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CX2SA > SATDIG 11.10.11 19:01l 1454 Lines 54482 Bytes #999 (0) @ WW
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Today's Topics:
1. Re: Geostationary Satellite (Howie DeFelice)
2. Re: Geostationary Satellite (Joe)
3. Re: Geostationary Satellite (Tom Schaefer, NY4I)
4. 2011 AMSAT Space Symposium Hotel Reservations (Martha)
5. Re: Geostationary Satellite (Andre)
6. Re: Geostationary Satellites (Paul Williamson)
7. Fwd: Satellite Beacon Tracking Request (Mani VU2WMY)
8. Re: SRMSAT Keps and Down Link Details (Lynn W. Deffenbaugh (Mr))
9. Re: Am-Comm Clear Speech Base DSP Filter For Sale (Alan P. Biddle)
10. Re: SRMSAT Keps and Down Link Details (PE0SAT)
----------------------------------------------------------------------
Message: 1
Date: Tue, 11 Oct 2011 10:01:20 -0400
From: Howie DeFelice <howied231@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Geostationary Satellite
Message-ID: <BLU157-W8BBD05E3FBF1101359CCEE7E20@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
I agree with much of what Dan, N8GFV, says. Our best hope of a high altitude
satellite is probably a hosted payload on a GEO sat. To make that viable we
need to consider the entire mission. GEO satellite operators are a
for-profit business and every aspect of a commercial satellite has a dollar
value. The major items are spectrum, power and fuel. Since hams bring their
own spectrum, that is a no cost item for us. If we need to use satellite
power then we would need to pay the market rate for the percentage of the
total satellite resource used for the design lifetime of the satellite,
typically 15 years. If the payload can be disabled by the operator we may be
able to negotiate a pay as you go plan so that we don't have to pre-pay 15
years worth of power. Developing very power efficient transponder systems
will reduce our costs. Trading bandwidth for power by using digital
encoding, strong FEC, regenerative transponders with DSP signal enhancement
will all aid in the reductio!
n of the power required to close a link.
The other big cost factor is fuel. As previously stated here, station
keeping is a critical element in GEO satellites and with the advances of
component technology, a satellites lifetime in orbit is determined primarily
by the amount of station keeping fuel it can carry. The more fuel, the
longer the satellite life, the more time the operator can use to recover
their investment and make money. Every ounce added to the satellite affects
the cost of the launch and possibly the amount of fuel that can be carried
on board. Whether this is the case or not, the added satellite weight WILL
add to the launch cost that we would have to pay.
The good news is that the AMSAT community and the satellite operators have
common interests in making satellites less expensive and more efficient. By
building on the technology pioneered in ARISSAT-1 we MAY be able to get some
cooperation from a commercial operator to deploy a technology demonstration
package as a hosted payload. This might be more probable than one thinks.
Satellite operators are EXTREMELY conservative and don't deploy new
technology until it is thoroughly proven. The commercial satellite market is
running out of real estate. Many of the big operators are at over 80%
capacity. Since they are for-profit organizations, they are running out of
product quickly and will not be able to grow their business. All the major
operators are investing large amounts of money to promote a hosted payload
business where government and scientific users can bring their own bandwidth
to a transponder or payload on the operators platform. A low cost, high
performance, innovativ!
e payload COULD be a great advertising tool for a commercial operator. The
operator would get the payload for zero cost and could also get part of the
launch cost subsidized by AMSAT in return for a real world, open source
demonstration tool.
If we build this payload along the lines of Tom Clark's C-C rider concept
with a 5 GHz up/ 3 GHz. down transponder we can probably even use the
satellites low gain telemetry antenna, further reducing payload costs.
Sorry for the lengthy post but I have been thinking about this for a while
and this seemed like a good opportunity to finally put it in writing.
HowieAB2S
------------------------------
Message: 2
Date: Tue, 11 Oct 2011 09:23:54 -0500
From: Joe <nss@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Geostationary Satellite
Message-ID: <4E94517A.20600@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Too bad we can't get one of the TV sat people to allow us to have one of
their channels. It would be wide enough to hold hundreds of QSO's at
the same time for sure. And I bet they have at least one that isn't
doing anything at all.
But of course thats not a ham band either bummer!
Joe WB9SBD
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 10/11/2011 9:01 AM, Howie DeFelice wrote:
> I agree with much of what Dan, N8GFV, says. Our best hope of a high
altitude satellite is probably a hosted payload on a GEO sat. To make that
viable we need to consider the entire mission. GEO satellite operators are a
for-profit business and every aspect of a commercial satellite has a dollar
value. The major items are spectrum, power and fuel. Since hams bring their
own spectrum, that is a no cost item for us. If we need to use satellite
power then we would need to pay the market rate for the percentage of the
total satellite resource used for the design lifetime of the satellite,
typically 15 years. If the payload can be disabled by the operator we may be
able to negotiate a pay as you go plan so that we don't have to pre-pay 15
years worth of power. Developing very power efficient transponder systems
will reduce our costs. Trading bandwidth for power by using digital
encoding, strong FEC, regenerative transponders with DSP signal enhancement
will all aid in the reduct!
io!
> n of the power required to close a link.
> The other big cost factor is fuel. As previously stated here, station
keeping is a critical element in GEO satellites and with the advances of
component technology, a satellites lifetime in orbit is determined primarily
by the amount of station keeping fuel it can carry. The more fuel, the
longer the satellite life, the more time the operator can use to recover
their investment and make money. Every ounce added to the satellite affects
the cost of the launch and possibly the amount of fuel that can be carried
on board. Whether this is the case or not, the added satellite weight WILL
add to the launch cost that we would have to pay.
> The good news is that the AMSAT community and the satellite operators have
common interests in making satellites less expensive and more efficient. By
building on the technology pioneered in ARISSAT-1 we MAY be able to get some
cooperation from a commercial operator to deploy a technology demonstration
package as a hosted payload. This might be more probable than one thinks.
Satellite operators are EXTREMELY conservative and don't deploy new
technology until it is thoroughly proven. The commercial satellite market is
running out of real estate. Many of the big operators are at over 80%
capacity. Since they are for-profit organizations, they are running out of
product quickly and will not be able to grow their business. All the major
operators are investing large amounts of money to promote a hosted payload
business where government and scientific users can bring their own bandwidth
to a transponder or payload on the operators platform. A low cost, high
performance, innovat!
iv!
> e payload COULD be a great advertising tool for a commercial operator.
