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CX2SA > SATDIG 18.10.12 20:44l 863 Lines 31724 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Re: LEO to HEO (Joshua)
2. Re: OH2AUE P3E transponder demo video (i8cvs)
3. Re: OH2AUE P3E transponder demo video (wa4hfn@xxxxxxx.xxxx
4. Montagues & Capulets (was: FM vs SSB, HEO vs LEO, etc)
(Clayton Coleman)
5. Re: OH2AUE P3E transponder demo video (John Becker)
6. Re: OH2AUE P3E transponder demo video (Gordon JC Pearce)
7. Re: OH2AUE P3E transponder demo video (Bryce Salmi)
8. Re: shoe box sats (Edwin M. "EMike" McCardel, KC8YLD)
9. Re: AMSAT-BB Digest, Vol 7, Issue 346 (Tom Gentry)
10. Re: Montagues & Capulets (was: FM vs SSB, HEO vs LEO, etc)
(Bob- W7LRD)
11. Re: Amsat Journal? (Gould Smith)
12. Re: Montagues & Capulets (was: FM vs SSB, HEO vs LEO, etc)
(George Henry)
13. Re: Amsat Journal? (ryan woods)
14. Re: shoe box sats (JoAnne Maenpaa)
----------------------------------------------------------------------
Message: 1
Date: Thu, 18 Oct 2012 11:21:06 -0400
From: Joshua <jarvideo@xxxxx.xxx>
To: "kk5do@xxxxx.xxxx <kk5do@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: LEO to HEO
Message-ID: <CCA1AE99-C287-4C66-8204-1A1C0015B9CC@xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
You make an excellent point, but I think you are assuming that the sat
would be equipped with a solid fuel or other form of combustible/volatile
propulsion. A cold-gas microthruster along with some sort of variable
magnetic stabilization could in theory work around any liability concerns as
liquid nitrogen, helium, etc can't explode under most conditions. I'm not
sure about size requirements/ restrictions however. I'm far from an expert
but I would guess if something like this could make it into orbit, the
thruster would provide enough power to nudge the sat up and then use the
planets gravity to acelerate it out to at least a MEO.
It might even be able to do something like this in something as small as a
3U cubesat.
Josh, KJ4VYR
On Oct 18, 2012, at 10:39 AM, Bruce <kk5do@xxxxx.xxx> wrote:
> good question and of course pondered and explored in the past. in order to
move a satellite, you have to have some sort of propulsion for it. weather a
kick start motor or plasma ejector or something. all of these require some
type of 'fuel'. now, that being said, 'fuel' takes up a lot of space,
requires special storage containers that are heavy and... no one will let
you put fuel on their rocket and when your fuel goes bang by accident their
entire mission is gone. if we were to pay for a launch the price of having
the fuel would be included in the launch company's quote. we would also have
to have insurance to cover a catastrophic event for them, mucho expensive.
>
> all said and done, yes, you can launch into an orbit and with the correct
size motor/propulsion device, you could move it to where you want it. just
not feasible. just like buying a grand piano, living on the 10th floor.
can't go up stairs, can't go up elevator, if you want to get a crane or
helicopter, you can get it there but then you have to bust out the side of
the building. was the $100,000 trip to get that piano into your apartment
worth the $5,000 cost of the piano?
>
> 73...bruce
>
> On 10/18/2012 7:44 AM, Joshua wrote:
>> Morning folks,
>> I'm a relatively new ham and started following amsat only a few months so
forgive something of a novice question.
>>
>> The biggest trouble I see the community hitching a ride to a high orbit
although low orbits seem to be easy to get. So my question is this, who says
we can't launch a sat in LEO and design it to move itself up to a higher
orbit? I mean if NASA can build probes capable of reaching mars, it stands
to reason we can build a bird to move only a few thousand miles.
