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CX2SA > SATDIG 19.10.12 20:03l 669 Lines 20944 Bytes #999 (0) @ WW
BID : AMSATBB7349
Read: GUEST
Subj: AMSAT-BB-digest V7 349
Path: IZ3LSV<IK2XDE<PY1AYH<PY1AYH<CX2SA
Sent: 121019/1902Z @:CX2SA.SAL.URY.SA #:3320 [Salto] FBB7.00e $:AMSATBB7349
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: shoe box sats - video on microthrusters (JoAnne Maenpaa)
2. CAS-2A1 and CAS-2A2 Linear Transponder Amateur Radio
Satellites (Trevor .)
3. Re: OH2AUE P3E transponder demo video (i8cvs)
4. Re: CAS-2A1 and CAS-2A2 Linear Transponder Amateur Radio
Satellites (Bob- W7LRD)
5. Re: Amsat Journal? (Glen Zook)
6. Re: CAS-2A1 and CAS-2A2 Linear Transponder Amateur Radio
Satellites (Gus 8P6SM)
7. Re: LEO to HEO (STeve Andre')
8. Re: LEO to HEO (Gus 8P6SM)
9. Re: LEO to HEO (Zilvinas, LY2SS)
10. Re: LEO to HEO (Graham Shirville)
11. FitSat Visual (Kevin Deane)
12. Re: FitSat Visual (tanaka@xxx.xx.xxx
13. FITSAT 5.84GHz received (Mineo Wakita)
14. Job openings working for me (Robert McGwier)
15. APRS for JOTA, Everywhere! (Robert Bruninga)
16. Re: FITSAT 5.84GHz received (Mike Seguin N1JEZ)
----------------------------------------------------------------------
Message: 1
Date: Thu, 18 Oct 2012 14:30:47 -0500
From: "JoAnne Maenpaa" <k9jkm@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: shoe box sats - video on microthrusters
Message-ID: <003d01cdad67$13c385b0$3b4a9110$@xxx>
Content-Type: text/plain; charset="us-ascii"
There is video on cubesat microthrusters from the 2012 AMSAT-UK Colloquium:
- Go to http://www.batc.tv/
- Click on "Film Archive"
- Select "AMSAT 2012" in Category box and click on Select Category
- Select 012 - STRaND-2 presentation in Stream box and click on Select
Stream
- Click the > button on the video player window
The audio is very low for the first minute but it becomes audible in just a
bit.
--
73 de JoAnne K9JKM
k9jkm@xxxxx.xxx
------------------------------
Message: 2
Date: Thu, 18 Oct 2012 21:45:33 +0100 (BST)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] CAS-2A1 and CAS-2A2 Linear Transponder Amateur
Radio Satellites
Message-ID:
<1350593133.67346.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
I like the look of these two satellites.
See http://www.uk.amsat.org/?p=11108
73 Trevor M5AKA
AMSAT-UK http://www.amsat-uk.org/
----
------------------------------
Message: 3
Date: Thu, 18 Oct 2012 22:53:15 +0200
From: "i8cvs" <domenico.i8cvs@xxx.xx>
To: "Amsat - BBs" <amsat-bb@xxxxx.xxx>, "R Oler"
<orbitjet@xxxxxxx.xxx>
Subject: [amsat-bb] Re: OH2AUE P3E transponder demo video
Message-ID: <000001cdad73$23fc6440$0401a8c0@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Robert, WB5MZO
I don't believe that the linear transponder built and sold by PE1RAH for
a price of 1800 Euro is a flight space ready device because normally
it need to be tested at minimum into a vacum chamber at low and high
temperature and also vibration test and so on to be qualified for a flight
space launch.
73" de
i8CVS Domenico
> ----- Original Message -----
> From: R Oler
> To: domenico.i8cvs@xxx.xx
> Sent: Thursday, October 18, 2012 8:10 PM
> Subject: RE: [amsat-bb] Re: OH2AUE P3E transponder demo video
>
>
> Is the cost you mentioned for a flight space ready device? Robert
> WB5MZO
>
>
> > From: domenico.i8cvs@xxx.xx
> > To: gordonjcp@xxxx.xxxx amsat-bb@xxxxx.xxx
> > Date: Thu, 18 Oct 2012 17:28:20 +0200
> > Subject: [amsat-bb] Re: OH2AUE P3E transponder demo video
> >
> > ----- 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: 4
Date: Thu, 18 Oct 2012 21:03:20 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
To: "Trevor ." <m5aka@xxxxx.xx.xx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: CAS-2A1 and CAS-2A2 Linear Transponder Amateur
Radio Satellites
Message-ID:
<2019387326.114498.1350594199997.JavaMail.root@xxxxxxx.xxxxxxxxxx.xx.xxxx.xxxx
xxx.xxx>
Content-Type: text/plain; charset=utf-8
ground-bird-bird-ground..an interesting endeavor..I believe there were some
RS sats, or maybe some others (senior moment) back in the day this could be
done on. Great to see some of the money going to China will benefit some of
us.