The operator would get the payload for zero cost and could also get part of
the launch cost subsidized by AMSAT in return for a real world, open source
demonstration tool.
> If we build this payload along the lines of Tom Clark's C-C rider concept
with a 5 GHz up/ 3 GHz. down transponder we can probably even use the
satellites low gain telemetry antenna, further reducing payload costs.
> Sorry for the lengthy post but I have been thinking about this for a while
and this seemed like a good opportunity to finally put it in writing.
> HowieAB2S
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 3
Date: Tue, 11 Oct 2011 11:07:15 -0400
From: "Tom Schaefer, NY4I" <ny4i@xxxx.xxx>
To: Joe <nss@xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Geostationary Satellite
Message-ID: <91FB4D62-9D2F-49AB-A700-0202060B6C42@xxxx.xxx>
Content-Type: text/plain; charset=us-ascii
I ask this in all seriousness though. Is a giant repeater in the sky with no
need to handle Doppler shift really something that would be used? That would
take some of the magic out of it. Having to follow a schedule and have the
computer and radio synced to correct for the shift is part of the operating
fun. Sure we hear some of the same people but it is the station that pops in
on the low elevation passes that make it special.
This seems like the same idea of explaining to a "hamshack on the belt" type
the magic of HF. Yes, you have to check the propagation and MUF. What is the
best band to talk on. All the things that lead to making contacts with
different places on HF. While it would be nice to push up North American
VUCC numbers, I just don't see why anyone would want a geo-stationary
satellite for ham activities. I can guarantee at least two of my friends are
on the local repeater right now. That is great if I have to get ahold of
them for something or if I am on the side of the road in a ditch (although
the auto club on my cell phone is my preferred mode of choice in that
situation).
Due to the costs, the is clearly academic, but as we frequently hear
rumblings of a GEOSYNC bird (from me too in the past), when I really look at
why I like operating satellites, that type of bird would have none of that.
I am glad someone brought this up though as it caused me to re-examine my
own beliefs about it.
Thanks,
Tom Schaefer, NY4I
ny4i@xxxx.xxx
EL88pb
Monitoring EchoLink node KJ4FEC-L 489389
DSTAR Capable APRS: NY4I-15
On Oct 11, 2011, at 10:23 AM, Joe wrote:
> Too bad we can't get one of the TV sat people to allow us to have one of
their channels. It would be wide enough to hold hundreds of QSO's at the
same time for sure. And I bet they have at least one that isn't doing
anything at all.
>
> But of course thats not a ham band either bummer!
>
> Joe WB9SBD
>
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
>
> On 10/11/2011 9:01 AM, Howie DeFelice wrote:
>> I agree with much of what Dan, N8GFV, says. Our best hope of a high
altitude satellite is probably a hosted payload on a GEO sat. To make that
viable we need to consider the entire mission. GEO satellite operators are a
for-profit business and every aspect of a commercial satellite has a dollar
value. The major items are spectrum, power and fuel. Since hams bring their
own spectrum, that is a no cost item for us. If we need to use satellite
power then we would need to pay the market rate for the percentage of the
total satellite resource used for the design lifetime of the satellite,
typically 15 years. If the payload can be disabled by the operator we may be
able to negotiate a pay as you go plan so that we don't have to pre-pay 15
years worth of power. Developing very power efficient transponder systems
will reduce our costs. Trading bandwidth for power by using digital
encoding, strong FEC, regenerative transponders with DSP signal enhancement
will all aid in the reduc!
t!
> io!
>> n of the power required to close a link.
>> The other big cost factor is fuel. As previously stated here, station
keeping is a critical element in GEO satellites and with the advances of
component technology, a satellites lifetime in orbit is determined primarily
by the amount of station keeping fuel it can carry. The more fuel, the
longer the satellite life, the more time the operator can use to recover
their investment and make money. Every ounce added to the satellite affects
the cost of the launch and possibly the amount of fuel that can be carried
on board. Whether this is the case or not, the added satellite weight WILL
add to the launch cost that we would have to pay.
>> The good news is that the AMSAT community and the satellite operators
have common interests in making satellites less expensive and more
efficient. By building on the technology pioneered in ARISSAT-1 we MAY be
able to get some cooperation from a commercial operator to deploy a
technology demonstration package as a hosted payload. This might be more
probable than one thinks. Satellite operators are EXTREMELY conservative and
don't deploy new technology until it is thoroughly proven. The commercial
satellite market is running out of real estate. Many of the big operators
are at over 80% capacity. Since they are for-profit organizations, they are
running out of product quickly and will not be able to grow their business.
All the major operators are investing large amounts of money to promote a
hosted payload business where government and scientific users can bring
their own bandwidth to a transponder or payload on the operators platform. A
low cost, high performance, innova!
t!
> iv!
>> e payload COULD be a great advertising tool for a commercial operator.
The operator would get the payload for zero cost and could also get part of
the launch cost subsidized by AMSAT in return for a real world, open source
demonstration tool.
>> If we build this payload along the lines of Tom Clark's C-C rider concept
with a 5 GHz up/ 3 GHz. down transponder we can probably even use the
satellites low gain telemetry antenna, further reducing payload costs.
>> Sorry for the lengthy post bthinking about this for a
while and this seemed like a good opportunity to finally put it in writing.
>> HowieAB2S
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 4
Date: Tue, 11 Oct 2011 11:14:23 -0400
From: Martha <martha@xxxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] 2011 AMSAT Space Symposium Hotel Reservations
Message-ID:
<CAPk0USy2A8swQCgAMuEGFk0=zkodFZ3As6OQJBH6J6RVLr-hNQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
People - I have contacted the Wyndham hotel in San Jose CA and they have
agreed to move the cutoff date for room reservations to *October 24th*. The
phone number is 408-453-6200 and the reservation block code is AMSAT. The
Symposium is November 4th - 6th with an optional tour on Sunday. For more
information, go to the AMSAT website. Don't forget to register for the
meeting and the banquet at the AMSAT store found on the website.
--
73- Martha
------------------------------
Message: 5
Date: Tue, 11 Oct 2011 17:25:48 +0200
From: Andre <sats@xxxxxx.xxxxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Geostationary Satellite
Message-ID: <4E945FFC.20900@xxxxxx.xxxxx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Op 11-10-2011 16:23, Joe schreef:
> Too bad we can't get one of the TV sat people to allow us to have one
> of their channels. It would be wide enough to hold hundreds of QSO's
> at the same time for sure. And I bet they have at least one that
> isn't doing anything at all.
