December 2007 - AMSAT-BB - mailman.amsat.org

A few volunteers needed
by Robert McGwier 21 Dec '07

21 Dec '07

I am putting out a call for volunteers to help with some specific prototyping tasks that AMSAT needs to do in the early part of 2008. http://www.amsat.org for those unfamiliar with the organization. The skills needed are 1) TIME ;-) 2) I need FPGA programming help for a Virtex 2. It will be used to prototype several different functions but a specific parallel channel demodulator, single carrier modulator, FEC generation and decoding need to be done. Existing cores that are not encumbered with IP are required so if that has to be new work, that is what it is. I also need for a separate task to develop a PWM modulator to drive a switching power supply. 3) I need switching power supply designers to come out of the wood work and join in with an RF development effort. While AMSAT has some power supply volunteers, they are mostly engaged. 4) I need up and down converters for 3.4 and 5.7 GHz that will be used to generate and receive hard limited constant envelope signals. Efficiency is paramount but this is a prototype. Functioning would be ideal! 5) We could use people with RF test equipment and labs at their disposal to do tests on these prototypes. I think we are moving into an exciting and higher intensity time in AMSAT and it is my hope that some of these things will interest you. There will needs to be a meeting in January in the D.C. area, absolutely no later than Mid February if you are interested. If any of this sounds remotely interesting to you, please contact me at my email address. Bob -- AMSAT Director and VP Engineering. Member: ARRL, AMSAT-DL, TAPR, Packrats, NJQRP, QRP ARCI, QCWA, FRC. ARRL SDR WG Chair “An optimist may see a light where there is none, but why must the pessimist always run to blow it out?” Descartes

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ANDE 1 year in space & working fine !
by Henk, PA3GUO 21 Dec '07

21 Dec '07

ANDE is now exactly one year in space, and will de-orbit within the next days. Telemetry reception using a 2x6 elements antenna (no pre-amplifier) is still fine. 09:29:38 !ANDE-1>BEACON:T#001,002,010,009,004,003,01000000,414 09:29:49 !ANDE-1>BEACON:T#002,016,175,159,002,008,00000110,414 09:29:58 !ANDE-1>BEACON:T#003,139,045,048,045,214,11100001,414 09:30:08 !ANDE-1>BEACON:T#004,157,136,160,139,152,10101111,414 09:30:19 !ANDE-1>BEACON:T#005,002,010,009,004,003,01000000,414 09:30:29 !ANDE-1>BEACON:T#006,016,175,158,002,008,00000110,414 09:30:38 !ANDE-1>BEACON:T#007,138,046,048,045,214,11100001,414 09:30:48 !ANDE-1>BEACON:T#008,157,136,161,139,151,10101111,414 11:01:45 !ANDE-1>BEACON:T#003,135,045,048,045,214,11100001,593 11:01:54 !ANDE-1>BEACON:T#004,155,136,152,146,155,10101111,593 11:02:04 !ANDE-1>BEACON:T#005,002,009,009,004,003,01000000,593 11:02:15 !ANDE-1>BEACON:T#006,155,181,155,001,036,00000111,593 11:02:24 !ANDE-1>BEACON:T#007,139,046,048,045,214,11100001,593 11:02:44 !ANDE-1>BEACON:T#009,002,010,009,004,003,01000000,593 11:02:54 !ANDE-1>BEACON:T#010,016,181,155,001,036,00000110,593 11:03:04 !ANDE-1>BEACON:T#011,139,046,048,045,214,11100001,593 11:03:24 !ANDE-1>BEACON:T#013,002,009,009,004,003,01000000,593 11:03:34 !ANDE-1>BEACON:T#014,016,181,155,001,036,00000110,593 11:03:45 !ANDE-1>BEACON:T#015,139,045,048,045,214,11100001,593 12:32:10 !ANDE-1>BEACON:T#001,017,182,157,001,061,00000110,000 12:32:54 !ANDE-1>BEACON:T#002,139,046,048,045,214,11100001,386 12:33:04 !ANDE-1>BEACON:T#003,155,159,165,150,156,10101111,386 12:33:14 !ANDE-1>BEACON:T#004,005,010,009,004,003,01000000,386 12:33:24 !ANDE-1>BEACON:T#005,016,182,157,001,059,00000110,386 12:33:34 !ANDE-1>BEACON:T#006,139,046,048,045,214,11100001,386 12:33:44 !ANDE-1>BEACON:T#007,155,158,166,150,156,10101111,386 12:33:54 !ANDE-1>BEACON:T#008,005,010,009,004,003,01000000,386 12:34:04 !ANDE-1>BEACON:T#009,016,182,157,001,059,00000110,386 12:34:14 !ANDE-1>BEACON:T#010,139,046,048,045,214,11100001,386 12:34:24 !ANDE-1>BEACON:T#011,155,157,165,149,155,10101111,386 Henk, PA3GUO http://www.qsl.net/pa3guo

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ANDE final tracking
by Robert Bruninga 21 Dec '07

21 Dec '07

ANDE was doing well on the last pass at about 2000z on the 21st. I have to leave now for Grandma's and so cannot command high telemetry rates. This means ANDE will not be heard over the east coast unless she wakes up on her own and she hears packets. Then she will only beacon telemetry once a minute. So, I am taking a risk here and authorizing unattended beacons at a 30 second rate. This should keep the channel busy enough to wake ANDE up. Once she wakes, you can back off to let others in. The original primary lithium cells are doing just fine. No drop in voltage apparent since launch. In fact, voltage appears up these last few days due to higher temps. Good luck. My IGATE is left on and my beam is pointed WNW from Maryland. Watching packets on http://pcsat.aprs.org And http://www.ew.usna.edu/~bruninga/ande-ops.html Bob, WB4APR