73 Bob W7LRD
----- Original Message -----
From: "Trevor ." <m5aka@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Sent: Thursday, October 18, 2012 1:45:33 PM
Subject: [amsat-bb] CAS-2A1 and CAS-2A2 Linear Transponder Amateur Radio
Satellites
I like the look of these two satellites.
See http://www.uk.amsat.org/?p=11108
73 Trevor M5AKA
AMSAT-UK http://www.amsat-uk.org/
----
_______________________________________________
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: Thu, 18 Oct 2012 15:07:31 -0700 (PDT)
From: Glen Zook <gzook@xxxxx.xxx>
To: Gould Smith <gouldsmi@xxxxxxxxx.xxx>, ryan woods
<kd8atf@xxxxx.xxx>, "Amsat-bb@xxxxx.xxxx <Amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Amsat Journal?
Message-ID:
<1350598051.35427.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
>From what I have seen, a good part of the problem is not having an ample
backlog of articles suitable for publication. ?There are numerous reasons
for this, but the biggest problem is that not enough members are submitting
articles for publication! ?I did write an article on this very subject which
was published a few issues back. ?Personally, I can contribute articles.
?Unfortunately, since I have not been "on the cutting edge" of technology
for some time, anything that I write would have to be historical and so forth.
I have been "around" for a LONG time! ?Have been a member of AMSAT since the
first month it was formed. ?Therefore, I have seen the newsletter go through
several transformations in content and format. ?Some of those
transformations were better than others. ?However, since AMSAT is a
voluntary organization, the quality of both the content and format of the
newsletter is wholly dependent on the quality of articles submitted for
publication and the work of volunteers. ?Basically, the higher quality the
articles submitted, the higher the quality of the content.
?
Glen, K9STH
AMSAT 239 / LM 463
Website: http://k9sth.com
________________________________
From: Gould Smith <gouldsmi@xxxxxxxxx.xxx>
To: ryan woods <kd8atf@xxxxx.xxx>; Amsat-bb@xxxxx.xxx
Sent: Thursday, October 18, 2012 1:11 PM
Subject: [amsat-bb] Re: Amsat Journal?
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.
------------------------------
Message: 6
Date: Thu, 18 Oct 2012 18:12:50 -0400
From: Gus 8P6SM <8p6sm@xxxx.xxx>
To: "Trevor ." <m5aka@xxxxx.xx.xx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: CAS-2A1 and CAS-2A2 Linear Transponder Amateur
Radio Satellites
Message-ID: <50807EE2.204@xxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
On 10/18/2012 04:45 PM, Trevor . wrote:
> I like the look of these two satellites.
>
> See http://www.uk.amsat.org/?p=11108
Me too! I especially like the idea of the 1260/2400 MHz transponder
with 200 kHz of bandwidth!
--
73, de Gus 8P6SM
The Easternmost Isle
------------------------------
Message: 7
Date: Thu, 18 Oct 2012 18:16:55 -0400
From: "STeve Andre'" <andres@xxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: LEO to HEO
Message-ID: <50807FD7.7020900@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 10/18/12 08:44, 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
>
It absolutely could be done -- with the right amount of money.
I'm not sure that a kick motor would ultimately be cheaper
than a flight designed to get something into HEO, nor as safe.
It's really all about money, several millions of little dollarettes...
--STeve Andre'
wb8wsf en72
------------------------------
Message: 8
Date: Fri, 19 Oct 2012 01:19:17 -0400
From: Gus 8P6SM <8p6sm@xxxx.xxx>
To: "STeve Andre'" <andres@xxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: LEO to HEO
Message-ID: <5080E2D5.8080506@xxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
On 10/18/2012 06:16 PM, STeve Andre' wrote:
> It absolutely could be done -- with the right amount of money.