>
> But of course thats not a ham band either bummer!
>
> Joe WB9SBD
>
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
That has been done in the 90's upto december 2001, the dutch ATV relay
PI6ALK had a digital stream on Astra 1 satelite using a demonstation
transponder.
In the end it was not the transponder that caused the end of this
experiment but the cost of running the uplink station.
73 Andre PE1RDW
------------------------------
Message: 6
Date: Tue, 11 Oct 2011 09:05:15 -0700
From: Paul Williamson <kb5mu@xxxxx.xxx>
To: Ken Ernandes <n2wwd@xxxxxxxxxx.xxx>
Cc: AMSAT-BB <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] Re: Geostationary Satellites
Message-ID: <4B37F31D-5CCF-468E-8295-88FB12EF146F@xxxxx.xxx>
Content-Type: text/plain;her side. Now I
realize that just measuring distances doesn't capture the whole story, and
that orbital dynamics can be non-intuitive, but it boggles the mind that
objects spaced that far apart can't be kept from colliding without
extraordinary measures.
I would say that I'd like to see the analysis to back up the worry, but I
doubt I'd understand it. You would, though, so I can only ask whether you
have seen the actual analysis and found it compelling.
Is there no clever trick of orbit design that can be used to avoid
collision? We can afford bigger position errors than the commercial guys
can, because we have smaller ground station antennas and no problem with
interference crowding. We can even tolerate some long-term motion, since we
can certainly accept an occasional adjustment to each ground station.
Perhaps these extra freedoms would make it possible to design an orbit
that's close enough to geosynchronous for our purposes, but far enough from
the commercial orbits to be safe?
73 -Paul
kb5mu@xxxxx.xxx
------------------------------
Message: 7
Date: Tue, 11 Oct 2011 21:35:47 +0530
From: Mani VU2WMY <wmy@xxxx.xxx.xx>
To: "BB, AMSAT" <amsat-bb@xxxxx.xxx>, AMSAT-INDIA
<amsatindia@xxxxxxxxxxx.xxx>, VUHAMS <vuhams@xxxxxxxxxxx.xxx>, CQ_VU
<CQ_VU@xxxxxxxxxxx.xxx>
Subject: [amsat-bb] Fwd: Satellite Beacon Tracking Request
Message-ID: <201110111606.p9BG65hh086783@xxxxx.xxx>
Content-Type: t
From: Shantanu <shantag@xxxx.xx.xx>
Subject: Satellite Beacon Tracking Request
To: wmy@xxxx.xxx.xx
Dear Sir,
We will be thankful if you can track our satellite beacon after launch.
You are requested to kindly post our satellite details on various HAM
groups to track our satellite beacon after launch.
Our satellite beacon is at 437.275 MHz, OOK.
Thanks.
Shantanu Agarwal
----- End forwarded message -----
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------------------------------
Message: 8
Date: Tue, 11 Oct 2011 07:56:55 -0400
From: "Lynn W. Deffenbaugh (Mr)" <ldeffenb@xxxxxxxx.xx>
To: Dinesh Cyanam <dinesh@xxxxxx.xxx>, "<amsat-bb@xxxxx.xxx>"
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: SRMSAT Keps and Down Link Details
Message-ID: <4E942F07.5010802@xxxxxxxx.xx>
Content-Type: text/plain; charset=windows-1252; format=flowed
I put the TLE from below into a satellite tracking program and the
anticipated track over the past 12 hours or so can be viewed at
http://tinyurl.com/66ddu6d
Of course, the satellite isn't on orbit yet, but I thought a preview of
the TLE-predicted track might prove interesting.
Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
PS. Here's the image itself, just in case it makes it through
amsat.org's remailer.
On 10/10/2011 1:43 PM, Dinesh Cyanam wrote:
> SRMSAT, A cubesat developed by the students of SRM University, India will
be launched on October 12th, 2011 along with the Megha Tropique satellite on
the PSLV-C18 launch vehicle from ISRO's spaceport in Sriharikota, India.
>
> Payload Details:
> SRMSAT will monitor the green house gases in near infrared region (900nm -
1700nm).
>
> Launch Date and Time:
> October 12, 2011
> 0530 hrs UTC
>
> Telemetry down link and CW beacon on the same frequency: 437.425 MHz (10
dbm)
> (Telemetry decoding info will be posted soon)
>
> Preliminary TLEs from ISTRAC (ISRO Telemetry, Tracking and Command Network):
> SRM
> 1 99999U 11072A 11278.34967500 .00001077 00000-0 60876-3 0 1233
> 2 99999 20.0603 97.4017 0010015 338.6461 208.4324 14.09199968 14
>
> Website: http://srmsat.in
>
> All Radio Amateurs are requested to track SRMSAT and provide us with the
reception reports via AMSAT-BB mailing list or via email to KC2YQJ<at>
arrl.net
>
> 73
> KC2YQJ
> Dinesh Cyanam
>
>
> Quoting, amsat-bb-request@xxxxx.xxxx
>
>> SB SAT @ AMSAT $ANS-282.06
>> India CubeSats For Launch on October 12
>>
>> AMSAT News Service Bulletin 282.06
>> From AMSAT HQ SILVER SPRING, MD.
>> October 9, 2011
>> To All RADIO AMATEURS
>> BID: $ANS-282.06
>>
>> India CubeSats For Launch on October 12
>>
>> Two university cubesats JUGNU and SRMSAT are ready for launch from
>> ISRO's spaceport, Sriharikota, India on October 12.
>>
>> JUGNU was developed by a team of students and faculty at IIT Kanpur
>> and ISRO scientists to launch India's first Nano Satellite. The
>> satellite's mission includes:
>>
>> 1. Micro Imaging System
>> 2. GPS receiver for locating the position of satellite in the orbit
>> 3. MEMS based IMU (Inertial Measurement Unit)
>>
>> Jugnu Frequencies:
>> CW Beacon - 437.275 (17dbm)
>> Pay load - 437.505
>>
>> At press time no further information was available for SRMSAT other
>> than its payload down link and CW Beacon will transmit on 437.425 MHz
>> (10dbm)
>>
>> [ANS thanks Dinesh Cyanam, KC2YQJ; Sanjay Srikanth Nekkanti, AB3OE
>> and Mani, VU2WMY for the above information]
>>
>> /EX
>>
>> SB SAT @ AMSAT $ANS-282.07
>> ARISS Status - 3 October 2011
>>
>> AMSAT News Service Bulletin 282.07
>> From AMSAT HQ SILVER SPRING, MD.