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Laptops
by Arlon Nelson 21 Dec '07

21 Dec '07

Whats the deal on the free XO-1 laptops? How do you get one? Sounds to good to be true. 73, Nels, WØTUP Minot, North Dakota anelson(a)min.midco.net - w0tup(a)arrl.net http://min.midco.net/ws Ward County - Grid Locator DN98if SKCC 31 - Flying Pigs 590 - QRPp-I #760 ARRL - FISTS #8610 - CC #1310 - FISTS WAS #143 FISTS PLATINUM #365 - FISTS SILVER #367 ARRL SSTV WAS #33 - IVCA MIXED BAND SSTV #1 40 MTR CW WAS - DXCC # 39623 *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* Two antennas met on a tower, fell in love and got married. The ceremony wasn't much, but the reception was excellent. *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*

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ANDE NO MORE?
by Mr Jeffrey L Ross 21 Dec '07

21 Dec '07

FOLKS, YESTERDAY NO COPY FROM ANDE, TODAY NO COPY ALSO, IS IT DOWN? ONE MORE PASS THIS AFTERNOON TO LISTEN FOR. KC8GKF

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Re: LEO EmComm (and Meteor Scatter as well)
by Robert Bruninga 21 Dec '07

21 Dec '07

> HELLO, DID I HAVE MY EMCOMM EMAIL MSG > SET UP RIGHT WITH UNPROTO CQ VIA > ANDE-1,SGATE,WIDE1-1 > > OR DO I JUST MAKE IT UNPROTO CQ VIA WIDE1-1? Either will do and also VIA ARISS will do. But ANDE is so low now that it is rare to get an overhead pass (close enough for it to hear you). It is far easier to get your message through on the same frequency and using the same path via ISS which is also on 145.825. You don't have to do anything different if you use the same path for both... UNPROTO APRS VIA ARISS. > WILL GIVE IT ONE TRY... WILL THIS ALSO WORK WITH ISS? Oops. Yes, VIA ARISS for both. Bob, WB4APR > > KC8GKF > > AH IT LOOKS LIKE MY EMAIL NEVER MADE IT OUT FROM THIS PC. > > > HERE IT WAS: > > HAD IT SET UP LIKE THIS > UNPROTO CQ VIA ANDE-1,SGATE,WIDE1-1 > BT :EMAIL RADIOOPERATOR(a)COMCAST.NET MSG: HAPPY HOLIDAYS > FROM KC8GKF > AND FAMILY TEST MSG. > > BEACON EVERY 1 MIN > > > OR SHOULD IT BE : > UNPROTO CQ VIA WIDE1-1 > BT :EMAIL RADIOOPERATOR(a)COMCAST.NET MSG: HAPPY HOLIDAYS > FROM KC8GKF AND > FAMILY TEST MSG. > > > > KC8GKF > > HAPPY HOLDIAYS > >

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IC-910H UX-910 Unit Question
by John Henderson 21 Dec '07

21 Dec '07

I am considering buying the UX-910. When installing the 1200mhz unit how does it display? I can't find any docs on how to use the unit? Thanks for any help, I must be missing something in the literature. John John Henderson N4NAB 212 Bayside Drive Cape Carteret, NC 28584 252-725-2744 <mailto:[email protected]> n4nab(a)amsat.org <http://www.amsat.org/> http://www.amsat.org/

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Re: IC-910H UX-910 Unit Question
by Skip Prinsen 21 Dec '07