> I'm not sure that a kick motor would ultimately be cheaper
> than a flight designed to get something into HEO, nor as safe.
I think the problem with traditional kick motors is that they're big and
heavy. Pretty much mandating a Fridge-Sat, not a Rubik-Sat. Other
propulsion systems may be better suited to a small format.
I wonder what would happen if you electrically detonated a large
firearms cartridge in a small satellite. I mean, exactly how much of a
'kick' do you need to get a small satellite up to a reasonable height?
Perhaps this is an experiment some university should conduct.
--
73, de Gus 8P6SM
The Easternmost Isle
------------------------------
Message: 9
Date: Fri, 19 Oct 2012 08:58:32 +0300
From: "Zilvinas, LY2SS" <zilvinas@xxxxx.xx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: LEO to HEO
Message-ID: <5080EC08.9030800@xxxxx.xx>
Content-Type: text/plain; charset=UTF-8; format=flowed
On 2012.10.19 08:19, Gus 8P6SM wrote:
> On 10/18/2012 06:16 PM, STeve Andre' wrote:
>> It absolutely could be done -- with the right amount of money.
>> I'm not sure that a kick motor would ultimately be cheaper
>> than a flight designed to get something into HEO, nor as safe.
> I think the problem with traditional kick motors is that they're big and
> heavy. Pretty much mandating a Fridge-Sat, not a Rubik-Sat. Other
> propulsion systems may be better suited to a small format.
>
> I wonder what would happen if you electrically detonated a large
> firearms cartridge in a small satellite. I mean, exactly how much of a
> 'kick' do you need to get a small satellite up to a reasonable height?
> Perhaps this is an experiment some university should conduct.
>
Here's also interesting concept and figures:
http://nextbigfuture.com/2012/02/electrolysis-propulsion-for-cubesat.html
73! Zilvis LY2SS
------------------------------
Message: 10
Date: Fri, 19 Oct 2012 07:03:32 +0100
From: "Graham Shirville" <g.shirville@xxxxxxxxxx.xxx>
To: "AMSAT BB" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: LEO to HEO
Message-ID: <0F027BA8DCB641A796ED21A07CBFDB77@xxxxxxx.xxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi all,
For those interested in how to get from LEO to HEO - well at least to MEO,
here is a link to some slides produced by David G0MRF back in 2009 that
explains quite a lot about the subject.
http://mstl.atl.calpoly.edu/~bklofas/Presentations/AMSATUK2009/2c_Bowman-MEO.p
df
As it happens I am presently on a very early train going to Glasgow to
deliver the Flight Model hardware for the FUNcube sub-system for integration
into the UKube 3U spacecraft. This is being assembled at Clyde Space Ltd and
is scheduled to be launched in March next year.
The FUNcube subsystem on this spacecraft is intended to provide a linear U/V
transponder for amateur use and telemetry for school students. AMSAT-UK is
delighted to have been given the opportunity to join in this project and is
grateful to those who made this happen, to all their volunteers who have
worked so hard to turn the idea into a reality, and to the many supporters
who have donated towards the costs.
As well as our FUNcube subsystem, there is also a U/V transceiver from ISIS
BV on board and this also has AO16 FMtoDSB functionality as well.
The next couple of weeks should also see us finish the testing and
integration of FUNcube-1 which is another, separate, complete, 1U
spacecraft, and which is presently expected to launch in April.
more news later
73
Graham
G3VZV
------------------------------
Message: 11
Date: Fri, 19 Oct 2012 00:06:39 -0700
From: Kevin Deane <summit496@xxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] FitSat Visual
Message-ID: <COL107-W63481C00B835E09A1834C183750@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Has anyone seen the LED's flashing Morse Code?
Web>>>>http://www.fit.ac.jp/~tanaka/fitsat.shtml
Report>>>>http://www.fit.ac.jp/~tanaka/fitsat.shtml
Not sure my keps are right...
Thanks for any help.
Kevin
KF7MYK
------------------------------
Message: 12
Date: Fri, 19 Oct 2012 20:56:22 +0900
From: <tanaka@xxx.xx.xx>
To: "Kevin Deane" <summit496@xxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: FitSat Visual
Message-ID: <20121019115622.000023C3.0258@xxx.xx.xx>
Content-Type: Text/plain; charset=UTF-8
Dear Kevin,
Thank you very much for your interest in FITSAT-1.
We now start experiments of 5.8GHz transmission.
Flashing LED will be start around November.
