
Message-ID: <4B989126A9B048E3BC88D82FAE19E349@xxxxx.xxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
The AMSAT SATS page says that GENESAT-1 is operational
It is not listed on D Carr's web page as being reported by
anyone.
We listended for it with a class of students today and heard
nothing at around 11:15 EST.
Google finds nothing but reports of OPERATIONAL, but then none
of them are newer than January 08.
If anyone else can confirm that it is non operational, then I'll
inform the AMSAT web site guru to remove its operational status.
Thanks
Bob, WB4APR
------------------------------
Message: 6
Date: Tue, 26 Jan 2010 11:27:10 -0500
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] Re: Genesat-1 Operational?
To: bruninga@xxxx.xxx
Cc: amsat bb <amsat-bb@xxxxx.xxx>
Message-ID:
<5d8cecfe1001260827g6c8ac316p522320790fd7bd70@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Bob,
I suggest you also visit DK3WN's satblog for current satellte updates.
Looks like reports as recent as Jan 24th.
http://www.dk3wn.info/p/?cat=12
73,
Mark N8MH
On Tue, Jan 26, 2010 at 11:11 AM, Robert Bruninga <bruninga@xxxx.xxx> wrote:
> The AMSAT SATS page says that GENESAT-1 is operational
> It is not listed on D Carr's web page as being reported by
> anyone.
> We listended for it with a class of students today and heard
> nothing at around 11:15 EST.
>
> Google finds nothing but reports of OPERATIONAL, but then none
> of them are newer than January 08.
>
> If anyone else can confirm that it is non operational, then I'll
> inform the AMSAT web site guru to remove its operational status.
>
> Thanks
> Bob, WB4APR
>
>
> _______________________________________________
> 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
>
--
Mark L. Hammond [N8MH]
------------------------------
Message: 7
Date: Tue, 26 Jan 2010 07:53:23 -0900
From: Edward Cole <kl7uw@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Amateur Satellites Close Conjuctions
To: "Joe Fitzgerald" <jfitzgerald@xxxx.xxx.xxx>, amsat-bb@xxxxx.xxx
Message-ID: <201001261653.o0QGrNlj024774@xxxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Sort of like walking 1000 paces, turning, and firing...not much
danger of anyone perishing in such a duel? Better yet try to hit the
other's bullet. The most amazing is that two orbiting satellites
actually collided.
73, Ed - KL7UW
afterall space is not like the San Diego Fwy in rush hour
At 05:08 AM 1/26/2010, Joe Fitzgerald wrote:
> > Hello,
> >
> > Given the recent close conjunction between Compass-1 and Sich 1,
> > I was curious how common such encounters were. Using
> > SOCRATES on the celestrak site, http://celestrak.com/SOCRATES/,
> > it looks like they are fairly common.
> >
> >
>
>Take those forecasts with a grain of salt since they are based on TLE's
>with limited accuracy. On the day Iridium 33 and Cosmos 2251 collided,
>SOCRATES forecast a couple other conjunctions closer. SOCRATES predicted
>a miss of 584 m.
>
>Fortunately for us, there is a lot of space in space.
>
>-Joe KM1P
>
>_______________________________________________
>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
73, Ed - KL7UW, WD2XSH/45
======================================
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
500-KHz/CW, 144-MHz EME, 1296-MHz EME
DUBUS Magazine USA Rep dubususa@xxxxxxx.xxx
======================================
------------------------------
Message: 8
Date: Tue, 26 Jan 2010 16:55:38 +0000 (GMT)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
Subject: [amsat-bb] Re: LEO/cube sat for sale 8000$
To: amsat-bb@xxxxx.xxxx William Leijenaar <pe1rah@xxxxx.xxx>
Message-ID: <685403.79916.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Hi Willliam,
Also the very low orbit only gives the Tubesats a life of a few weeks.
The very well funded company SpaceX took many years and 3 launch failures
before they finally got the Falcon 1 into space. It may be reasonable to
assume the company behind Tubesat will take just as long before they get a
working launch system.
