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CX2SA > SATDIG 06.07.09 01:41l 1157 Lines 41033 Bytes #999 (0) @ WW
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Today's Topics:
1. I just curious (kd8bxp@xxx.xxxx
2. Re: I just curious (Greg D.)
3. Re: I just curious (kd8bxp@xxx.xxxx
4. Re: Antenna Question (George Henry)
5. Re: dream your own sat (John B. Stephensen)
6. Re: dream your own sat (Trevor .)
7. Re: dream your own sat (Bob Bruninga )
8. Re: dream your own sat (Bill Ress)
9. Re: dream your own sat (kd8bxp@xxx.xxxx
10. Original 13 Colonies - thanks to all! (n3tl@xxxxxxxxx.xxxx
11. An alternative ... or ... competition !!!. (Frank H. Bauer)
----------------------------------------------------------------------
Message: 1
Date: Sun, 5 Jul 2009 19:06:54 +0000
From: kd8bxp@xxx.xxx
Subject: [amsat-bb] I just curious
To: amsat-bb@xxxxx.xxx
Message-ID:
<1108394163-1246820813-cardhu_decombobulator_blackberry.rim.net-
200880597-@xxxxxxx.xxxx.xxxx.xx.xxxxxxxxxx>
Content-Type: text/plain; charset="utf-8"
This is probably one of those questions that has a very simple answer maybe
something I wasn't thinking of.
On the FM birds how come the split is V/U or U/V? Are there any V/V birds?
I mean if doppler doesn't effect the vhf as much wouldn't it make since to
have some V/V? Wouldn't have to worry about doppler anyways
I know there is a reason, so I am curious that is all!
LeRoy, KD8BXP
http://www.HamOhio.com
Sent on the Now Network? from my Sprint? BlackBerry
------------------------------
Message: 2
Date: Sun, 5 Jul 2009 12:14:44 -0700
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Subject: [amsat-bb] Re: I just curious
To: <kd8bxp@xxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <BLU133-W260DDB3C96053C99DE706A92A0@xxx.xxx>
Content-Type: text/plain; charset="utf-8"
I think actually that there was an early OSCAR that did run a same-band
transponder, but it's not easy. The problem is getting enough separation
filtering between the receive and transmit so that the satellite doesn't hear
itself. Terrestrial repeaters use large mechanical filters ("cans") to do
this, but these are impractical on a spacecraft that may be many times smaller
than the filter itself. Going cross-band makes that filtering much easier.
Greg KO6TH
> To: amsat-bb@xxxxx.xxx
> From: kd8bxp@xxx.xxx
> Date: Sun, 5 Jul 2009 19:06:54 +0000
> Subject: [amsat-bb] I just curious
>
> This is probably one of those questions that has a very simple answer maybe
something I wasn't thinking of.
>
> On the FM birds how come the split is V/U or U/V? Are there any V/V birds?
>
> I mean if doppler doesn't effect the vhf as much wouldn't it make since to
have some V/V? Wouldn't have to worry about doppler anyways
>
> I know there is a reason, so I am curious that is all!
>
> LeRoy, KD8BXP
> http://www.HamOhio.com
>
> Sent on the Now Network? from my Sprint? BlackBerry
>
_________________________________________________________________
Hotmail? has ever-growing storage! Don?t worry about storage limits.
http://windowslive.com/Tutorial/Hotmail/Storage?ocid=TXT_TAGLM_WL_HM_Tutorial_
Storage_062009
------------------------------
Message: 3
Date: Sun, 5 Jul 2009 19:19:29 +0000
From: kd8bxp@xxx.xxx
Subject: [amsat-bb] Re: I just curious
To: "Greg D." <ko6th_greg@xxxxxxx.xxx>, amsat-bb@xxxxx.xxx
Message-ID:
<770953488-1246821568-cardhu_decombobulator_blackberry.rim.net-
773202074-@xxxxxxx.xxxx.xxxx.xx.xxxxxxxxxx>
Content-Type: text/plain; charset="utf-8"
I knew there was a reason - and that makes perfect since. I have seen the
"cans" you talk about and they can get large.
Thanks for the info makes all the difference in the world
LeRoy, KD8BXP
http://www.HamOhio.com
Sent on the Now Network? from my Sprint? BlackBerry
-----Original Message-----
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Date: Sun, 5 Jul 2009 12:14:44
To: <kd8bxp@xxx.xxx>; <amsat-bb@xxxxx.xxx>
Subject: RE: [amsat-bb] I just curious
I think actually that there was an early OSCAR that did run a same-band
transponder, but it's not easy. The problem is getting enough separation
filtering between the receive and transmit so that the satellite doesn't hear
itself. Terrestrial repeaters use large mechanical filters ("cans") to do
this, but these are impractical on a spacecraft that may be many times smaller
than the filter itself. Going cross-band makes that filtering much easier.