>>
>> Thanks,
>> Joshua Abraham, KJ4VYR
>> _______________________________________________
>> 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
>>
>
>
> --
>
> Bruce Paige, KK5DO
> AMSAT Director Contests and Awards
> ARRL Awards Manager (WAS, 5BWAS, VUCC), VE
> Houston AMSAT Net - Wed 0100z on Echolink - Conference *AMSAT*
> Also live streaming MP3 at http://www.amsatnet.com
> Podcast at http://www.amsatnet.com/podcast.xml or iTunes
> Latest satellite news on the ARRL Audio News
> http://www.arrl.org
>
> AMSAT on Twitter http://www.twitter.com/amsat
>
------------------------------
Message: 2
Date: Thu, 18 Oct 2012 17:28:20 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
To: "Gordon JC Pearce" <gordonjcp@xxxx.xxx>, "Amsat - BBs"
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: OH2AUE P3E transponder demo video
Message-ID: <000001cdad45$7984afe0$0401a8c0@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
----- Original Message -----
From: "Gordon JC Pearce" <gordonjcp@xxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Thursday, October 18, 2012 8:47 AM
Subject: [amsat-bb] Re: OH2AUE P3E transponder demo video
> What I am referring to is linear transponders. They're heavy and
> consume a lot of power. We need to either devise a new way of doing
> that, that doesn't involve heavy inefficient linear amplifiers, or stick
> to something like FM or GMSK where a little lightweight PA that doesn't
> dissipate most of the input power as heat will do the job.
>
> It depends what you're trying to achieve. I'll respond to Domenico's
> comments here, too.
>
> Gordon JC Pearce MM0YEQ
>
Hi Gordon, MM0YEQ
Linear transponder can be built not heavy not to consume a lot
of power and not too costly.
Read please the following advise of William PE1RAH to my friend
Roberto IW5BSF for a linear transponder designed for Ham radio
frequencies to be integrated in CubeSat projects, balloon missions
or terresterial repeaters.
http://www.leijenaarelectronics.nl/leijenaar_electronics_009.htm
Dear Roberto,
The transponder I sell as a complete (pre-made) package in which the
programmer and software all is included.
It is made of very small SMD parts, 0402 size, that can only be soldered
with profesional reflow oven (which I use).
The whole package includes:
Transponder on profesionally milled evaluation board (fully tested) ,
power supply, programmer included all cables, example source code,
and manuals.
The transponder will be delivered with a testing report.
I can deliver it for the price of 1800 Euro (excluded shipping cost).
The transponder will be operational in a matter of minutes (the time to
connect antenna cables and power supply).
Manufacturing time is about 2 weeks, because of testing time to guarenty
the quality.
Datasheet and information you can find on my website:
www.leijenaarelectronics.nl
Thank you for your interrest and kind regards,
William Leijenaar, PE1RAH
Leijenaar Electronics
Bergmanshofweg 2
5926 RH Venlo
The Netherlands
---
------------------------------
Message: 3
Date: Thu, 18 Oct 2012 15:34:09 +0000 (UTC)
From: wa4hfn@xxxxxxx.xxx
To: Gus 8P6SM <8p6sm@xxxx.xxx>
Cc: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: OH2AUE P3E transponder demo video
Message-ID:
<1944288499.665663.1350574449312.JavaMail.root@xxxxxxx.xxxxxxxxxxx.xx.xxxx.xxx
xxxx.xxx>
Content-Type: text/plain; charset=utf-8
Well all this sounds great , BUT does Amsat have the money to put anything
in space If so why has it not been done. As I said once before the cubsats
that go beep beep have not helped me or anyone get a single new grid.. Can
anyone at Amsat convince the schools or the rocket folks to let a ham
satellite ride along with any launch? Im am sure that there are alot of
satellite users out there who careless about the beepers. Looking to the
future I would think that Amsats support may drop off some without
something positive for the supporters to lock on to ( A DATE )
I just don't understand the need for beepers Im sorry
Damon
----- Original Message -----
From: "Gus 8P6SM" <8p6sm@xxxx.xxx>
To: "Gordon JC Pearce" <gordonjcp@xxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Sent: Thursday, October 18, 2012 9:55:01 AM
Subject: [amsat-bb] Re: OH2AUE P3E transponder demo video
On 10/18/2012 02:47 AM, Gordon JC Pearce wrote:
> On 18/10/12 03:28, Gus 8P6SM wrote:
>> On 10/17/2012 05:38 PM, Gordon JC Pearce wrote:
>>> We're going to have to try coming up with clever satellites, rather than
>>> flying a bent-pipe box the size of a fridge. No-one is going to want to
>>> lift that, without us paying full price.