21 Dec '07

Hi John, The physical installation is listed in the documentation with the UX-910 1200Mhz Band Unit. If you look on page 73 of the Instruction Manual for the IC-910H it also gives instructions for installing the unit. The operational display is explained in the 910H manual on pages 19-21. Pressing and holding the BAND M/S button the front of the radio will switch the unselected band in place of one of the displayed bands. You basically only have to bands that you can operate at a time. I hope that I have not confused you. It is explained in the manual. The manual can be downloaded at the following URL. http://www.icomamerica.com/en/downloads/Default.aspx?Category=31 73 de Skip W7PN At 04:23 PM 12/21/2007, you wrote: >Send AMSAT-BB mailing list submissions to > amsat-bb(a)amsat.org > >To subscribe or unsubscribe via the World Wide Web, visit > http://amsat.org/mailman/listinfo/amsat-bb >or, via email, send a message with subject or body 'help' to > amsat-bb-request(a)amsat.org > >You can reach the person managing the list at > amsat-bb-owner(a)amsat.org > >When replying, please edit your Subject line so it is more specific >than "Re: Contents of AMSAT-BB digest..." > > >Today's Topics: > > 1. Re: One-Laptop-per-Child two XO-1 ? (Ricardo Trujillo) > 2. Re: Tracking Santa ? (Paul Luggar) > 3. IC-910H UX-910 Unit Question (John Henderson) > 4. Re: [SPAM] Re: One-Laptop-per-Child two XO-1 ? (Robert Bruninga) > 5. Re: Looks like ANDE is coming down! (Robert Bruninga) > 6. Re: [SPAM] Re: AO51 Signals (Andrew Glasbrenner) > 7. Re: Orbital Classroom -Where is it????????? (R.Haighton) > 8. Tracking or Talking To Santa ? (James) > 9. LEO EmComm (and Meteor Scatter as well) (Robert Bruninga) > 10. Re: Looks like ANDE is coming down! (Stefan Wagener) > 11. Out of Office (Martha) > 12. Re: [SPAM] Re: Re: [SPAM] Re: AO51 Signals (Andrew Rich) > 13. Re: One-Laptop-per-Child two XO-1 ? (David Bern) > 14. Re: [SPAM] Re: One-Laptop-per-Child two XO-1 ? (David Bern) > > >---------------------------------------------------------------------- > >Message: 1 >Date: Fri, 21 Dec 2007 08:44:37 -0500 >From: Ricardo Trujillo <hk4bha(a)comcast.net> >Subject: [amsat-bb] Re: One-Laptop-per-Child two XO-1 ? >To: Jim Jerzycke <kq6ea(a)pacbell.net> >Cc: amsat-bb(a)amsat.org, 'David Bern' <DavidBern(a)Engineer.com> >Message-ID: <476BC345.8040207(a)comcast.net> >Content-Type: text/plain; charset=ISO-8859-1; format=flowed > >Same here, waiting for mine to arrive. >Happy Holidays, >Ricardo, W3/HK4BHA > > > > > >Jim Jerzycke wrote: > > Still waiting for mine, but it's good to hear others > > are receiving theirs. > > Jim KQ6EA > > > > --- "Tom Azlin, N4ZPT" <n4zpt(a)cox.net> wrote: > > > > > >> Hi Bob, > >> > >> 2 of the 3 I am expecting came in today. So the 3rd > >> should be along > >> shortly. No notice that they were coming. > >> > >> 73, Tom n4zpt > >> > >> Robert Bruninga wrote: > >> > >>> OLPC: > >>> > >>> Anyone know when to expect delivery on the > >>> > >> one-laptop-per-child, > >> > >>> or did both of mine go to peru? I think several > >>> > >> people on here > >> > >>> ordered one. > >>> > >>> Bob, WB4APR > >>> > >>> > >>>> -----Original Message----- > >>>> From: David Bern [mailto:[email protected]] > >>>> Sent: Thursday, November 15, 2007 8:28 AM > >>>> To: bruninga(a)usna.edu > >>>> Cc: Tom Azlin, N4ZPT; David Bern; Adam Bern > >>>> Subject: Re: APRS idea and ordered two XO-1 > >>>> > >>>> Bob: > >>>> > >>>> Maybe we could all get together for lunch or > >>>> > >> dinner > >> > >>>> with our new XO-1 computers.... Note that the > >>>> software in the XO-1s is open source and we > >>>> should be able run the mesh networking software > >>>> on any Linux computer.... > >>>> > >>>> The Hinternet folks have playing with 803.11 for > >>>> years now. Do a Google search on "HSMM". > >>>> WiMax technology is coming down line and that is > >>>> > >> more > >> > >>>> oriented as a MAN (metropolitan area network). > >>>> > >>>> David W2LNX > >>>> > >>> > >> _______________________________________________ > >> Sent via AMSAT-BB(a)amsat.org. 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(a)amsat.org. 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: 2 >Date: Fri, 21 Dec 2007 14:08:50 -0000 >From: "Paul Luggar" <luggsey(a)hotmail.com> >Subject: [amsat-bb] Re: Tracking Santa ? >To: "Roger Kolakowski" <rogerkola(a)aol.com>, "Keith N4ZQ" > <n4zq(a)netzero.net>, <amsat-bb(a)amsat.org> >Message-ID: <BAY123-DAV13FB0995D2C6AEBF17616EB95E0(a)phx.gbl> >Content-Type: text/plain; format=flowed; charset="iso-8859-1"; > reply-type=original > >I always "launch" a Santa on APRS over Christmas, keep amn eye out for him! >Happy Christmas All! > > >Paul Luggar. >M0SCI > > > >----- Original Message ----- >From: "Roger Kolakowski" <rogerkola(a)aol.com> >To: "Keith N4ZQ" <n4zq(a)netzero.net>; <amsat-bb(a)amsat.org> >Sent: Friday, December 21, 2007 1:25 PM >Subject: [amsat-bb] Re: Tracking Santa ? > > > > I'm sure Santa uses a Polar Orbit so that he can restock every hour and a > > half or so...I would bet that "flyovers" ranging from around Midnight to 4 > > am would pretty much fit his needs if Tom Hanks and Chevy Chase don't get > > in > > his way. > > > > Roger > > WA1KAT > > > > ----- Original Message ----- > > From: "Keith N4ZQ" <n4zq(a)netzero.net> > > To: <amsat-bb(a)amsat.org> > > Sent: Friday, December 21, 2007 5:37 AM > > Subject: [amsat-bb] Tracking Santa ? > > > > > >> The grand kids would like to track Santa Christmas eve, just to make sure > > he is on his way. Anyone got any Keps for him and his team of reindeer? > >> > >> Merry Christmas.. Keith N4ZQ > >> > >> > >> _____________________________________________________________ > >> Free comparison of top car rental companies. Click Here! > >> > > > http://thirdpartyoffers.netzero.net/TGL2221/fc/Ioyw6i4uHs754D7Oow5r9pOqxzKJ… > >> > >> > >> > >> _______________________________________________ > >> Sent via AMSAT-BB(a)amsat.org. 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(a)amsat.org. 