>> October 9, 2011
>> To All RADIO AMATEURS
>> BID: $ANS-282.07
>>
>>
>> 1. School Contacts
>>
>> S. K. Sri Hartamas, Kuala Lumpur, Malaysia scheduled for an Amateur
>> Radio on
>> the International Space Station (ARISS) contact on Monday, October 3 at
>> 14:46
>> UTC. Was successful. The school has been invited by the National Space
>> Agency
>> Satellite Ground Station (call sign 9M2RPN) to participate in the ?Prime
>> Minister?s
>> National Space Challenge Trophy 2011,? which has been an annual event
>> since
>> 2007, when Malaysian space participant, Dr. Sheikh Muszaphar Shukor,
>> flew to
>> the ISS. The National Space Challenge involves a large number of
>> students and
>> encourages them to learn about space. The event receives extensive media
>> coverage from newspapers, radio and television.
>>
>> George Observatory, Needville, Texas scheduled for an Amateur Radio on
>> the
>> International Space Station (ARISS) contact on Saturday, October 8 at
>> 16:50 UTC
>> via telebridge station WH6PN in Hawaii has been completed. Astronomy
>> Day is
>> put on each year by all the Astronomy clubs in the greater Houston area
>> in
>> conjunction with the Houston Museum of Natural Science. The event is
>> held at
>> the George Observatory in Brazos Bend State Park and draws 4000
>> attendees
>> each year. The ARRL (American Radio Relay League) education and
>> technology
>> program will be used to prepare youth for the contact. A NASA booth
>> will be
>> set up and amateur astronomers and amateur radio operators will be
>> available
>e
>> contact audio and also provided a link to audio on its Web site. http://
>> ia700705.us.archive.org/33/items/Expedition29/09-22-11_EXP29_HAM-
>> Radio-Pass.mp3
>>
>> 4. Premier of Nunavut, Canada Promotes ARISS
>>
>> Eva Aariak, the Premier of the Territory of Nunavut, Canada, and
>> Minister
>> of Education, gave a talk about the importance of education, especially
>> in the fields of Science, Technology, Engineering and Mathematics (STEM)
>>
>> and how the Amateur Radio on the International Space Station (ARISS)
>> program makes learning interesting. See: http://www.youtube.com/
>> watch?v=0jSroPPcXtM
>>
>> 5. Astronaut Training Status
>>
>> ESA Astronaut Samantha Cristoforetti has been assigned callsign IZ0UDF.
>> Cristoforetti was selected as an ESA astronaut in May 2009.
>>
>> 6. ARRL QST on ARISS
>>
>> The American Radio Relay League (ARRL) October QST had several items
>> related to ARISS, as follows:
>>
>> The "In Brief" column made mention of the deployment of ARISSat-1 from
>> the ISS on August 3.
>>
>> Then the "Happenings" column carried a 3/4-page article covering the
>> deployment in depth -- the article was titled, "Cosmonauts Deploy
>> ARISSat-1 from ISS".
>>
>> The "Media Hits" column featured the many hits that the ARISSat team g
>> ot, including national-level PR such as the UPI, International Business
>> Times, EETimes, NASA.gov, and Space.
>>
>> The same column also made mention of an article in the Press&
>> Sun-Bulletin
>> of Vestal, NY that highlighted Kopernik Observatory's summer science
>> Pegasus
>> program for kids. (Kopernik sponsored the Windsor Central District
>> schools'
>> ARISS contact.) The article talked about Kopernik hams who helped kids
>> make contact with ham satellites using the observatory's ham station.
>>
>> 7. ARRL Articles on ARISSat
>>
>> The American Radio Relay League (ARRL) posted two articles on ARISSat in
>> its
>> September 29 issue of the ARRL Letter. The first piece covers the survey
>> about
>> ARISSat operations. The second item is about the Chicken Little Contest
>> which
>> is being held to guess when ARISSat-1 will re-enter Earth?s atmosphere.
>> Those
>> who wish to participate may enter one of three categories: students in
>> grades
>> K-8, students in grades 9-12 and adults. Submissions will be accepted
>> until
>> October 15, 2011 at 23:59:00 (UTC).
>> See: http://www.arrl.org/arrlletter?issue=2011-09-29
>>
>> 8. AMSAT Italia Presents Plaques to Expedition 26/27 Crew Members
>>
>> During the post-flight tour of the MagISStra mission, AMSAT Italia
>> presented
>> plaques to ESA astronaut Paolo Nespoli and NASA astronaut Cady Coleman.
>> The inscriptions read:
>>
>> "in appreciation for the dedication so generously given by Catherine G.
>> Coleman, KC5ZTH to scientific education and science dissemination"
>> ESRIN - Frascati, 22 September 2011?
>>
>> "in apprezzamento dell'impegno profuso dal Socio d'Onore Paolo Nespoli,
>> IZ?JPA a sostegno dell'educazione e della divulgazione scientifica"
>> ESRIN -
>> Frascati, 22 Settembre 2011?
>>
>> For photos, see:
>> http://www.flickr.com/photos/63976489@xxxxxxxxxxxxxxxxxxxxxxxxxxx
>>
>> 9. EE Times - ARISSat Blog
>>
>> New entries have been made to the EE (Electronic Engineering) Times
>> ?Chips in Space? blog about amateur radio satellite ARISSat-1. The
>> second
>> part of ?Lessons Learned? may be found at this link:
>> http://www.eetimes.com/
>> electronics-blogs/chips-in-space/4228027/Chips-in-Space--Lessons-
>> learned--Part-2-
>>
>> Current results from the survey held about ARISSat-1 operations may be
>> viewed here (the survey remains open):
>> http://www.eetimes.com/electronics-blogs/other/4228654/Chips-in-Space--
>> Survey-Says-
>>
>> 10. Amateur Radio Newsline on ARISS
>>
>> The Amateur Radio Newsline Report 1781, posted on September 30, included
>>
>> a story on Jamboree on the Air (JOTA) 2011 which will be held over the
>> October 15 ? 16 weekend. The item mentions that ISS Astronaut Mike
>> Fossum,
>> KF5AQG is a scoutmaster and may be on the air over the weekend, if time
>> allows. ?Ham Radio and Scouting: JOTA 2011 - October 15 ? 16,? may be
>> viewed at:
>> ftp://ftp.arnewsline.org/quincy/News/news.txt
>>
>> [ANS thanks Carol, KB3LKI, for the above information]
>>
>> /EX
>>
>>
>> In addition to regular membership, AMSAT offers membership in the
>> President's
>> Club. Members of the President's Club, as sustaining donors to AMSAT
>> Project
>> Funds, will be eligible to receive additional benefits. Application
>> forms are
>> available from the AMSAT Office.