Greg KO6TH
> To: amsat-bb@xxxxx.xxx
> From: kd8bxp@xxx.xxx
> Date: Sun, 5 Jul 2009 19:06:54 +0000
> Subject: [amsat-bb] I just curious
>
> This is probably one of those questions that has a very simple answer maybe
something I wasn't thinking of.
>
> On the FM birds how come the split is V/U or U/V? Are there any V/V birds?
>
> I mean if doppler doesn't effect the vhf as much wouldn't it make since to
have some V/V? Wouldn't have to worry about doppler anyways
>
> I know there is a reason, so I am curious that is all!
>
> LeRoy, KD8BXP
> http://www.HamOhio.com
>
> Sent on the Now Network? from my Sprint? BlackBerry
>
_________________________________________________________________
Hotmail? has ever-growing storage! Don?t worry about storage limits.
http://windowslive.com/Tutorial/Hotmail/Storage?ocid=TXT_TAGLM_WL_HM_Tutorial_
Storage_062009
------------------------------
Message: 4
Date: Sun, 5 Jul 2009 15:38:56 -0500
From: "George Henry" <ka3hsw@xxx.xxx>
Subject: [amsat-bb] Re: Antenna Question
To: "amsat bb" <amsat-bb@xxxxx.xxx>
Message-ID: <954FCBD128D64457931D07938A9234A2@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
True, but since the QST article mentioned a phasing line, I was trying to
figure out his design.
George, KA3HSW
----- Original Message -----
From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Subject: [amsat-bb] Re: Antenna Question
To: George Henry <ka3hsw@xxx.xxx>
Cc: amsat bb <amsat-bb@xxxxx.xxx>, Jim Jerzycke <kq6ea@xxxxxxx.xxx>
>
> I would suggest that you don't need a phasing line if the dipoles are
> spaces a quarter wave and that both are fed by
> equal length cables.
>
> George Henry wrote:
>
>> Looking at the pictures, it appears that the dipoles are separated by
>> about
>> 1/4 wave in free space, which is physically longer than a 1/4 wave
>> phasing
>> line would be. And I'd think that the phasing line would have to be 1/2
>> wavelength, after introducing a 1/4 wave offset between the dipoles,
>> correct?
>
------------------------------
Message: 5
Date: Sun, 5 Jul 2009 20:54:38 -0000
From: "John B. Stephensen" <kd6ozh@xxxxxxx.xxx>
Subject: [amsat-bb] Re: dream your own sat
To: <kc6uqh@xxx.xxx>, "'rupert red'" <rupert.red@xxxx.xx>,
<amsat-bb@xxxxx.xxx>
Message-ID: <61D881A7FDCA4E9B8BFA63C14F45041F@xxxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
The problem is that amateur radio doesn't significantly reduce the cost of a
satellite. Any interest by the Red Cross would not be in the satellite but
in human volunteers that might come with it. Unfortunately, the LEO
satellites that hams can afford generate little interest in this forum.
73,
John
KD6OZH
----- Original Message -----
From: "Art McBride" <kc6uqh@xxx.xxx>
To: "'rupert red'" <rupert.red@xxxx.xx>; <amsat-bb@xxxxx.xxx>
Sent: Sunday, July 05, 2009 19:00 UTC
Subject: [amsat-bb] Re: dream your own sat
> Rupert,
> I think that is a fair assumption on your part, but only because the are
> no
> new ideas being presented that have commercial potential that can use
> Amateur Radio as an inexpensive to proof of concept.
> In the present Amateur Radio community only Emergency Communications is
> getting the publicity. Perhaps FEMA or the Red Cross might help pay for an
> emergency communication satellite otherwise it is LEO's forever!
>
> Art, KC6UQH
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
> Behalf Of rupert red
> Sent: Sunday, July 05, 2009 4:47 AM
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] dream your own sat
>
>
> Hallo all...
>
> from a while I'm hearing about MANY different and interesting satellite
> solutions...
>
> LEO, MEO, HEO, GEO... MOON !!!
>
> The problem is only ONE !
>
> Amateur radio community has no money for this project, and will never
> have!
>
> Amsat & Co will never be able to collect millions.... I red on this bb
> that
> hams has no money for an expensive ground station... then how can they
> send
> many money to Amsat?
>
> Public and private organizations all over the world have not an high
> consideration of hams, and will never invest founds for them.
>
> The conclusion is only ONE... we will never see a new oscar satellite in
> the
> sky (at least some student's cube).
>
> Let's all dream together guys.
>
>
>
> Best 73 Rupert
>
> _________________________________________________________________
> Condividi e organizza le tue immagini con Windows Live Foto.