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: Fri, 21 Dec 2007 09:19:46 -0500 >From: "John Henderson" <jah(a)ec.rr.com> >Subject: [amsat-bb] IC-910H UX-910 Unit Question >To: <amsat-bb(a)amsat.org> >Message-ID: <003701c843dc$8a7e53a0$9f7afae0$(a)rr.com> >Content-Type: text/plain; charset="us-ascii" > >I am considering buying the UX-910. When installing the 1200mhz unit how >does it display? I can't find any docs on how to use the unit? > >Thanks for any help, I must be missing something in the literature. > > > > > > > > John > > John Henderson N4NAB > > 212 Bayside Drive > > Cape Carteret, NC 28584 > > 252-725-2744 > > <mailto:[email protected]> n4nab(a)amsat.org > > <http://www.amsat.org/> http://www.amsat.org/ > > > > > >------------------------------ > >Message: 4 >Date: Fri, 21 Dec 2007 09:22:34 -0500 >From: "Robert Bruninga" <bruninga(a)usna.edu> >Subject: [amsat-bb] Re: [SPAM] Re: One-Laptop-per-Child two XO-1 ? >To: <vk4tec(a)people.net.au>, "'Doug Faunt N6TQS +1-510-655-8604'" > <faunt(a)panix.com>, <n4zpt(a)cox.net> >Cc: NAdamBern(a)aol.com, amsat-bb(a)amsat.org, DavidBern(a)Engineer.com >Message-ID: <022101c843dc$f02a28a0$42577a83(a)ewlab.usna.edu> >Content-Type: text/plain; charset="us-ascii" > > > Re: One-Laptop-per-Child two XO-1 ? > > Have I missed something ? > > Are these good for Ham Radio applications ? > >The way I see it: >* Goal is $100 laptop >* Runs under Linux >* Excellent visibility in bright sun >* Runs Display uses only 0.1W in sun >* Can be charged by solar power >* built-in 802.11 wireless plus automatic MESHING with others >* Targeted at youth worldwide... > >And on and on... > >Seems the perfect platform for HAM radio! > >Bob, WB4APR > > > > > > -------------------------------------------------------------- > > -------------- > > Andrew Rich VK4TEC > > vk4tec(a)people.net.au <mailto:[email protected]> > > http://www.tech-software.net > > > > > > > > > > -----Original Message----- > > From: amsat-bb-bounces(a)amsat.org >[mailto:[email protected]]On > > Behalf Of Doug Faunt N6TQS +1-510-655-8604 > > Sent: Friday, 21 December 2007 4:23 PM > > To: n4zpt(a)cox.net > > Cc: NAdamBern(a)aol.com; amsat-bb(a)amsat.org; >DavidBern(a)Engineer.com > > Subject: [SPAM] [amsat-bb] Re: One-Laptop-per-Child two XO-1 ? > > Importance: Low > > > > > > I got mine- no notice. > > > > 73, doug > > > > Date: Thu, 20 Dec 2007 22:07:49 -0500 > > From: "Tom Azlin, N4ZPT" <n4zpt(a)cox.net> > > > > Hi Bob, > > > > 2 of the 3 I am expecting came in today. So the 3rd should >be along > > shortly. No notice that they were coming. > > > > 73, Tom n4zpt > > > > Robert Bruninga wrote: > > > OLPC: > > > > > > Anyone know when to expect delivery on the >one-laptop-per-child, > > > or did both of mine go to peru? I think several people >on here > > > ordered one. > > > > > > Bob, WB4APR > > _______________________________________________ > > Sent via AMSAT-BB(a)amsat.org. 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(a)amsat.org. 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: Fri, 21 Dec 2007 09:27:13 -0500 >From: "Robert Bruninga" <bruninga(a)usna.edu> >Subject: [amsat-bb] Re: Looks like ANDE is coming down! >To: "'Ron Hashiro'" <rhashiro(a)hawaiiantel.net>, "'Lauret& Henk'" > <hamoen(a)iae.nl> >Cc: amsat-bb(a)amsat.org >Message-ID: <022201c843dd$9489ee80$42577a83(a)ewlab.usna.edu> >Content-Type: text/plain; charset="us-ascii" > >Ron, same here. During my best AM pass, I only decoded one >packet! > >Warming and cooling is expected. The warming we have been >seeing is mostly due to ANDE's orbit precessing into a full sun >phase that also happened to coincide with the winter solstice. > >That peak for ANDE just passed yesterday, so it will be cooling. >(Eclipses are getting longer). It will be interesting to see >how much of the warming was due to the sun angles and if any of >it yet is due to friction.. > >See the trends on the "side A telemetry" link on the ANDE web >page: > >http://www.ew.usna.edu/~bruninga/ande-ops.html > >Bob > > > -----Original Message----- > > From: Ron Hashiro [mailto:[email protected]] > > Sent: Friday, December 21, 2007 2:51 AM > > To: Robert Bruninga; 'Lauret& Henk' > > Subject: Looks like ANDE is coming down in about a day or so >(?) > > > > ANDE's at 118 sm, according to the keps. Mighty low. > > > > The onboard temperature started to dip. Unexpected. > > > > I'll be off island starting Dec 27. The remaining passes are > > poor for > > me. Sorry Henk and Bob, I don't make it for the certificate. >I did > > hear audio, but could not decode the S3 signal on a 24 degree > > pass with > > a 3 el Arrow. > > > > Ron H > > > > > > > >------------------------------ > >Message: 6 >Date: Fri, 21 Dec 2007 09:44:28 -0500 >From: "Andrew Glasbrenner" <glasbrenner(a)mindspring.com> >Subject: [amsat-bb] Re: [SPAM] Re: AO51 Signals >To: <vk4tec(a)people.net.au>, <amsat-bb(a)amsat.org> >Message-ID: <13FC590193724F8FA00A87DF2AF384D6@Andrewlaptop> >Content-Type: text/plain; format=flowed; charset="iso-8859-1"; > reply-type=original > >AO-51 is LHCP on 435.150, RHCP on 435.300, and linear on 2401.200. If your >helix is LHCP and you are listening to the .300 voice downlink, you are in >the neighborhood of 20db down from a RHCP helix. > >73, Drew KO4MA > >----- Original Message ----- >From: "Andrew Rich" <vk4tec(a)people.net.au> >To: "Jeff Mock" <jeff(a)mock.com>; <amsat-bb(a)amsat.org> >Sent: Friday, December 21, 2007 6:20 AM >Subject: [amsat-bb] Re: [SPAM] Re: AO51 Signals > > > > Does ao-51 have circular ? > > > > I have LHCP on my antenna > > > > > > > > > ---------------------------------------------------------------------------- > > Andrew Rich VK4TEC > > vk4tec(a)people.net.au <mailto:[email protected]> > > http://www.tech-software.net > > > > > > > > > > -----Original Message----- > > From: Jeff Mock [mailto:[email protected]] > > Sent: Friday, 21 December 2007 9:16 PM > > To: vk4tec(a)people.net.au; amsat-bb(a)amsat.org > > Subject: [SPAM] Re: [amsat-bb] AO51 Signals > > Importance: Low > > > > > > The RG-213 loss should be less than 3dB if I remember correctly, I think > > you're okay there. Did you twist the helix the right direction? > > > > jeff > > > > > > Andrew Rich wrote: > >> Hello > >> > >> I built a 10 turn helix for 435 MHz. > >> > >> I have 15 meters of RG-213. > >> > >> Radio is an ICOM 706 mkii G > >> > >> I am not getting strong signals like I would have expected ? > >> > >> Can someone share their setups and signal strengths ? > >> > >> Maybe a pre-amp might help ? > >> > >> Am I getting too much loss in the cable ? > >> > >> > >> -------------------------------------------------------------------------- > > -- > >> Andrew Rich VK4TEC > >> vk4tec(a)people.net.au > >> http://www.tech-software.net > >> > >> > >> _______________________________________________ > >> Sent via AMSAT-BB(a)amsat.org. 