>> Sign up for the Symposium and get your reservations in ASAP to take
>> advantage
>> Of the early discounts offered.
>>
>> 73,
>> This week's ANS Editor,
>> Dee Interdonato, NB2F
>> Nb2f at amsat dot org
>>
>>
>>
>>
>>
>>
>> ------------------------------
>>
>> Message: 8
>> Date: Sun, 09 Oct 2011 11:39:04 -0400
>> From: "Mark L. Hammond"<marklhammond@xxxxx.xxx>
>> To: pe0sat@xxxxx.xxx amsat-bb@xxxxx.xxx
>> Subject: [amsat-bb] Re: ARISSat-1 over Europe
>> Message-ID:<iff51h0054ltuWb05ff5HB@xxxxx.xxx>
>> Content-Type: text/plain; charset="us-ascii"
>>
>> Hello Jan,
>>
>> Yes, the battery is dead. There are no transmissions when the satellite
is in eclipse. Also, after ARISSat-1 re-enters sunlight, there is a 15
minute delay from a built in timer before transmissions begin.
>>
>> Here in the US, we don't currently have any useable windows! It's either
in eclipse, or too close to it for the transmitter to come on overhead.
>>
>> The orbit will precess in the next couple of weeks and we'll again have
some useable time.
>>
>> 73,
>>
>> Mark N8MH
>>
>> At tings: http://amsat.org/mailman/listinfo/amsat-bb
>>
>>
>> ------------------------------
>>
>> Message: 9
>> Date: Sun, 9 Oct 2011 09:22:43 -0400
>> From: Zac Manchester<fleet@xxxxxxx.xxx>
>> To: amsat-bb@xxxxx.xxx
>> Subject: [amsat-bb] KickSat - a personal spacecraft of your own in
>> space
>> Message-ID:
>> <CAKkXDTVprkw8mr1fdfVQORAVzjvymMdpdEthpTNECKPYDVf5Ag@xxxx.xxxxx.xxx>
>> Content-Type: text/plain; charset=ISO-8859-1
>>
>> Hello,
>>
>> I'm launching a project in my spare time that some AMSAT members might
>> be interested in. I'm a graduate student in Aerospace Engineering at
>> Cornell, and I've been working on a ChipSat/Femtosatellite called
>> Sprite for the last several years. I want to launch a CubeSat full of
>> Sprites into low Earth orbit to demonstrate their viability in space.
>> I'm raising money to build the hardware via the Kickstarter website
>> (kicksat.org). Donors who sponsor a sprite will get to name it and
>> specify the text that it will transmit. A group or club can also
>> sponsor a fleet of Sprites together.
>>
>> I'm doing this to try to get more people involved in spaceflight. I
>> want to make it easy enough and cheap enough so that anyone can take
>> part.
>>
>> Please check out my page on Kickstarter for more information - kicksat.org
>>
>> Thanks,
>> Zac Manchester
>>
>>
>> ------------------------------
>>
>> Message: 10
>> Date: Sun, 09 Oct 20und motor windings on these rotators just to
>>> say it could be done, but it takes some work (not recommended).
>>>
>>> I have never seen one of these motors with an open winding. The
>>> failure mode on the 8 that I have repaired were always enamel
>>> insulation breakdown as a result of overheating.
>>>
>>>
>>> Tim - N8DEU
>>>
>>>
>>> Sent from my HTC Tilt? 2, a Windows? Mobile phone
>>>
>>> -----Original Message----- From: Clive Wallis<amsat-bb@xxxxx.xx.xx>
>>> Sent: Friday, October 07, 2011 11:35 AM To:
>>> amsat<amsat-bb@xxxxx.xxx> Subject: [amsat-bb] G5500 Elevation Rotator
>>> Short Circuit?
>>>
>>> I wonder if this is a known fault. Recently the fuse on my G5500
>>> blew. The problem seems to be a short on one of the motor
>>> circuits.
>>>
>>> Checking the DC resistance at the control end, the resistance of one
>>> winding is 1.2 ohms, whereas all the other windings are 4.6 ohms.
>>>
>>> I could understand a motor burning out and going open circuit, but
>>> a short circuit seems less likely. I'm wondering if it could be a
>>> short on the cable at the rotator end, where it is subject to much
>>> bending. There's about 15 metres of cable.
>>>
>>> Any thoughts would be much appreciated. Unfortunately, at the
>>> present time I'm not able to inspect the rotator. It's stuck in the
>>> horizontal position, so I will still be able to use the antenna for
>>> low elevation passes.
>>>
>>> 73 Clive G3CWV
>>>
>>> Hitchin, North Hertfordshire, UK
>>> _______________________________________________ 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: 11
>> Date: Sun, 09 Oct 2011 10:38:41 -0700
>> From: Bill Ress<bill@xxxxxxxxxxx.xxx>
>> To: amsat-bb@xxxxx.xxx
>> Subject: [amsat-bb] Re: KickSat - a personal spacecraft of your own in
>> space
>> Message-ID:<4E91DC21.70205@xxxxxxxxxxx.xxx>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>> Interesting idea Zac, but I have a few questions.
>>
>> Will each Sprite have it's own frequency?
>>
>> Since these Sprites are operating in the Amateur satellite bands, how
>> will you license them?
>>
>> How will you handle the frequency coordination of these transmitters?
>>
>> Regards...Bill - N6GHz
>>
>>
>>
>> On 10/9/2011 6:22 AM, Zac Manchester wrote:
>>> Hello,
>>>
>>> I'm launching a to try to get more people involved in spaceflight. I
>>> want to make it easy enough and cheap enough so that anyone can take
>>> part.
>>>
>>> Please check out my page on Kickstarter for more information - kicksat.org
>>>
>>> Thanks,
>>> Zac Manchester
>>> _______________________________________________
>>> 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 6, Issue 558
>> ****************************************
>
> _______________________________________________
> 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, 11 Oct 2011 11:46:29 -0500
From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
To: "'AMSAT-BB'" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Am-Comm Clear Speech Base DSP Filter For Sale
Message-ID: <1D1394C3B02E460E8C9ED588C4D7EFF5@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
The unit has been taken. Thanks to those who inquired.