>
> http://www.microsoft.com/windows/windowslive/photos.aspx
> _______________________________________________
> 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
>
> __________ Information from ESET NOD32 Antivirus, version of virus
> signature
> database 4217 (20090704) __________
>
> The message was checked by ESET NOD32 Antivirus.
>
> http://www.eset.com
>
>
>
>
> __________ Information from ESET NOD32 Antivirus, version of virus
> signature
> database 4218 (20090705) __________
>
> The message was checked by ESET NOD32 Antivirus.
>
> http://www.eset.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: 6
Date: Sun, 5 Jul 2009 21:39:41 +0000 (GMT)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
Subject: [amsat-bb] Re: dream your own sat
To: amsat-bb@xxxxx.xxx
Message-ID: <238714.6548.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
The recently launched TerreStar-1 is designed to provides emergency comms
capability
http://www.southgatearc.org/news/july2009/terrestar_1_launched.htm
The basic problem is that Amateurs want linear transponder satellites in
orbits above 1400 km in order to provide reasonable DX opportunities and pass
times greater than 20 minutes. But "cheap" launches only seem to be available
for 500-800 km orbits, so we need to find a way to increase the orbit of say a
triple-cubesat from 700 km to 1400 km using a non-combustive technology so as
not to upset the cheap launch provider.
Providing the radio communications is by comparison a trival exercise it's
finding a means (solar powered thrusters ?) to increase orbital height that's
the tricky part.
73 Trevor M5AKA
--- On Sun, 5/7/09, John B. Stephensen <kd6ozh@xxxxxxx.xxx> wrote:
> From: John B. Stephensen <kd6ozh@xxxxxxx.xxx>
> Subject: [amsat-bb] Re: dream your own sat
> To: kc6uqh@xxx.xxxx "'rupert red'" <rupert.red@xxxx.xx>, amsat-bb@xxxxx.xxx
> Date: Sunday, 5 July, 2009, 9:54 PM
> The problem is that amateur radio
> doesn't significantly reduce the cost of a
> satellite. Any interest by the Red Cross would not be in
> the satellite but
> in human volunteers that might come with it. Unfortunately,
> the LEO
> satellites that hams can afford generate little interest in
> this forum.
>
> 73,
>
> John
> KD6OZH
>
> ----- Original Message -----
> From: "Art McBride" <kc6uqh@xxx.xxx>
> To: "'rupert red'" <rupert.red@xxxx.xx>;
> <amsat-bb@xxxxx.xxx>
> Sent: Sunday, July 05, 2009 19:00 UTC
> Subject: [amsat-bb] Re: dream your own sat
>
>
> > Rupert,
> > I think that is a fair assumption on your part, but
> only because the are
> > no
> > new ideas being presented that have commercial
> potential that can use
> > Amateur Radio as an inexpensive to proof of concept.
> > In the present Amateur Radio community only Emergency
> Communications is
> > getting the publicity. Perhaps FEMA or the Red Cross
> might help pay for an
> > emergency communication satellite otherwise it is
> LEO's forever!
> >
> > Art, KC6UQH
> >
> > -----Original Message-----
> > From: amsat-bb-bounces@xxxxx.xxx
> [mailto:amsat-bb-bounces@xxxxx.xxxx
> On
> > Behalf Of rupert red
> > Sent: Sunday, July 05, 2009 4:47 AM
> > To: amsat-bb@xxxxx.xxx
> > Subject: [amsat-bb] dream your own sat
> >
> >
> > Hallo all...
> >
> > from a while I'm hearing about MANY different and
> interesting satellite
> > solutions...
> >
> > LEO, MEO, HEO, GEO... MOON !!!
> >
> > The problem is only ONE !
> >
> > Amateur radio community has no money for this project,
> and will never
> > have!
> >
> > Amsat & Co will never be able to collect
> millions.... I red on this bb
> > that
> > hams has no money for an expensive ground station...
> then how can they
> > send
> > many money to Amsat?
> >
> > Public and private organizations all over the world
> have not an high
> > consideration of hams, and will never invest founds
> for them.
> >
> > The conclusion is only ONE... we will never see a new
> oscar satellite in
> > the
> > sky (at least some student's cube).
> >
> > Let's all dream together guys.
> >
> >
> >
> > Best 73 Rupert
> >
> >
> _________________________________________________________________
> > Condividi e organizza le tue immagini con?
> Windows Live Foto.
> >
> > http://www.microsoft.com/windows/windowslive/photos.aspx
> > _______________________________________________
> > 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
> >
> > __________ Information from ESET NOD32 Antivirus,
> version of virus
> > signature
> > database 4217 (20090704) __________
> >
> > The message was checked by ESET NOD32 Antivirus.