73 Trevor M5AKA
--- On Tue, 26/1/10, William Leijenaar <pe1rah@xxxxx.xxx> wrote:
> From: William Leijenaar <pe1rah@xxxxx.xxx>
> Subject: [amsat-bb] Re: LEO/cube sat for sale 8000$
> To: amsat-bb@xxxxx.xxx
> Date: Tuesday, 26 January, 2010, 13:48
> Hi AMSATs,
>
> I just read the message about the tube-sats.
> I was having a look to their options, but when I understand
> well in the structure there is already a radio integrated ?
>
> What is the area that can be used for electronics ?
> The weight is max. 250 grams, which is no problem to handle
> one off my LE005-R2 linear transponders (weights only 30
> grams).
> Check it on: www.leijenaarelectronics.nl
>
> When there is enough space in the tube-sat to fit my
> transponder, this is very?interresting.
> Just fill the existing space with Li-ion batts and there
> you go...
>
> Anyone already have experience with these tube-sats ?
>
> 73, de PE1RAH
> William Leijenaar
> ---
>
>
> Send instant messages to your online friends http://uk.messenger.yahoo.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
>
------------------------------
Message: 9
Date: Tue, 26 Jan 2010 17:49:39 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Subject: [amsat-bb] Re: LEO/cube sat for sale 8000$
To: "Trevor ." <m5aka@xxxxx.xx.xx>
Cc: amsat-bb@xxxxx.xxxx William Leijenaar <pe1rah@xxxxx.xxx>
Message-ID: <4B5F2B33.1050104@xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
Unless they are going to buy launches from elseware rather than develop the
launch hardware themselves.
On 26-Jan-10 16:55, Trevor . wrote:
> Hi Willliam,
>
> Also the very low orbit only gives the Tubesats a life of a few weeks.
>
> The very well funded company SpaceX took many years and 3 launch failures
before they finally got the Falcon 1 into space. It may be reasonable to
assume the company behind Tubesat will take just as long before they get a
working launch system.
>
------------------------------
Message: 10
Date: Tue, 26 Jan 2010 19:14:40 +0000 (GMT)
From: andy thomas <andythomasmail@xxxxx.xx.xx>
Subject: [amsat-bb] MAI-75
To: amsat <amsat-bb@xxxxx.xxx>
Message-ID: <865545.66290.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Gogle with the Russian characters ???-75 and you get results like
http://www.mcc.rsa.ru/exp/mai-75.htm
that can be dropped into babelfish to get:
In English
Experiment of " MAI -75" (it continues with s -11) Automatic spacecraft and
the contemporary technologies the personal communications of the connection
Producer The Moscow Aviation Institute ANE MUNTZ " [Kosmos]" Participant
[RKK] of " [Energiya]" [im]. OF [S].[P]. Korolev Scientific leader Moderator
Doctor of Technical Science, assoc. member. WOUNDS Of [alifanov] [O].[M].
[Spirin] [A].[I]. Purpose: Checking the possibility: ? the organization of
personal communications between the users on the Earth and the information
resources inside s; ? the use of standard protocols of network the Internet
for the turning to information resources inside s; ? the start in the
training process of VUZ (Institute of Higher Education) of the aerospace
profile of the information and telecommunication resources, obtained in the
process of conducting the experiment. Tasks: Finalizing the common
methodology of the transfer of video images from onboard RS s along the
radio amateur's communication channel (SSTV) and its method in [TSPOI] the
MAI in the interests of educational projects. Conducting by photo and
[videosemok] on board RS s according to the scenic plans. Obtaining initial
data for creation and applying assignment system of space information to the
wide circle of users. Utilized equipment: During the first stage the
experiment of " MAI -75" will begin to operate existing on board RS s
digital of photo and video the equipment, utilized for fulfilling the
surveys according to the scenic plans and the system of radio amateur's
communications with the frequency bands 144-146 and 430-440 MHz for the
subsequent image transmission to the earth. The official equipment is used
for the realization of experiment: the complex of amateurish package radio
communication, the video camera HDV Of sony HVR-Z1, the digital camera Of
nikon Of d200, the digital camera Of nikon D2X, [videokommunikator] Of
kenwood VC-H1 with
overall mass 40,7 kg.
73 de andy g0sfj
------------------------------
_______________________________________________
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 5, Issue 49
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