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(a)amsat.org. Opinions expressed are those of the author. > > Not an AMSAT-NA member? Join now to support the amateur satellite program! > > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > >------------------------------ > >Message: 7 >Date: Fri, 21 Dec 2007 10:03:07 -0500 >From: "R.Haighton" <fhaighton(a)cogeco.ca> >Subject: [amsat-bb] Re: Orbital Classroom -Where is it????????? >To: "'Stefan Wagener'" <stefan_wagener(a)hotmail.com>, > <amsat-bb(a)amsat.org> >Message-ID: <004d01c843e2$9abf5740$d03e05c0$@ca> >Content-Type: text/plain; charset="us-ascii" > >Stefan, >Well AMSAT does have a director of Education but unfortunately I don't see >too much happening. >I fully support your Idea, and in time past there was so many good papers at >the symposium on the (then being built) >Satellites that they were a complete technical education program. I recall >the various members of the AO-40 team explaining about every system being >designed and the problems encountered and the solutions, etc >Similarly the means of heat dissipation (AO-40) and stabilization of the >spacecraft (A0-40 & Microsats). So much good stuff that it made our heads >spin! >One came away from the Meetings with determination to see the projects >completed even if it meant "Empty Pockets!" >I would like to hope that through your initiative we could return to those >days..... This is not to take anything away from Eagle or P4 but to >supplement those programs. >73 >Robin Haighton VE3FRH >Past President AMSAT > >-----Original Message----- >From: amsat-bb-bounces(a)amsat.org [mailto:[email protected]] On >Behalf Of Stefan Wagener >Sent: December 20, 2007 11:19 PM >To: amsat-bb(a)amsat.org >Subject: [amsat-bb] Orbital Classroom -Where is it????????? > >Hi folks, > >Having read through many, many emails about Eagle, GEO's and other stuff I >would like to introduce an idea that has captured me for a few years (!) now >and has never come up. We all agree (I assume) that amateur radio and >satellites is a great combination and fun. I assume most of us love it and >those that don't at least make a living from it otherwise they wouldn't do >it. In addition, the big majority of us have some grey hairs, but we are >still trying to learn and challenge our brains (scary thought). Having said >that, when I came back from the AMSAT annual meeting (symposium) this year I >felt we missed a great opportunity and to be more specific we have absolute >nothing in place to teach and educate our members and the community. Yes, we >go to hamfests and events and have a pretty PowerPoint or in the "parking >lot" demo, but where are the courses, the classes that help us better >understand for example the orbital mechanics of a satellites, the satellite >communication principles for VHF and UHF, the design of L and S band >antennas? All the stuff that goes beyond our basic license and would keep us >learning???? > >I look at the ARRL and see many exciting courses and AMSAT has nothing in >place. Some of the material has been written up and I applaud Gould Smith >and others that took the time to write these documents. > >The problem is that they are books! No interaction, no feedback, etc. I >believe we can do so much more. > >Why don't we have pre-conference courses at AMSAT meetings that allow our >participants to learn? Why don't we offer certificates for continuing >education based on accomplishments in learning and become much more >educated? Where is the course on emergency preparedness and satellites (GEOs >anyone). How do I interpret two line Keppler data and what will happen if I >modify some of those numbers (ANDE re-entry anyone)? How about a basic >course in SRD or building small beautiful satellites and lessons learned >(Bob Bruninga's ideas). All this would add value, probably generate some >resources for AMSAT (course fees) and make us proud of learning and sharing >knowledge and not just opinions. For example, I would have no problem adding >$ 30 -50 to my registration fee for the AMSAT symposium and having a full >day workshop. Everyone else is doing it and all the conferences I go to. > >No, I am not talking about amateur satellite 101 for newcomers (that still >is important), I am talking about "meat" for those that are part of the >hobby already and want to move to the next level of knowledge. We have >thousands of members and our pool of potential instructors is big. I would >highly encourage the board to seriously look at this. I know that Rick >Hambly is fully committed to make the education a bigger part of AMSAT and >we need to support him. I for one have no problem in teaching and >volunteering for a course at the next AMSAT meeting but it would be very >nice if you share your thoughts about this. Maybe it is just me and everyone >else is fine but maybe the next "Orbital Classroom" is finally that, a >classroom and not just a two page paper in the journal! > > > >Have a great Christmas and Holiday Season and many contacts in 2008. > > > >_______________________________________________ >Sent via AMSAT-BB(a)amsat.org. 