>>
>> I may not be 100% on the 'bent pipe' definition, but if it means hams
>> 'talk' on the UP and other hams 'listens' on the DOWN, then that's what
>
> What I am referring to is linear transponders. They're heavy and
> consume a lot of power. We need to either devise a new way of doing
> that, that doesn't involve heavy inefficient linear amplifiers, or stick
> to something like FM or GMSK where a little lightweight PA that doesn't
> dissipate most of the input power as heat will do the job.
A full-duty-cycle FM transponder that eats up the entire bandwidth of
the satellite to allow a single ham to communicate strikes me as far
less sensible than an efficient linear transponder that allows multiple
simultaneous contacts and does not run the PA at full duty cycle.
But never the less, I don't really care what the operating mode for
communication is, so long as there actually *IS* an operating mode for
communication. Satellites that DON'T allow hams to communicate are not
of any interest to me, and (IMHO) are not relevant in any discussion of
AMATEUR satellites.
>> we need. Whether it be the size of a fridge of a matchbox, if ham radio
>> operators can't use it to communicate, then it's pretty pointless. It
>
> If it's big it won't fly, unless you pay for the whole flight. Have you
> noticed how airlines have stopped carrying children for free, too?
And most people have long ago stopped whining about it and now simply
pay for their children to fly. So let's pay for a flight and stop
whinging about how we can't get a free one.
>> don't matter how much telemetry it sends, how many LEDs it blinks, how
>> clever the beacons, or what purty pictures it downlinks. If hams can't
>> use it to QSO, then why bother?
>
> It depends what you're trying to achieve. I'll respond to Domenico's
> comments here, too.
>
> Most satellites are not built by radio amateurs. They're not there so
> you can talk to your friends. They are built so the engineering
> students that will build the satellites and spacecraft of the future.
Most satellites have nothing whatsoever to do with the engineering
students of the future. But we don't get all goo-goo eyed over the
launch of some military spy-sat because it has nothing to do with
amateur radio. And neither do most of the cubesats.
> Like it or not, amateur radio is a secondary service on 70cm. We don't
> own that chunk of band. If you want to work a band free from "beep
> sats", stick to 2m and good luck with your build.
Uh-oh! As a recent posting leads us to understand, UMSATS TSat-1 uses
437 *and* 145 MHz amateur radio bands. Is the 2 meter band a secondary
service as well?
--
73, de Gus 8P6SM
The Easternmost Isle
_______________________________________________
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: Thu, 18 Oct 2012 10:46:23 -0500
From: Clayton Coleman <kayakfishtx@xxxxx.xxx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Montagues & Capulets (was: FM vs SSB, HEO vs LEO,
etc)
Message-ID:
<CAPovOweJ6J6ebY7num4odutMZX5oZ64Z3QDg3ztUXSPGNpti=g@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
Regularly we see passionate emails about the following subjects:
- Cubesats vs microsats
- FM vs SSB
- HEO vs MEO vs LEO
- Pacsats vs voice
- Easy vs hard sats
One desire stands out as a common element in most of these heated
email threads. That is the desire for a satellite to facilitate 2-way
communications. I happen to find that aspect of satellites most
enjoyable whether on an FM, SSB, or digital bird.
You can keep pimping your ideas for the perfect satellite to the
Internet OR get with an existing program that is working to launch a
transponder. Sending emails over and over stating how beep-beeps
don?t put entries in your logbook doesn?t contribute to the launch of
new satellites. Do something productive to contribute (or send
money.)
73
Clayton
W5PFG
------------------------------
Message: 5
Date: Thu, 18 Oct 2012 09:34:48 -0500
From: John Becker <w0jab@xxxxxxxxx.xxx>
To: AMSAT-BB@xxxxx.xxx
Subject: [amsat-bb] Re: OH2AUE P3E transponder demo video
Message-ID: <5.2.0.9.2.20121018093100.033fc930@xxxx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
At 10:43 PM 10/17/2012, you wrote:
>Wow, a narrow self centric view of the world:
But he has a point. What is going to be done when every possible
orbit slot is full is "dead" no longer can be used satellites?