> >
> > http://www.eset.com
> >
> >
> >
> >
> > __________ Information from ESET NOD32 Antivirus,
> version of virus
> > signature
> > database 4218 (20090705) __________
> >
> > The message was checked by ESET NOD32 Antivirus.
> >
> > http://www.eset.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
>
> _______________________________________________
> 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: Sun, 5 Jul 2009 18:01:25 -0400 (EDT)
From: "Bob Bruninga " <bruninga@xxxx.xxx>
Subject: [amsat-bb] Re: dream your own sat
To: "John B. Stephensen" <kd6ozh@xxxxxxx.xxx>, kc6uqh@xxx.xxxx
"'rupert red'" <rupert.red@xxxx.xx>, amsat-bb@xxxxx.xxx
Message-ID: <20090705180125.AKB35113@xxx.xxxxxxx.xxxx.xxx>
Content-Type: text/plain; charset=us-ascii
> Any interest by the Red Cross would not be in the
> satellite but in human volunteers that might come
> with it. Unfortunately, the LEO satellites that
> hams can afford generate little interest in this forum.
I wish we could some how better influence the dozens of cubesat satellites
being built with AX.25 packet comm systems to at least consider a backup
digipeater comm system. If just six of these allowed for a possibility of
user digipeating, we would have a constellation that would provide worldwide
text messaging capability from mobiles and handhelds with delays no more than
30 minutes.
What a fantastic emergency comm system we could have. If ten of them were
available, then the coverage would be nearly continuous.
Amateur Radio needs to recognize its trememdous legacy of over a century of
wireless text messaging and our ability to bring that connectivity to the
field any time anywhere. We simply need to link them together to meet our
overall "Universal Amateur Radio Text Messaging Initiative", that is, any ham,
any where, any time, able to text message any other ham anywhere using any
hardware device, commercial or amateur by callsign alone.
Please see www.aprs.org/aprs-messaging.html
I count over 2 dozen existing amateur radio text messaging systems few of
which are currently crossconnected. Most talk only within their own
constituents. APRS and some others are already cross connected at the email
level which then connects to cellphones and other wireless devices. So
crossconnecting at the APRS internetwork or at the email level is easy to do.
We just need all authors to consider transparent cross connection as a goal as
per the above web page.
This has already been done for all APRS satellites and even the ARISS system
when it came over the the Satellite APRS channel 145.825. When ARISS is in
packet mode, it enables text messaging and Email to and from the front panel
of any APRS radio in the world via our existing network of APRS ground
stations. See the downlinks on www.ariss.net
We have tried to get other packet satellites on that channel, SUNSAT, PCSAT1,
PCSAT2, ANDE, RAFT and ISS all of which supported this universal text
messaging. We need more, and longer lived satelites. And most any AX.25
cubesat could do it as a secondary mission. We need to look for opportunities
there.
We had GO32 also for a year or so until its recent demise, though it's
frequency was different.
Bob, WB4APR
------------------------------
Message: 8
Date: Sun, 05 Jul 2009 15:11:23 -0700
From: Bill Ress <bill@xxxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: dream your own sat
To: "Trevor ." <m5aka@xxxxx.xx.xx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4A51250B.7030901@xxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi Trevor,
I'm really keen on exploring just how realistic it is to place a "orbit
modifying" system on a 3U CubeSat or a satellite the size of AO51. A lot
is being presented to the CubeSat community about the possibilities of
using the lower cost launch to get to LEO and then "slowly" modify the
orbit to an elliptical MEO - using "safe" plasma or ion propulsion.
David Bowman, G0MRF, presented a great paper at the October AMSAT 2008
Symposium which went into details about how it might be done and a
survey of the propulsion options being worked on. Much of that paper's
background can be found on David's web site at:
> http://g0mrf.com/MEOSAT.htm
(Get a copy of the AMSAT 2008 Symposium papers for his updated presentation)
At the CaL Poly 2009 CubeSat workshop, the following two papers were
presented on the subject of satellite propulsion.
>
http://mstl.atl.calpoly.edu/~bklofas/Presentations/DevelopersWorkshop2009/1_Ne
w_Tech_1/4_Scharlemann-Propulsion.pdf
>
http://mstl.atl.calpoly.edu/~bklofas/Presentations/DevelopersWorkshop2009/1_Ne
w_Tech_1/6_Biddy-Monopropellant_Propulsion.pdf
Are there any AMSAT volunteers out there interested in the technical
challenge of creating a team to help turn these interesting ideas into
flyable hardware?? I'm sure that this could also turn into a great
commercial opportunity for you entrepreneurs out there.
I firmly believe it's an "obvious" technological direction to take, if
we are to "economically" move out of the LEO orbits. Again - anyone
interested in moving talk into action?