73s,
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Alan P. Biddle
Sent: Monday, October 10, 2011 3:33 PM
To: AMSAT-BB
Subject: [amsat-bb] Am-Comm Clear Speech Base DSP Filter For Sale
I am doing some shack cleaning.
This unit was originally sold by Am-Comm. Since then, the basic electronics
have been repackaged, sometimes combined with a speaker, and sold by various
companies. My experience is that most of the time it is amazing, though
rarely it does very little. The exact improvement depends on the signal,
type of noise, levels, etc. It made the difference on AO-40 around apogee.
http://www.eham.net/reviews/detail/1041
Currently West Mountain Radio is selling a similar unit, with an adjustable
threshold added:
http://www.westmountainradio.com/product_info.php?products_id=clr_dsp
The unit is perfect mechanically and electrically. $80 including shipping
in North America.
Please contact me off list.
Alan
WA4SCA
_______________________________________________
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: 10
Date: Tue, 11 Oct 2011 18:48:55 +0200
From: "PE0SAT" <pe0sat@xxxxx.xx>
To: "Lynn W. Deffenbaugh (Mr)" <ldeffenb@xxxxxxxx.xx>
Cc: amsat-bb@xxxxx.xxxx Dinesh Cyanam <dinesh@xxxxxx.xxx>
Subject: [amsat-bb] Re: SRMSAT Keps and Down Link Details
Message-ID: <20111011164855.8E44C1A30F@xx.xxxxx.xx>
Content-Type: text/plain;charset=iso-8859-1
I did the same and indeed interesting .......... :S
http://www.pe0sat.vgnet.nl/2011/unable-to-receive-srmsat/
73 Jan PE0SAT
--
With regards PE0SAT
Internet web-page http://www.pe0sat.vgnet.nl/
On Tue, October 11, 2011 13:56, Lynn W. Deffenbaugh (Mr) wrote:
> I put the TLE from below into a satellite tracking program and the
> anticipated track over the past 12 hours or so can be viewed at
>
> http://tinyurl.com/66ddu6d
>
> Of course, the satellite isn't on orbit yet, but I thought a preview of
> the TLE-predicted track might prove interesting.
>
> Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32
>
> PS. Here's the image itself, just in case it makes it through
> amsat.org's remailer.
>
>
>
> On 10/10/2011 1:43 PM, Dinesh Cyanam wrote:
>> SRMSAT, A cubesat developed by the students of SRM University, India
>> will be launched on October 12th, 2011 along with the Megha Tropique
>> satellite on the PSLV-C18 launch vehicle from Im ISTRAC (ISRO Telemetry, Tracking and Command
>> Network):
>> SRM
>> 1 99999U 11072A 11278.34967500 .00001077 00000-0 60876-3 0 1233
>> 2 99999 20.0603 97.4017 0010015 338.6461 208.4324 14.09199968 14
>>
>> Website: http://srmsat.in
>>
>> All Radio Amateurs are requested to track SRMSAT and provide us with the
>> reception reports via AMSAT-BB mailing list or via email to KC2YQJ<at>
>> arrl.net
>>
>> 73
>> KC2YQJ
>> Dinesh Cyanam
>>
>>
>> Quoting, amsat-bb-request@xxxxx.xxxx
>>
>>> SB SAT @ AMSAT $ANS-282.06
>>> India CubeSats For Launch on October 12
>>>
>>> AMSAT News Service Bulletin 282.06
>>> From AMSAT HQ SILVER SPRING, MD.
>>> October 9, 2011
>>> To All RADIO AMATEURS
>>> BID: $ANS-282.06
>>>
>>> India CubeSats For Launch on October 12
>>>
>>> Two university cubesats JUGNU and SRMSAT are ready for launch from
>>> ISRO's spaceport, Sriharikota, India on October 12.
>>>
>>> JUGNU was developed by a team of students and faculty at IIT Kanpur
>>> and ISRO scientists to launch India's first Nano Satellite. The
>>> satellite's mission includes:
>>>
>>> 1. Micro Imaging System
>>> 2. GPS receiver for locating the position of satellite in the orbit
>>> 3. MEMS based IMU (Inertial Measurement Unit)
>>>
>>> Jugnu Frequencies:
>>> CW Beacon - 437.275 (17dbm)
>>> Pay load - 437.505
>>>
>>> At press time no further information was available for SRMSAT other
>>> than its payload down link and CW Beacon will transmit on 437.425 MHz
>>> (10dbm)
>>>
>>> [ANS thanks Dinesh Cyanam, KC2YQJ; Sanjay Srikanth Nekkanti, AB3OE
>>> and Mani, VU2WMY for the above information]
>>>
>>> /EX
>>>
>>> SB SAT @ AMSAT $ANS-282.07
>>> ARISS Status - 3 October 2011
>>>
>>> AMSAT News Service Bulletin 282.07
>>> From AMSAT HQ SILVER SPRING, MD.
>>> October 9, 2011
>>> To All RADIO AMATEURS
>>> BID: $ANS-282.07
>>>
>>>
>>> 1. School Contacts
>>>
>>> S. K. Sri Hartamas, Kuala Lumpur, Malaysia scheduled for an Amateur
>>> Radio on
>>> the International Space Station (ARISS) contact on Monday, October 3 at
>>> 14:46
>>> UTC. Was successful. The school has been invited by the National Space
>>> Agency
>>> Satellite Ground Station (call sign 9M2RPN) to participate in the
>>> ?Prime
>>> Minister?s
>>> National Space Challenge Trophy 2011,? which has been an annual event
>>> since
>>> 2007, when Malaysian space participant, Dr. Sheikh Muszaphar Shukor,
>>> flew to
>>> the ISS. The National Space Challenge involves a large number of
>>> students and
>>> encourages them to learn about space. The event receives extensive
>>> media
>>> coverage from newspapers, radio and television.
>>>
>>> George Observatory, Needville, Texas scheduled for an Amateur Radio on
>>> the
>>> International Space Station (ARISS) contact on Saturday, October 8 at
>>> 16:50 UTC
>>> via telebridge station WH6PN in Hawaii hase youth for the contact. A NASA booth
>>> will be
>>> set up and amateur astronomers and amateur radio operators will be
>>> available
>>> to discuss the ISS, space travel and forms of communication.