When the sun light is blocked it will be to late.
------------------------------
Message: 6
Date: Thu, 18 Oct 2012 17:12:28 +0100
From: Gordon JC Pearce <gordonjcp@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: OH2AUE P3E transponder demo video
Message-ID: <50802A6C.60002@xxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 18/10/12 16:34, wa4hfn@xxxxxxx.xxx wrote:
> Well all this sounds great , BUT does Amsat have the money to put anything
in space If so why has it not been done. As I said once before the cubsats
that go beep beep have not helped me or anyone get a single new grid.. Can
anyone at Amsat convince the schools or the rocket folks to let a ham
satellite ride along with any launch? Im am sure that there are alot of
satellite users out there who careless about the beepers. Looking to the
future I would think that Amsats support may drop off some without
something positive for the supporters to lock on to ( A DATE )
Gas, grass or ass - no-one rides for free. If you want to fly a cubesat
you'll need to scrape up the 30 grand or so yourself. It's not *that*
expensive, really.
> I just don't understand the need for beepers Im sorry
I just don't understand the need for "hard sats" that require
computer-controlled rotators and tuning to work. If I want to sit in
front of the computer and talk to someone half a planet away, I use Skype.
You know what, I'm just about done with this list. No-one seems to be
keen to discuss anything other than their pipe dream of a HEO sat the
size of a Transit van with SSB from 80m to 24GHz and no real idea of how
to fund it, or alternatively how to install the right driver in Windows
to stop their rotator controller showing up as a USB-programmable
personal massage device.
Can we *please* have some practical discussion of how we can move things
forward? We're going to need money, we're going to need satellites, and
we're going to need someone to bring the two together at just the right
moment to get them on a flight. It can't possibly be *that* hard.
--
Gordon JC Pearce MM0YEQ
------------------------------
Message: 7
Date: Thu, 18 Oct 2012 13:09:37 -0400
From: Bryce Salmi <bts2637@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: OH2AUE P3E transponder demo video
Message-ID:
<CAN5j0sr0ekfG7rx+PPeyt_pvU+JmNLVs6Tt9HZh3NUp4mj72wg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
AMSAT-BB,
I usually don't comment on the list but this is the third or fourth
email string in the last month that brought up the HEO vs. LEO argument. I
am relatively new to AMSAT but even then, have been working hard to learn
its history, getting to know who is involved, and started volunteering to
help the organization build the FOX series of satellites. I'm excited to be
a part of it. Before people keep going on arguing that AMSAT is or is not
developing the right technology to suit their needs or to even launch a
satellite into orbit. I urge you to find out what AMSAT is currently
working towards.
I have linked to an interview with Barry Baines, WD4ASW, on the
HamRadioNow youtube channel. The link below links directly to minute 18:00
of the interview. To everyone not currently up-to-date with why AMSAT is
developing portions of the FOX project please watch from minute 18:00 to
minute 23:00.
https://www.youtube.com/watch?feature=player_detailpage&v=3o_PV2b9F6g#t=1076s
I hope to keep learning about AMSAT, keep volunteering my time and
resources, and to keep promoting amateur radio. As a college engineering
student (senior) and as someone who has worked in the aerospace industry
(R&D of launch vehicles and satellites) I can understand why the colleges
need to educate future engineers, why launch opportunities cost so much,
and why AMSAT is on the direction it is currently heading. Again, I'm not
an expert in these areas and I have much to learn, but I have the
background to at least understand some of the reasoning behind these
topics. I look at many of the satellites that people talk about on this
list, wishing they were still working, and realizing many of them were in
operation before I was even born. Maybe we will see similar satellites in
orbit one day, I sure hope so. Launch costs need to come down. Thank you
for your time, I look forward to meeting all on the air one day!
Sincerely,
Bryce Salmi
KB1LQC
On Tue, Oct 16, 2012 at 12:55 AM, JoAnne Maenpaa <k9jkm@xxxxxxx.xxx> wrote:
> Hello,
>
> > Newer technology and more advanced modes can be made available for
> > experiment, either simultaneously, on (say) bands L, S, C, etc, and
> > also on more accessible bands (U, V) by having the bird switch mode
> > accordingly ... As far as meshed networks ...