Regards...Bill - N6GHz
AMSAT Engineering Task Force
Trevor . wrote:
> The recently launched TerreStar-1 is designed to provides emergency comms
capability
> http://www.southgatearc.org/news/july2009/terrestar_1_launched.htm
>
> The basic problem is that Amateurs want linear transponder satellites in
orbits above 1400 km in order to provide reasonable DX opportunities and pass
times greater than 20 minutes. But "cheap" launches only seem to be available
for 500-800 km orbits, so we need to find a way to increase the orbit of say a
triple-cubesat from 700 km to 1400 km using a non-combustive technology so as
not to upset the cheap launch provider.
>
> Providing the radio communications is by comparison a trival exercise it's
finding a means (solar powered thrusters ?) to increase orbital height that's
the tricky part.
>
> 73 Trevor M5AKA
>
> --- On Sun, 5/7/09, John B. Stephensen <kd6ozh@xxxxxxx.xxx> wrote:
>
>> From: John B. Stephensen <kd6ozh@xxxxxxx.xxx>
>> Subject: [amsat-bb] Re: dream your own sat
>> To: kc6uqh@xxx.xxxx "'rupert red'" <rupert.red@xxxx.xx>, amsat-bb@xxxxx.xxx
>> Date: Sunday, 5 July, 2009, 9:54 PM
>> The problem is that amateur radio
>> doesn't significantly reduce the cost of a
>> satellite. Any interest by the Red Cross would not be in
>> the satellite but
>> in human volunteers that might come with it. Unfortunately,
>> the LEO
>> satellites that hams can afford generate little interest in
>> this forum.
>>
>> 73,
>>
>> John
>> KD6OZH
>>
>> ----- Original Message -----
>> From: "Art McBride" <kc6uqh@xxx.xxx>
>> To: "'rupert red'" <rupert.red@xxxx.xx>;
>> <amsat-bb@xxxxx.xxx>
>> Sent: Sunday, July 05, 2009 19:00 UTC
>> Subject: [amsat-bb] Re: dream your own sat
>>
>>
>>> Rupert,
>>> I think that is a fair assumption on your part, but
>> only because the are
>>> no
>>> new ideas being presented that have commercial
>> potential that can use
>>> Amateur Radio as an inexpensive to proof of concept.
>>> In the present Amateur Radio community only Emergency
>> Communications is
>>> getting the publicity. Perhaps FEMA or the Red Cross
>> might help pay for an
>>> emergency communication satellite otherwise it is
>> LEO's forever!
>>> Art, KC6UQH
>>>
>>> -----Original Message-----
>>> From: amsat-bb-bounces@xxxxx.xxx
>> [mailto:amsat-bb-bounces@xxxxx.xxxx
>> On
>>> Behalf Of rupert red
>>> Sent: Sunday, July 05, 2009 4:47 AM
>>> To: amsat-bb@xxxxx.xxx
>>> Subject: [amsat-bb] dream your own sat
>>>
>>>
>>> Hallo all...
>>>
>>> from a while I'm hearing about MANY different and
>> interesting satellite
>>> solutions...
>>>
>>> LEO, MEO, HEO, GEO... MOON !!!
>>>
>>> The problem is only ONE !
>>>
>>> Amateur radio community has no money for this project,
>> and will never
>>> have!
>>>
>>> Amsat & Co will never be able to collect
>> millions.... I red on this bb
>>> that
>>> hams has no money for an expensive ground station...
>> then how can they
>>> send
>>> many money to Amsat?
>>>
>>> Public and private organizations all over the world
>> have not an high
>>> consideration of hams, and will never invest founds
>> for them.
>>> The conclusion is only ONE... we will never see a new
>> oscar satellite in
>>> the
>>> sky (at least some student's cube).
>>>
>>> Let's all dream together guys.
>>>
>>>
>>>
>>> Best 73 Rupert
>>>
>>>
>> _________________________________________________________________
>>> Condividi e organizza le tue immagini con
>> Windows Live Foto.
>>> http://www.microsoft.com/windows/windowslive/photos.aspx
>>> _______________________________________________
>>> 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
>>>
>>> __________ Information from ESET NOD32 Antivirus,
>> version of virus
>>> signature
>>> database 4217 (20090704) __________
>>>
>>> The message was checked by ESET NOD32 Antivirus.
>>>
>>> http://www.eset.com
>>>
>>>
>>>
>>>
>>> __________ Information from ESET NOD32 Antivirus,
>> version of virus
>>> signature
>>> database 4218 (20090705) __________
>>>
>>> The message was checked by ESET NOD32 Antivirus.
>>>
>>> http://www.eset.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!