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: Fri, 21 Dec 2007 10:14:08 -0500 >From: "James" <kb7tbt(a)gmail.com> >Subject: [amsat-bb] Tracking or Talking To Santa ? >To: <amsat-bb(a)amsat.org> >Message-ID: <004601c843e4$238878d0$7d00a8c0@kb7tbt> >Content-Type: text/plain; format=flowed; charset="iso-8859-1"; > reply-type=original > >This is a great answer!.. >Just wanted to remind or inform folks that Santa will be on 14.300 dec >23/24. >Bring the kids! > >James >KB7TBT > > > Sorry, Keith, Santa's trajectory is far to complex to be described by > > Keps. The stochastic nature of disturbances and external forces (e.g. > > Cindy Lou Who) are not well modeled by our tracking programs. NORAD has, > > however, developed special techniques to track him. Please see > > http://www.noradsanta.org/ for details. > > > > -Joe KM1P > > >------------------------------ > >Message: 9 >Date: Fri, 21 Dec 2007 10:16:49 -0500 >From: "Robert Bruninga" <bruninga(a)usna.edu> >Subject: [amsat-bb] LEO EmComm (and Meteor Scatter as well) >To: <amsat-bb(a)amsat.org> >Message-ID: <022b01c843e4$822a3db0$42577a83(a)ewlab.usna.edu> >Content-Type: text/plain; charset="us-ascii" > > > ...there are some show stoppers, at least when > > using LEO birds. It takes a fair amount of > > theoretical understanding to get to the point where > > operating practice can yield functional capability. > >Agree completely. > >That is why I think a very thin slice of this puzzle is the LEO >APRS channel where the sender needs zero knowledge about >satellites. He just sets his emergency outgoing message into >his APRS radio or TNC, and leaves it running for a few hours, >and he can be assured that his email is delivered. > >If ISS is working, then return messages to the mobile are >possible. > >Again, not at all suggesting that this detract even the >slightest from the great initiaves that are now underway for >real-time EmComm. But because it is there now (sorta) and is so >easy to add to, and can be used by anyone with even the basic >understanding of a TNC or packet (though that knowledge has >really deminished by an order of magnitude since the 80's and >90's), I think it is worth practicing. > >Also, this EmComm low-rate outbound Email concept has spawned a >new look at 6 meter Meteor Scatter comunications using the cheap >100W 6m radios that are so easy to find these days. If we just >add 6m receivers to many of our existing APRS Igates, then an >emergecy email can be transmittied out of an area for an hour or >so and have very good probbility that it was deliverd. > >See the web page: >http://www.ew.usna.edu/~bruninga/meteors.html > >With the global APRS network listening 24/7 everywhere for >messages (on VHF, HF, Satellites and now Meteor Scatter, only >the sender has to SEND his EmComm Email report, the rest is >already done. > >Bob, WB4APR > > > >------------------------------ > >Message: 10 >Date: Fri, 21 Dec 2007 09:37:20 -0600 >From: Stefan Wagener <stefan_wagener(a)hotmail.com> >Subject: [amsat-bb] Re: Looks like ANDE is coming down! >To: <bruninga(a)usna.edu>, "'Ron Hashiro'" <rhashiro(a)hawaiiantel.net>, > "'Lauret& Henk'" <hamoen(a)iae.nl> >Cc: amsat-bb(a)amsat.org >Message-ID: <BAY130-W414D7460BF48B0F191517CF65E0(a)phx.gbl> >Content-Type: text/plain; charset="iso-8859-1" > > >Hi Bob, > >Here you go from this morning: > >15:22 -15:24 (UTC), 12-21-07; EN19lx >........................................................................... > >Fm ANDE-1 To BEACON <UI pid=F0 >Len=39 >[09:22:56]T#001,016,182,155,001,108,00000110,194 > >Fm ANDE-1 To BEACON <UI pid=F0 >Len=39 >[09:23:48]T#002,153,159,135,159,150,10101111,381 > >Fm ANDE-1 To BEACON <UI pid=F0 >Len=39 >[09:24:08]T#004,017,182,155,001,108,00000110,381 > >..........................................................................> >From: bruninga(a)usna.edu> To: rhashiro(a)hawaiiantel.net; >hamoen(a)iae.nl> Date: Fri, 21 Dec 2007 09:27:13 -0500> CC: >amsat-bb(a)amsat.org> Subject: [amsat-bb] Re: Looks like ANDE is >coming down!> > Ron, same here. During my best AM pass, I only >decoded one> packet!> > Warming and cooling is expected. The warming >we have been> seeing is mostly due to ANDE's orbit precessing into a >full sun> phase that also happened to coincide with the winter >solstice. > > That peak for ANDE just passed yesterday, so it will >be cooling.> (Eclipses are getting longer). It will be interesting >to see> how much of the warming was due to the sun angles and if any >of> it yet is due to friction..> > See the trends on the "side A >telemetry" link on the ANDE web> page:> > >http://www.ew.usna.edu/~bruninga/ande-ops.html> > Bob > > > >-----Original Message-----> > From: Ron Hashiro >[mailto:[email protected]] > > Sent: Friday, Dec! > ember 21, 2007 2:51 AM> > To: Robert Bruninga; 'Lauret& Henk'> > > Subject: Looks like ANDE is coming down in about a day or so> > (?)> > > > ANDE's at 118 sm, according to the keps. Mighty > low.> > > > The onboard temperature started to dip. > Unexpected.> > > > I'll be off island starting Dec 27. The > remaining passes are > > poor for > > me. Sorry Henk and Bob, I > don't make it for the certificate.> I did > > hear audio, but could > not decode the S3 signal on a 24 degree > > pass with > > a 3 el > Arrow.> > > > Ron H> > > > > > > _______________________________________________> Sent via > AMSAT-BB(a)amsat.org. 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: Fri, 21 Dec 2007 10:44:22 -0500 >From: Martha <martha(a)amsat.org> >Subject: [amsat-bb] Out of Office >To: amsat-bb(a)amsat.org >Message-ID: > <956751cf0712210744n68546b8u4aed5ae3e43e83fb(a)mail.gmail.com> >Content-Type: text/plain; charset=ISO-8859-1 > >After 30 years, I am taking 2 weeks off. I will be out of the office from >Dec 24- Jan 4th. Please note that the LVB boxes have not yet arrived so I >will begin calling people on the waiting list when I return. To speed the >process up, you can place your order on the store so it will be waiting for >me when I get back. Have a HEALTHY, HAPPY NEW YEAR! > >-- >73- Martha > > >------------------------------ > >Message: 12 >Date: Sat, 22 Dec 2007 01:50:18 +1000 >From: "Andrew Rich" <vk4tec(a)people.net.au> >Subject: [amsat-bb] Re: [SPAM] Re: Re: [SPAM] Re: AO51 Signals >To: "Andrew Glasbrenner" <glasbrenner(a)mindspring.com>, > <amsat-bb(a)amsat.org> >Message-ID: <LGEKIKIAKJPNFGILGJBBMEMPEBAA.vk4tec(a)people.net.au> >Content-Type: text/plain; charset="iso-8859-1" > >Thats interesting about the affect of wrong polarisation - 20dB > >According to my other info here that is about