>
> Like these designs?
>
> Proposed in 2003 -
> http://www.cnssys.com/files/amsat/cc_amsat.pdf
> Proposed in 2004 -
> http://www.cnssys.com/files/amsat/cc-revisited.pdf
> Proposed in 2006 -
> http://www.cnssys.com/files/amsat/SDX_and_Future_AMSAT_Missions.pdf
>
> Thing is ... everyone knows we've been looking for a suitable launch since
> the dates of these papers. Other cool designs live in the Symposium
> Proceedings for AMSAT-Eagle and the Phase IV GEO-Rideshare projects.
>
> Some of the good old days are archived in the "Historical AMSAT-NA
> Symposium
> Proceedings" -
> http://www.klofas.com/amsat_symposium/
>
> --
> 73 de JoAnne K9JKM
> k9jkm@xxxxx.xxx
>
>
> _______________________________________________
> 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: Thu, 18 Oct 2012 13:27:24 -0400
From: "Edwin M. \"EMike\" McCardel, KC8YLD" <kc8yld@xxxx.xxx>
To: Gus 8P6SM <8p6sm@xxxx.xxx>
Cc: Amsat - BBs <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: shoe box sats
Message-ID:
<CAM5+souW-GTULeM-nVTvJgujQL=zTu_DcR2VrCQtzORKGqnpsQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
Trevor, M5AKA, posted this way back in September
The September issue of the free publication Sat Magazine features an
article on CubeSat Microthrusters - page 38
MIT Developed ?Microthrusters? Could Empower Small Sats
http://www.satmagazine.com/2012/SM_Sept2012.pdf
73 Trevor M5AKA
EMike
E. Michael McCardel, KC8YLD
Ohio Section Affiliated Club Coordinator, ARRL
AMSAT-Edu Moderator
Knox Count Ohio, ARRL PIO
Knox County / MVARC VE Coordinator
NO CODE REQUIRED
When All Else Fails... There's Amateur Radio
Learn more via www.ARRL.org
On Thu, Oct 18, 2012 at 11:01 AM, Gus 8P6SM <8p6sm@xxxx.xxx> wrote:
> On 10/18/2012 06:55 AM, Nick Pugh wrote:
> > I believe the amateur community is well served by the shoe box
> > designers. If we want amateur payloads we should do
> >
> > 1. Have off the shelf radios in their form factor that are very
> cheap
>
> I agree. I'd even say very cheap as in completely free.
>
> > 2. Be ready to mentors most school lack radio resources
>
> I agree again. Sign me up.
>
> > 3. Team up with schools that are developing propulsion systems (
> our
> > ride to HEO)
>
> Three times is a charm!
>
> --
> 73, de Gus 8P6SM
> The Easternmost Isle
> _______________________________________________
> 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: Thu, 18 Oct 2012 12:50:22 -0500
From: Tom Gentry <t.gentry@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: AMSAT-BB Digest, Vol 7, Issue 346
Message-ID: <5080415E.4070609@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Rubbish! I built my own antennae from wood and welding rod, cut my own
phasing lines and built a computer from scraps to run the tracker
software. I did have an AZ-EL motor set from the 80s but it had to have
the controller rebuilt and the case crack repaired. My old radio FT726
doesn't have computer control so I am building a softrock SDR station
with transverters for 2m and 70cm and my goal is to have it track and
adjust for doppler while I make contacts whilst I am busy during a 7-10
min LEO pass.
So far I have learned about Yagi antenna design, transmission line
theory and practice, Smith charts (impedance and admittance), software
defined radio theory, full duplex SDR radios and multi-user
transponders, so if that's what you call throwing technology at the
problem then color me guilty
and PO.d at your comment.
73,
Tom K5VOU
On 10/18/2012 10:00 AM, amsat-bb-request@xxxxx.xxx wrote:
> Message: 2
> Date: Wed, 17 Oct 2012 22:38:36 +0100
> From: Gordon JC Pearce<gordonjcp@xxxx.xxx>
> To:amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Re: OH2AUE P3E transponder demo video
> Message-ID:<507F255C.9030008@xxxx.xxx>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
<snip> In any case, the challenge has changed. I don't see any real
challenge in the "hard sats", because the "hard sat" brigade all seem to
use massive aerial arrays, with computer-controlled steering and tuning.