>>>
>>> 2. Lompoc High School Students Experience ARISS Contact
>>>
>>> On Thursday, September 29, students attending Lompoc High School in
>>> Lompoc,
>>> California connected with on-orbit astronaut Mike Fossum, KF5AQG via an
>>> Amateur Radio on the International Space Station (ARISS) contact.
>>> Fossum
>>> fielded
>>> over ten questions before the ISS went over the horizon. Students who
>>> participated
>>> in the contact are involved in Lompoc's STaRS (Space, Technology and
>>> Robotics
>>> Systems) Academy. The event highlighted students? studies covering
>>> space
>>> flight, the space environment, orbital motion, ground tracking, life
>>> support
>>> systems and rockets. The Santa Maria Times posted an article about the
>>> experience:
>>> http://santamariatimes.com/news/local/education/talking-to-an-
>>> astronaut-in-space/article_b85f7212-eb40-11e0-a23f-001cc4c002e0.html
>>>
>>> 3. NASA Shares Kiroli Contact Audio
>>>
>>> Kiroli Elementary School students from West Monroe, Louisiana took part
>>> in an ARISS contact with Satoshi Furukawa, KE5DAW on the International
>>> Space Station on September 22. This was the first ARISS contact for
>>> Louisianans. On Wednesday, September 28, NASA tweeted a link to the
>>> contact audio and also provided a link to audio on its Web site.
>>> http://
>>> ia700705.us.archive.org/33/items/Expedition29/09-22-11_EXP29_HAM-
>>> Radio-Pass.mp3
>>>
>>> 4. Premier of Nunavut, Canada Promotes ARISS
>>>
>>> Eva Aariak, the Premier of the Territory of Nunavut, Canada, and
>>> Minister
>>> of Education, gave a talk about the importance of education, especially
>>> in the fields of Science, Technology, Engineering and Mathematics
>>> (STEM)
>>>
>>> and how the Amateur Radio on the International Space Station (ARISS)
>>> program makes learning interesting. See: http://www.youtube.com/
>>> watch?v=0jSroPPcXtM
>>>
>>> 5. Astronaut Training Status
>>>
>>> ESA Astronaut Samantha Cristoforetti has been assigned callsign IZ0UDF.
>>> Cristoforetti was selected as an ESA astronaut in May 2009.
>>>
>>> 6. ARRL QST on ARISS
>>>
>>> The American Radio Relay League (ARRL) October QST had several items
>>> related to ARISS, as follows:
>>>
>>> The "In Brief" column made mention of the deployment of ARISSat-1 from
>>> the ISS on August 3.
>>>
>>> Then the "Happenings" column carried a 3/4-page article covering the
>>> deployment in depth -- the article was titled, "Cosmonauts Deploy
>>> ARISSat-1 from ISS".
>>>
>>> The "Media Hits" column featured the many hits that the ARISSat team g
>>> ot, including national-level PR such as the UPI, International Business
>>> Times, EETimes, NASA.gov, and Space.
>>>
>>> The same column also made mention of an article in the Press&
>>> Sun-Bulletin
>>> of Vestal, NY that highlighted Kopernik Observatory's summer science
>>> Pegasus
>>> program for kids. (Kopernik sponsored the Windsor Central District
>>> schools'
>>> ARISS contact.) The article talked about Kopernik hams who helped kids
>>> make contact with ham satellites using the observatory's ham station.
>>>
>>> 7. ARRL Articles on ARISSat
>>>
>>> The American Radio Relay League (ARRL) posted two articles on ARISSat
>>> in
>>> its
>>> September 29 issue of the ARRL Letter. The first piece covers the
>>> survey
>>> about
>>> ARISSat operations. The second item is about the Chicken Little Contest
>>> which
>>> is being held to guess when ARISSat-1 will re-enter Earth?s atmosphere.
>>> Those
>>> who wish to participate may enter one of three categories: students in
>>> grades
>>> K-8, students in grades 9-12 and adults. Submissions will be accepted
>>> until
>>> October 15, 2011 at 23:59:00 (UTC).
>>> See: http://www.arrl.org/arrlletter?issue=2011-09-29
>>>
>>> 8. AMSAT Italia Presents Plaques to Expedition 26/27 Crew Members
>>>
>>> During the post-flight tour of the MagISStra mission, AMSAT Italia
>>> presented
>>> plaques to ESA astronaut Paolo Nespoli and NASA astronaut Cady Coleman.
>>> The inscriptions read:
>>>
>>> "in appreciation for the dedication so geateur radio satellite ARISSat-1. The
>>> second
>>> part of ?Lessons Learned? may be found at this link:
>>> http://www.eetimes.com/
>>> electronics-blogs/chips-in-space/4228027/Chips-in-Space--Lessons-
>>> learned--Part-2-
>>>
>>> Current results from the survey held about ARISSat-1 operations may be
>>> viewed here (the survey remains open):
>>> http://www.eetimes.com/electronics-blogs/other/4228654/Chips-in-Space--
>>> Survey-Says-
>>>
>>> 10. Amateur Radio Newsline on ARISS
>>>
>>> The Amateur Radio Newsline Report 1781, posted on September 30,
>>> included
>>>
>>> a story on Jamboree on the Air (JOTA) 2011 which will be held over the
>>> October 15 ? 16 weekend. The item mentions that ISS Astronaut Mike
>>> Fossum,
>>> KF5AQG is a scoutmaster and may be on the air over the weekend, if time
>>> allows. ?Ham Radio and Scouting: JOTA 2011 - October 15 ? 16,? may be
>>> viewed at:
>>> ftp://ftp.arnewsline.org/quincy/News/news.txt
>>>
>>> [ANS thanks Carol, KB3LKI, for the above information]
>>>
>>> /EX
>>>
>>>
>>> In addition to regular membership, AMSAT offers membership in the
>>> President's
>>> Club. Members of the President's Club, as sustaining donors to AMSAT
>>> Project
>>> Funds, will be eligible to receive additional benefits. Application
>>> forms are
>>> available from the AMSAT Office.
>>> Sign up for the Symposium and get your reservations in ASAP to take
>>> advantage
>>> Of the early discounts offered.