S4 to S7 difference. > > > > >---------------------------------------------------------------------------- >Andrew Rich VK4TEC >vk4tec(a)people.net.au <mailto:[email protected]> >http://www.tech-software.net > > > > >-----Original Message----- >From: Andrew Glasbrenner [mailto:[email protected]] >Sent: Saturday, 22 December 2007 12:44 AM >To: vk4tec(a)people.net.au; amsat-bb(a)amsat.org >Subject: [SPAM] Re: [amsat-bb] Re: [SPAM] Re: AO51 Signals >Importance: Low > > >AO-51 is LHCP on 435.150, RHCP on 435.300, and linear on 2401.200. If your >helix is LHCP and you are listening to the .300 voice downlink, you are in >the neighborhood of 20db down from a RHCP helix. > >73, Drew KO4MA > >----- Original Message ----- >From: "Andrew Rich" <vk4tec(a)people.net.au> >To: "Jeff Mock" <jeff(a)mock.com>; <amsat-bb(a)amsat.org> >Sent: Friday, December 21, 2007 6:20 AM >Subject: [amsat-bb] Re: [SPAM] Re: AO51 Signals > > > > Does ao-51 have circular ? > > > > I have LHCP on my antenna > > > > > > > > -------------------------------------------------------------------------- >-- > > Andrew Rich VK4TEC > > vk4tec(a)people.net.au <mailto:[email protected]> > > http://www.tech-software.net > > > > > > > > > > -----Original Message----- > > From: Jeff Mock [mailto:[email protected]] > > Sent: Friday, 21 December 2007 9:16 PM > > To: vk4tec(a)people.net.au; amsat-bb(a)amsat.org > > Subject: [SPAM] Re: [amsat-bb] AO51 Signals > > Importance: Low > > > > > > The RG-213 loss should be less than 3dB if I remember correctly, I think > > you're okay there. Did you twist the helix the right direction? > > > > jeff > > > > > > Andrew Rich wrote: > >> Hello > >> > >> I built a 10 turn helix for 435 MHz. > >> > >> I have 15 meters of RG-213. > >> > >> Radio is an ICOM 706 mkii G > >> > >> I am not getting strong signals like I would have expected ? > >> > >> Can someone share their setups and signal strengths ? > >> > >> Maybe a pre-amp might help ? > >> > >> Am I getting too much loss in the cable ? > >> > >> > >> ------------------------------------------------------------------------- >- > > -- > >> Andrew Rich VK4TEC > >> vk4tec(a)people.net.au > >> http://www.tech-software.net > >> > >> > >> _______________________________________________ > >> Sent via AMSAT-BB(a)amsat.org. 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(a)amsat.org. 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, 21 Dec 2007 06:50:21 -0500 >From: David Bern <DavidXBern(a)aol.com> >Subject: [amsat-bb] Re: One-Laptop-per-Child two XO-1 ? >To: n4zpt(a)cox.net >Cc: 'Adam Bern' <NAdamBern(a)aol.com>, 'David Bern' > <David.Bern(a)Engineer.com>, amsat-bb(a)amsat.org >Message-ID: <476BA87D.2040801(a)AOL.com> >Content-Type: text/plain; charset=ISO-8859-1; format=flowed > >I got FedEx emails *after* the XOs arrived. > >David W2LNX > > >n4zpt(a)cox.net wrote: > > Hi Bob, > > > > 2 of the 3 I am expecting came in today. So the 3rd should be along > > shortly. No notice that they were coming. > > > > 73, Tom n4zpt > > > > Robert Bruninga wrote: > >> OLPC: > >> > >> Anyone know when to expect delivery on the one-laptop-per-child, > >> or did both of mine go to peru? I think several people on here > >> ordered one. > >> > >> Bob, WB4APR > >>> -----Original Message----- > >>> From: David Bern [mailto:[email protected]] Sent: Thursday, > >>> November 15, 2007 8:28 AM > >>> To: bruninga(a)usna.edu > >>> Cc: Tom Azlin, N4ZPT; David Bern; Adam Bern > >>> Subject: Re: APRS idea and ordered two XO-1 > >>> > >>> Bob: > >>> > >>> Maybe we could all get together for lunch or dinner with our new > >>> XO-1 computers.... Note that the software in the XO-1s is open > >>> source and we should be able run the mesh networking software on any > >>> Linux computer.... > >>> > >>> The Hinternet folks have playing with 803.11 for years now. Do a > >>> Google search on "HSMM". WiMax technology is coming down line and > >>> that is more oriented as a MAN (metropolitan area network). > >>> > >>> David W2LNX > >> > >> > > > > > >------------------------------ > >Message: 14 >Date: Fri, 21 Dec 2007 06:53:09 -0500 >From: David Bern <DavidXBern(a)aol.com> >Subject: [amsat-bb] Re: [SPAM] Re: One-Laptop-per-Child two XO-1 ? >To: vk4tec(a)people.net.au >Cc: NAdamBern(a)aol.com, amsat-bb(a)amsat.org, Doug Faunt N6TQS > +1-510-655-8604 <faunt(a)panix.com>, DavidBern(a)Engineer.com >Message-ID: <476BA925.2090702(a)AOL.com> >Content-Type: text/plain; charset=ISO-8859-1; format=flowed > >Andrew: > >Allegedly these laptops are designed to visible in even direct >sunlight. My interest is figuring out how to run PSK-31 in these laptops. > >David W2LNX > >vk4tec(a)people.net.au wrote: > > Have I missed something ? > > > > Are these good for Ham Radio applications ? > > > > > > > > > ---------------------------------------------------------------------------- > > Andrew Rich VK4TEC > > vk4tec(a)people.net.au <mailto:[email protected]> > > http://www.tech-software.net > > > > > > > > > > -----Original Message----- > > From: amsat-bb-bounces(a)amsat.org [mailto:[email protected]]On > > Behalf Of Doug Faunt N6TQS +1-510-655-8604 > > Sent: Friday, 21 December 2007 4:23 PM > > To: n4zpt(a)cox.net > > Cc: NAdamBern(a)aol.com; amsat-bb(a)amsat.org; DavidBern(a)Engineer.com > > Subject: [SPAM] [amsat-bb] Re: One-Laptop-per-Child two XO-1 ? > > Importance: Low > > > > > > I got mine- no notice. > > > > 73, doug > > > > Date: Thu, 20 Dec 2007 22:07:49 -0500 > > From: "Tom Azlin, N4ZPT" <n4zpt(a)cox.net> > > > > Hi Bob, > > > > 2 of the 3 I am expecting came in today. So the 3rd should be along > > shortly. No notice that they were coming. > > > > 73, Tom n4zpt > > > > Robert Bruninga wrote: > > > OLPC: > > > > > > Anyone know when to expect delivery on the one-laptop-per-child, > > > or did both of mine go to peru? I think several people on here > > > ordered one. > > > > > > Bob, WB4APR > > _______________________________________________ > > Sent via AMSAT-BB(a)amsat.org. 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(a)amsat.org. 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 2, Issue 824 >****************************************