I don't see what's "hard" about it - it's just throwing technology and
no real skill at the problem. Once you've figured out the mysteries of
the crappy proprietary software that people use to steer the aerials and
tune the rig, it's point-and-shoot. The FM sats can be worked with
something as simple as a dual-band handie and a homebrew crossband pair
of Yagis - and a great deal of operator skill. No, the challenge today
is this - are you ready? The challenge is: Get something flying, for
less than the GDP of a small nation. There, I've said it. It's down to
money. You know what else I'm going to say? There is almost certainly
never going to be another amateur HEO satellite. There, I've said
*that*, too. Want to know why? Because we're a tightfisted bunch and
no-one is going to fly us for very nearly free. The HEO crowd have some
amazing technology, but it's going to cost a fortune - a very large
fortune - to fly these Death Star-sized satellites *at all*, never mind
into HEO. The future is small satellites, where we will have to cram as
much radio into a tiny cubesat payload as we can. Even then it's going
to be expensive, so we're going to need to look at countries that are
developing their space programme to get launches - and that's going to
be India, Pakistan, Iran if they get their shit together, maybe Israel
if we can get them interested in anything other than "observation"
satellites and probably one or two others. Maybe some wealthyish African
countries will get in on it, like the DRC or Kenya. We're going to have
to try coming up with clever satellites, rather than flying a bent-pipe
box the size of a fridge. No-one is going to want to lift that, without
us paying full price.
> -- Gordon JC Pearce MM0YEQ
------------------------------
Message: 10
Date: Thu, 18 Oct 2012 17:52:03 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
To: Clayton Coleman <kayakfishtx@xxxxx.xxx>
Cc: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Montagues & Capulets (was: FM vs SSB, HEO vs
LEO, etc)
Message-ID:
<1499392195.111689.1350582723996.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx.xxxx
xxx.xxx>
Content-Type: text/plain; charset=utf-8
Clayton et al. 100% correct...The lowest common denominator is cost...If
you're not donating your time and dollars you have lost your credibility to
complain...somewhere along this latest diatribe it was mentioned we're a
"cheap bunch". "Home brew" has it's limits. Our personal predilections are
irrelevant to the grander scheme of things. I have suggested a few times we
all go through our shacks and sell off that "get around to it" project, and
send the money to the AMSAT of your choice. I have sold stuff, given talks
to clubs, had a booth at hamfests, regularly have automatic funds sent to
AMSAT. You're either in or you're not.
73 Bob W7LRD
Seattle
----- Original Message -----
From: "Clayton Coleman" <kayakfishtx@xxxxx.xxx>
To: "AMSAT" <amsat-bb@xxxxx.xxx>
Sent: Thursday, October 18, 2012 8:46:23 AM
Subject: [amsat-bb] Montagues & Capulets (was: FM vs SSB, HEO vs LEO, etc)
Regularly we see passionate emails about the following subjects:
- Cubesats vs microsats
- FM vs SSB
- HEO vs MEO vs LEO
- Pacsats vs voice
- Easy vs hard sats
One desire stands out as a common element in most of these heated
email threads. That is the desire for a satellite to facilitate 2-way
communications. I happen to find that aspect of satellites most
enjoyable whether on an FM, SSB, or digital bird.
You can keep pimping your ideas for the perfect satellite to the
Internet OR get with an existing program that is working to launch a
transponder. Sending emails over and over stating how beep-beeps
don?t put entries in your logbook doesn?t contribute to the launch of
new satellites. Do something productive to contribute (or send
money.)
73
Clayton
W5PFG
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------------------------------
Message: 11
Date: Thu, 18 Oct 2012 14:11:45 -0400
From: "Gould Smith" <gouldsmi@xxxxxxxxx.xxx>
To: "ryan woods" <kd8atf@xxxxx.xxx>, <Amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Amsat Journal?