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------------------------------
Message: 9
Date: Sun, 5 Jul 2009 22:16:22 +0000
From: kd8bxp@xxx.xxx
Subject: [amsat-bb] Re: dream your own sat
To: "Bob Bruninga" <bruninga@xxxx.xxx>, amsat-bb-bounces@xxxxx.xxxx
"John B. Stephensen" <kd6ozh@xxxxxxx.xxx>, kc6uqh@xxx.xxxxxxxxxxxxx
red'" <rupert.red@xxxx.xx>, amsat-bb@xxxxx.xxx
Message-ID:
<136324851-1246832180-cardhu_decombobulator_blackberry.rim.net-
1243688856-@xxxxxxx.xxxx.xxxx.xx.xxxxxxxxxx>
Content-Type: text/plain; charset="utf-8"
I had an idea of setting up a pager network. That could be used for national
or local emegrancy. Or just about anything else for that matter - my orignal
idea was for national and local emegrancy, dx reports, and weather. With the
added bonus of a personal I'd for yourself.
There is a man in MI doing this with his APRS group and emegancy coms now. My
idea what and is slightly different from his.
I could interconnect systems or not.
I like the idea of being able to text any call sign by just knowing the call
sign -
I never done it but doesn't DStar offer a way to do this? I know the dstar
system will route you to the last place it heard a call. If you wanted to
direct it to do so
It would or shouldn't be too hard to setup a way for someone to know the call
and have it routed to a pager. Of course then you would have to say something
like get on your radio or something. Since it is one way. But it could work
It is still an idea but at this point it is just an idea.
I moved the idea to a collabration site, not in front of my computer and for
the url - I have a link to on either
http://www.HamOhio.com/profiles/kd8bxp
Or http://73s.org/kd8bpx (look for the blog listed is this legal or something
like that)
LeRoy, KD8BXP
http://www.HamOhio.com
Sent on the Now Network? from my Sprint? BlackBerry
-----Original Message-----
From: "Bob Bruninga " <bruninga@xxxx.xxx>
Date: Sun, 5 Jul 2009 18:01:25
To: John B. Stephensen<kd6ozh@xxxxxxx.xxx>; <kc6uqh@xxx.xxx>; 'rupert
red'<rupert.red@xxxx.xx>; <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: dream your own sat
> Any interest by the Red Cross would not be in the
> satellite but in human volunteers that might come
> with it. Unfortunately, the LEO satellites that
> hams can afford generate little interest in this forum.
I wish we could some how better influence the dozens of cubesat satellites
being built with AX.25 packet comm systems to at least consider a backup
digipeater comm system. If just six of these allowed for a possibility of
user digipeating, we would have a constellation that would provide worldwide
text messaging capability from mobiles and handhelds with delays no more than
30 minutes.
What a fantastic emergency comm system we could have. If ten of them were
available, then the coverage would be nearly continuous.
Amateur Radio needs to recognize its trememdous legacy of over a century of
wireless text messaging and our ability to bring that connectivity to the
field any time anywhere. We simply need to link them together to meet our
overall "Universal Amateur Radio Text Messaging Initiative", that is, any ham,
any where, any time, able to text message any other ham anywhere using any
hardware device, commercial or amateur by callsign alone.
Please see www.aprs.org/aprs-messaging.html
I count over 2 dozen existing amateur radio text messaging systems few of
which are currently crossconnected. Most talk only within their own
constituents. APRS and some others are already cross connected at the email
level which then connects to cellphones and other wireless devices. So
crossconnecting at the APRS internetwork or at the email level is easy to do.
We just need all authors to consider transparent cross connection as a goal as
per the above web page.
This has already been done for all APRS satellites and even the ARISS system
when it came over the the Satellite APRS channel 145.825. When ARISS is in
packet mode, it enables text messaging and Email to and from the front panel
of any APRS radio in the world via our existing network of APRS ground
stations. See the downlinks on www.ariss.net
We have tried to get other packet satellites on that channel, SUNSAT, PCSAT1,
PCSAT2, ANDE, RAFT and ISS all of which supported this universal text
messaging. We need more, and longer lived satelites. And most any AX.25
cubesat could do it as a secondary mission. We need to look for opportunities
there.
We had GO32 also for a year or so until its recent demise, though it's
frequency was different.
Bob, WB4APR
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------------------------------
Message: 10
Date: Sun, 05 Jul 2009 22:59:29 +0000
From: n3tl@xxxxxxxxx.xxx
Subject: [amsat-bb] Original 13 Colonies - thanks to all!
To: AMSAT-BB@xxxxx.xxx
Message-ID:
<070520092259.13293.4A5130510000A835000033ED22230647029B0A02D2089B9A019C
04040A0DBF049BCC02@xxx.xxx>
Content-Type: text/plain
Hey everyone,
Thank you all for participating in the Original 13 Colonies special event. I
regret that we only had 11 of the 13 colonies active on the satellites, and
hope we can have them all for the 2010 event. It appears as though many
satellite operators were looking for the special call signs on virtually all
the satellites.