73
Takushi
JA6AVG
----- Original Message -----
>
> Has anyone seen the LED's flashing Morse Code?
>
> Web>>>>http://www.fit.ac.jp/~tanaka/fitsat.shtml
>
> Report>>>>http://www.fit.ac.jp/~tanaka/fitsat.shtml
>
> Not sure my keps are right...
>
> Thanks for any help.
>
> Kevin
> KF7MYK
>
>
> _______________________________________________
> 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: 13
Date: Fri, 19 Oct 2012 21:19:56 +0900
From: "Mineo Wakita" <ei7m-wkt@xxxxxxxxx.xx.xx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] FITSAT 5.84GHz received
Message-ID: <C02905E3666F4A5E9557FAF05368AE07@xxxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-2022-jp";
reply-type=original
FITSAT 5.84GHz signal was received by JA0CAW at 17 Oct 2012.
http://www.ne.jp/asahi/hamradio/je9pel/fitsat58.htm
JE9PEL, Mineo Wakita
------------------------------
Message: 14
Date: Fri, 19 Oct 2012 08:36:36 -0400
From: Robert McGwier <rwmcgwier@xxxxx.xxx>
To: amsat bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Job openings working for me
Message-ID:
<CA+K5gzcP4wdH7XcH=o9JM9ANQ5JL_8yP+CnQS1-C8d55WcEVnA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
http://listings.jobs.vt.edu/applicants/Central?quickFind=196236
--
Bob McGwier
Owner and Technical Director, Allied Communication, LLC
Facebook: N4HYBob
ARS: N4HY
------------------------------
Message: 15
Date: Fri, 19 Oct 2012 09:25:08 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: SCR-L@xxxxxxxxxxx.xxx
Cc: TAPR APRS Mailing List <aprssig@xxxx.xxx>, aprs@xxxxxxxxxxx.xxxx
Amsat - BBs <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] APRS for JOTA, Everywhere!
Message-ID: <1a39981f2920c0c8f37b1ec6ab37e4f3@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Use your APRS radio for global contacts at your JOTA station.
You can use your APRS radio or HT to text message a CQ to all other JOTA
stations with an APRS radio anywhere in the world. You need to remember
nothing about the network, or paths, or freqs or do any set up. Just use
the normal APRS frequency.
Just send an APRS message to ANSRVR and make the first two words of the
message be CQ JOTA .
Your message will be delivered instantly to every other JOTA station in
the world * that has also sent a similar ANSRVR message*.
Example: Message to ANSRVR: CQ JOTA fm Four Rivers Dist, MD
This Logs you into the ANSRVR which forwards the message to every other
similar station instantly.
NOTE. This is just a way of calling a global CQ. You should answer any
incoming such message with a direct response to the CALLSIGN of the
sending station, not to ANSRVR. ANSRVR is a group ANOUNCEMENT SERVER that
lets you see the callsigns of everyone else that is playing. After you
see the callsigns, from then on, you use normal one-on-one messages with
that station to complete the contact.
ANSRVR replaces the original CQSRVR because CQSRVR ignores stations using
tactical callsigns and therefor impractical for general use where some
stations may have tactical calls.
See details on http://aprs.org/ansrvr.html
Bob, WB4aPR
------------------------------
Message: 16
Date: Fri, 19 Oct 2012 09:37:59 -0400
From: "Mike Seguin N1JEZ" <n1jez@xxxxxxxxxxxxxxxxx.xxx>
To: "Mineo Wakita" <ei7m-wkt@xxxxxxxxx.xx.xx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: FITSAT 5.84GHz received
Message-ID: <777290D21D37475C85210797EE34509E@xxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
Does FITSAT-1 transmit on 5.84 GHz when over the east coast of the US? If
it does, I'd like to try and hear it. 2' dish and SDR for detection here.
73,
Mike, N1JEZ
AMSAT 29649
"A closed mouth gathers no feet"
----- Original Message -----
From: "Mineo Wakita" <ei7m-wkt@xxxxxxxxx.xx.xx>
To: <amsat-bb@xxxxx.xxx>
Sent: Friday, October 19, 2012 8:19 AM
Subject: [amsat-bb] FITSAT 5.84GHz received
> FITSAT 5.84GHz signal was received by JA0CAW at 17 Oct 2012.
> http://www.ne.jp/asahi/hamradio/je9pel/fitsat58.htm
>
> JE9PEL, Mineo Wakita
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 7, Issue 349
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