Message-ID: <E69ABBAA7DD740CE918375E3D34BCE10@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hello Ryan,
We are aware of the lack of timely AMSAT Journals and apologize to the
membership. We have had some difficulties getting the Journals put together
during this transition period between editors. We discuss this every month
during the executive teleconferences. We are working on a number of
different approaches and will certainly discuss it again during the BoD
meeting next week. Expect some word soon.
Thank you for your patience.
73,
Gould, WA4SXM
AMSAT VP User Services
-----Original Message-----
From: ryan woods
Sent: Wednesday, October 17, 2012 9:33 PM
To: Amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Amsat Journal?
What is going on with the journal I have not received one in a long
time..... I always enjoyed reading it..... I know im still okay on my dues
are up to date because I joined this year after moving out of my parents
house.
Sent from Yahoo! Mail on Android
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
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------------------------------
Message: 12
Date: Thu, 18 Oct 2012 11:18:18 -0700 (PDT)
From: George Henry <ka3hsw@xxx.xxx>
To: AMSAT <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Montagues & Capulets (was: FM vs SSB, HEO vs
LEO, etc)
Message-ID:
<1350584298.49186.YahooMailRC@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
The saying, "if you're not part of the solution, you're part of the problem"
comes to mind...?
George, KA3HSW
(Spend a buck every week on a lottery ticket in AMSAT's name:? one of us may
get
lucky!)
----- Original Message ----
> From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
[snip]
>
> Clayton et al. 100% correct...The lowest common denominator is cost...If
you're
>not donating your time and dollars you have lost your credibility to
>complain...somewhere along this latest diatribe it was mentioned we're a
"cheap
>bunch". "Home brew" has it's limits. Our personal predilections are
irrelevant
>to the grander scheme of things. I have suggested a few times we all go
through
>our shacks and sell off that "get around to it" project, and send the money
to
>the AMSAT of your choice. I have sold stuff, given talks to clubs, had a
booth
>at hamfests, regularly have automatic funds sent to AMSAT. You're either in
or
>you're not.
>
> 73 Bob W7LRD
> Seattle
>
------------------------------
Message: 13
Date: Thu, 18 Oct 2012 11:39:38 -0700 (PDT)
From: ryan woods <kd8atf@xxxxx.xxx>
To: "Amsat-bb@xxxxx.xxxx <Amsat-bb@xxxxx.xxx>,
"gouldsmi@xxxxxxxxx.xxxx <gouldsmi@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Amsat Journal?
Message-ID:
<1350585578.99533.androidMobile@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Ok thank you Gould can't wait to start getting them again!
Sent from Yahoo! Mail on Android
------------------------------
Message: 14
Date: Thu, 18 Oct 2012 13:39:58 -0500
From: "JoAnne Maenpaa" <k9jkm@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: shoe box sats
Message-ID: <002e01cdad5f$fa830000$ef890000$@xxx>
Content-Type: text/plain; charset="us-ascii"
Hey ya'll,
EMike mentioned:
> features an article on CubeSat Microthrusters - page 38
That is a nice article. SatMagazine is pretty cool for free. There is some
thruster information available on the web also.
I know the AMSAT-UK web has done a wonderful job of archiving satellite
missions thanks to Trevor's amazing efforts. A search on uk.amsat.org with
the keyword "thrust" brought me to this page:
http://www.uk.amsat.org/?s=thrust
When you have thrust you need attitude control to know your spacecraft's
position/orientation and keep it there. Only when you are pointing to the
right spot in the sky it would be OK to light the engine.
An interesting aside to the AMSAT Fox-1 project is the on-board student
experiment. The Penn State University AMSAT sponsored senior design project
is a 3-axis MEMs gyro sensor to measure satellite spin rate, spin direction
and wobble about magnetic axis. First steps toward attitude control in a
cubesat.
Perhaps future Foxes will host a microthruster experiment.
The 2012 Dayton Forum Fox Project slides even mention future launch
opportunities for the add-on Fox-like fleet.
See: http://www.amsat.org/amsat-new/fox/AA2TX_Dayton2012V3.ppt
--
73 de JoAnne K9JKM
k9jkm@xxxxx.xxx
------------------------------
_______________________________________________
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 347
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