Here, as N3TL/K2G, I completed contacts on AO-7, AO-27, AO-51, FO-29, SO-50
and VO-52. I also digipeated a general greeting via packet through the ISS,
but did not complete a 2-way contact. My log to KU2US includes the following
details.
82 contacts that include:
24 states
2 Canadian provinces - Ontario and Quebec
3 DX entities - Honduras, Mexico and the U.K.
50 grid squares
Last Thursday, I got an email from Jim, G3WGM, asking whether I'd be
interested in tyring to make a contact with "the Motherland" during the
special event. We made it happen at 00:54 UTC on July 4th, from the
southernmost of the Original 13. Thanks, Jim, for staying up so late!
Thanks again to everyone for participating. Remember to visit Ken's page at
www.qrz.com/KU2US for all the details on getting a certificate.
73 to all,
Tim - N3TL/K2G - Georgia
------------------------------
Message: 11
Date: Sun, 5 Jul 2009 19:13:11 -0400
From: "Frank H. Bauer" <ka3hdo@xxxxxxx.xxx>
Subject: [amsat-bb] An alternative ... or ... competition !!!.
To: <amsat-bb@xxxxx.xxx>
Message-ID: <003601c9fdc6$2ff77bf0$8fe673d0$@xxx>
Content-Type: text/plain; charset="us-ascii"
All,
So that you all know, there is a lot of international discussion and dialog
going on right now on the next steps for ISS. The current international
commitment is to fly ISS to 2015. But given that several of the
international partners, most notably Europe and Japan, have just gotten
their modules on-orbit, there is discussion, dialog and debate on extending
ISS to 2020 and beyond. In the USA, some of this dialog is occurring
through the Obama-chartered Human Spaceflight Review Committee, let by Norm
Augustine, where they have a sub-group looking at ISS Schedule, ISS Utility
and ISS Cost. See: http://www.nasa.gov/offices/hsf/home/index.html
While the statement, below, might have been made, I would wait until all
the ISS Partners get together to modify their future ISS strategy in
writing. And remember that ISS has done a fantastic job of international
collaboration..they all (US, Russia, Europe, Canada, and Japan) all depend
upon each other to ensure a robust ISS system. So separating one segment
from the others will have great repercussions for all parties.
On another topic, WRT the Lunar ILN, if you read the solicitation, they are
discussing *15 kg* payloads. And these need to accomplish some scientific
objective to further lunar exploration. Given this, I do not think the ILN
is a viable AMSAT project.
73, Frank Bauer, KA3HDO
Message: 5
Date: Sun, 5 Jul 2009 12:46:08 +0200
From: John Hackett <archie.hackett@xxxxxxx.xxx>
Subject: [amsat-bb] An alternative ... or ... competition !!!.
To: <eu-amsat@xxxxxxxxxxx.xxx>
Cc: allan_gm1sxx@xxxxxxx.xxxx amsat-bb@xxxxx.xxx
Message-ID: <BLU141-W15D0416BC901BCBCAA5F4D912A0@xxx.xxx>
Content-Type: text/plain; charset="Windows-1252"
Ladies and Gentlemen,
For those that don't know it, The chief of
RosKosmos, the Russian Space Agency *confirmed* last week the Russian
intention to pull the plug on the ISS in the 2015 - 2020 timeframe and to
construct another dedicated Russian space station.
According to Anatoly Zak RosKosmos informed NASA of these plans 14 days ago.
The new Russian station is *NOT* intended to be a laboratory like the ISS
but more of an in-orbit contruction platform for future Mars-like and outer
space missions.
The station will comprise a maintainable 'ball' section with several docking
ports with attachable modules.
I propose that amateur radio satellite operators get together and form a
group to suggest/try to influence/impliment an ARISS type of project for
this space station.
A Strela type frame could be attached to the underside of the 'ball' and
since the station is planned for a Molinya type orbit the coverage would be
suitable for DX.
The planned orbit would put the station predominently over Russia - as
opposed to the current ISS equatorial orbit.
Personally, I would suggest an RS-10/11 RS-12/13 clone with a ROBOT ...
(read: propagation tester) - as these satellites were without the shadow of
a doubt the best for recruiting newcomers.
It would, in my opinion, be a viable concept and an alternative to some of
the latest 'ideas' of a transponder on the moon ... which wouldn't 'catch'
many potential newcomers but would (*IN MY OPINION*) only serve a few
dedicated 'experts' ... leading to the demise of amateur satellite
communications in general.
Comments, monies and praise to LA2QAA.
Criticisms, horsewhipping and flaming to GM1SXX.
73 John. <la2qaa@xxxxx.xxx>
Interested parties may read the following ...