>>>
>>> 73,
>>> This week's ANS Editor,
>>> Dee Interdonato, NB2F
>>> Nb2f at amsat dot org
>>>
>>>
>>>
>>>
>>>
>>>
>>> ------------------------------
>>>
>>> Message: 8
>>> Date: Sun, 09 Oct 2011 11:39:04 -0400
>>> From: "Mark L. Hammond"<marklhammond@xxxxx.xxx>
>>> To: pe0sat@xxxxx.xxx amsat-bb@xxxxx.xxx
>>> Subject: [amsat-bb] Re: ARISSat-1 over Europe
>>> Message-ID:<iff51h0054ltuWb05ff5HB@xxxxx.xxx>
>>> Content-Type: text/plain; charset="us-ascii"
>>>
>>> Hello Jan,
>>>
>>> Yes, the battery is dead. There are no transmissions when the
>>> satellite is in eclipse. Also, after ARISSat-1 re-enters sunlight,
>>> there is a 15 minute delay from a built in timer before transmissions
>>> begin.
>>>
>>> Here in the US, we don't currently have any useable windows! It's
>>> either in eclipse, or too close to it for the transmitter to come on
>>> overhead.
>>>
>>> The orbit will precess in the next couple of weeks and we'll again have
>>> some useable time.
>>>
>>> 73,
>>>
>>> Mark N8MH
>>>
>>> At 04:22 PM 10/9/2011 +0200, PE0SAT wrote:
>>>
>>>
>>>
>>>> Are there stations in Europe that receive ARISSat-1 telemetry or other
>>>> data? I tryed last week and yesterday evening but nothing was
>>>> received.
>>>>
>>>> Are the batteries completly drained and therefor no activity when the
>>>> Sat is in the dark :-)
>>>>
>>>>
>>>> 73 Jan PE0SAT
>>>>
>>>> _______________________________________________
>>>> 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: Sun, 9 Oct 2011 09:22:43 -0400
>>> From: Zac Manchester<fleet@xxxxxxx.xxx>
>>> To: amsat-bb@xxxxx.xxx
>>> Subject: [amsat-bb] KickSat - a personal spacecraft of your own in
>>> space
>>> Message-ID:
>>> <CAKkXDTVprkw8mr1fdfVQORAVzjvymMdpdEthpTNECKPYDVf5Ag@xxxx.xxxxx.xxx>
>>> Content-Type: text/plain; charset=ISO-8859-1
>>>
>>> Hello,
>>>
>>> I'm launching a project in my spare time that some AMSAT members might
>>> be interested in. I'm a graduate student in Aerospace Engineering at
>>> Cornell, and I've been working on a ChipSat/Femtosatellite called
>>> Sprite for the last several years. I want to launch a CubeSat full of
>>> Sprites into low Earth orbit to demonstrate their viability in space.
>>> I'm raising money to build the hardware via the Kickstarter website
>>> (kicksat.org). Donors who sponsor a sprite will get to name it and
>>> specify the text that it will transmit. A group or club can also
>>> sponsor a fleet of Sprites together.
>>>
>>> I'm doing this to try to get more people involved in spaceflight. I
>>> want to make it easy enough and cheap enough so that anyone can take
>>> part.
>>>
>>> Please check out my page on Kickstarter for more information -
>>> kicksat.org
>>>
>>> Thanks,
>>> Zac Manchester
>>>
>>>
>>> ------------------------------
>>>
>>> Message: 10
>>> Date: Sun, 09 Oct 2011 17:50:48 +0100
>>> From: Clive Wallis<list1@xxxxx.xx.xx>
>>> To: amsat<amsat-bb@xxxxx.xxx>
>>> Subject: [amsat-bb] Re: G5500 Elevation Rotator Short Circuit?
>>> Message-ID:<4E91D0E8.2030702@xxxxx.xx.xx>
>>> Content-Type: text/plain; charset=windows-1252; format=flowed
>>>
>>> Many thanks Tim for your comments. From what you've said it sounds
>>> like
>>> a faulty motor. In the ones you've repaired have you been able to
>>> determine the cause of motor over heating?
>>>
>>> The problems I've had in the past have always been due to water getting
>>> into the units.
>>>
>>> 73 Clive G3CWV
>>>
>>> Hitchin, North Hertfordshire, UK
>>>
>>> On 07/10/2011 18:50, Tim Cunningham wrote:
>>>> The common failure of the motor windings is caused by heat which
>>>> causes the enamel coated wire to breakdown. When the enamel breaks
>>>> down an inner winding short results.
>>>>
>>>> I have successfully rewound motor windings on these rotators just to
>>>> say it could be done, but it takes some work (not recommended).
>>>>
>>>> I have never seen one of these motors with an open winding. The
>>>> failure mode on the 8 that ateur 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: 11
>>> Date: Sun, 09 Oct 2011 10:38:41 -0700
>>> From: Bill Ress<bill@xxxxxxxxxxx.xxx>
>>> To: amsat-bb@xxxxx.xxx
>>> Subject: [amsat-bb] Re: KickSat - a personal spacecraft of your own in
>>> space
>>> Message-ID:<4E91DC21.70205@xxxxxxxxxxx.xxx>
>>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>>
>>> Interesting idea Zac, but I have a few questions.
>>>
>>> Will each Sprite have it's own frequency?
>>>
>>> Since these Sprites are operating in the Amateur satellite bands, how
>>> will you license them?
>>>
>>> How will you handle the frequency coordination of these transmitters?
>>>
>>> Regards...Bill - N6GHz
>>>
>>>
>>>
>>> On 10/9/2011 6:22 AM, Zac Manchester wrote:
>>>> Hello,
>>>>
>>>> I'm launching a project in my spare time that some AMSAT members might
>>>> be interested in. I'm a graduate student in Aerospace Engineering at
>>>> Cornell, and I've been working on a ChipSat/Femtosatellite called
>>>> Sprite for the last several years. I want to launch a CubeSat full of
>>>> Sprites into low Earth orbit to demonstrate their viability in space.
>>>> I'm raising money to build the hardware via the Kickstarter website
>>>> (kicksat.org). Donors who sponsor a sprite will get to name it and
>>>> specify the text that it will transmit. A group or club can also
>>>> sponsor a fleet of Sprites together.
>>>>
>>>> I'm doing this to try to get more people involved in spaceflight. I
>>>> want to make it easy enough and cheap enough so that anyone can take
>>>> part.
>>>>
>>>> Please check out my page on Kickstarter for more information -
>>>> kicksat.org
>>>>
>>>> Thanks,
>>>> Zac Manchester
>>>> _______________________________________________
>>>> 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 6, Issue 558
>>> ****************************************
>>
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
>> Not an AMSAT-NA member? Join now to support the amateur satellite
>> program!
>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 6, Issue 562
****************************************
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