............................................................................
....................................
The OPSEK project
By
2008, the Russian successor to the International Space Station, ISS, was
identified as Orbitalniy Pilotiruemyi Eksperimentalniy Kompleks, OPSEK, or
Orbital Manned Assembly and Experiment Complex in English.* Unlike previous
designs of Mir, Mir-2 and the ISS, the heart of the station would be a
four-ton ball-shaped node module.
Equipped with six docking ports, this relatively small and simple element
would be the only permanent element of the station. All other modules would
come and go as their lifespan and mission requires.
The initial architecture of the OPSEK complex could be built out of
modules originally planned for the Russian segment of the ISS. The exact
scenario of the OPSEK assembly would depend on the end of the ISS and the
readiness of the latest Russian modules.
According to a 2008 scenario, the MLM multipurpose module, the node module
and a pair of NEM power platforms could be first launched to the ISS in
2011, 2013 and 2014-2015, respectively. With the deorbiting of the ISS
looming around 2020, these modules could separate from the old outpost to
form the core of the new Russian station. Another, more controversial
scenario considered the separation of the practically entire Russian
segment, including the MIM-2 docking compartment and the Zvezda service
module, prior to the ISS deorbiting. In this case, the 20-year-old service
module would temporarily take a responsibility for the flight control of the
OPSEK, until its replacement with a 40-ton versatile core module, UMB,
launched by a next-generation rocket from yet-to-be built launch site in
Vostochny during 2020s.
The
separation of the Russian segment from the ISS would leave the rest of the
outpost without effective orbital maneuvering capabilities, leaving the
European ATV spacecraft as a likely candidate to perform the tasks of
attitude control and deorbiting. To achieve this the ATV would have to be
modified to enable its docking with the US segment of the ISS.
Depending
on the operational orbit selected for the OPSEK, it might be necessary to
change the orbital inclination of the modules departing the ISS and forming
the new station. The lowest inclination accessible from Vostochny is 51.7
degrees, while the ISS is orbiting the Earth with the inclination 51.6
degrees toward the Equator. It is estimated that one or two Progress cargo
ships would be necessary to push the modules from one inclination to
another.
From
official statements during 2008 and 2009, it is clear that the one of the
chief objectives of the OPSEK complex would be the support for expedition to
Mars. All major elements of the Martian expeditionary complex, such as main
habitation module, Mars lander and nuclear-powered space tug would dock to
the station before its departure from the low-Earth orbit toward Mars. The
Martian expedition would at the OPSEK as well.
The station would also play a similar role in lunar exploration.
Reusable space tugs could link OPSEK with the Lunar Orbital Station, LOS, in
orbit around the Moon, thus creating a transport chain for a permanent lunar
base. Such tasks as servicing of modular satellites by orbital tugs based
at the OPSEK complex were also cited.
In
broader terms, TsNIIMash research institute, a chief strategist of the
Russian space agency, formulated the OPSEK concept as a foundation of the
nation's space strategy. By 2009, the new station was seen as a cornerstone
of a new space exploration plan, which extended four decades into the 21st
century. An ambitious program apparently included manned missions to the
Moon, Mars and beyond. (344)
Cooperation with Europe and the US
In
2008, Russian plans for maintaining presence in the low-Earth orbit in
general and the creation of a successor to the ISS in particular had been
met enthusiastically in Europe. As ESA had little hope to match the US
effort to return to the Moon at the beginning of the 21st century,
preserving a destination in the low-Earth orbit seemed critical for the
political support of the manned space flight on the continent.
In
June 2009, Simonetta Di Pippo, ESA director of human space flight told the
editor of RussianSpaceWeb.com that she shared the Russian vision of the
future space station as a platform for deep space missions. "I have
continuous consultations with officials in Russia. We meet every month,
month and a half, and now we are going to start jointly, the study how to
proceed beyond 2025, Di Pippo said, ..."and we have a common idea that we
would like to preserve presence in the lower orbit. We are studying
different scenarios, whether we need permanent presence or, maybe, a
human-tended capability, and we can end up with a totally different solution
in the end, but I don?t believe we can leave Earth orbit."
Di Pippo also said that although current NASA plans for return to the
Moon reserved no essential role for the station, it could change in the
future. "Even on the NASA side, they have too many different developments
(associated with the Earth orbit), including commercial involvement, which
they can not immediately give up," Di Pippo said.
By the end of 2010,
all partners in the ISS project were expecting to agree on the extension of
the ISS lifespan from 2015 to 2020 or even 2025. Once end of life for the
ISS was decided an active planning for post-ISS manned space flight could
begin in Russia, Europe and possibly the US.
------------------------------
_______________________________________________
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!
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End of AMSAT-BB Digest, Vol 4, Issue 320
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