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Re: Looks like ANDE is coming down!
by Robert Bruninga 21 Dec '07

21 Dec '07

Ron, same here. During my best AM pass, I only decoded one packet! Warming and cooling is expected. The warming we have been seeing is mostly due to ANDE's orbit precessing into a full sun phase that also happened to coincide with the winter solstice. That peak for ANDE just passed yesterday, so it will be cooling. (Eclipses are getting longer). It will be interesting to see how much of the warming was due to the sun angles and if any of it yet is due to friction.. See the trends on the "side A telemetry" link on the ANDE web page: http://www.ew.usna.edu/~bruninga/ande-ops.html Bob > -----Original Message----- > From: Ron Hashiro [mailto:[email protected]] > Sent: Friday, December 21, 2007 2:51 AM > To: Robert Bruninga; 'Lauret& Henk' > Subject: Looks like ANDE is coming down in about a day or so (?) > > ANDE's at 118 sm, according to the keps. Mighty low. > > The onboard temperature started to dip. Unexpected. > > I'll be off island starting Dec 27. The remaining passes are > poor for > me. Sorry Henk and Bob, I don't make it for the certificate. I did > hear audio, but could not decode the S3 signal on a 24 degree > pass with > a 3 el Arrow. > > Ron H > >

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ISS crew ham contacts?
by francesco messineo 21 Dec '07

21 Dec '07

Hello, I didn't follow the satellite and related chat lately. I just wanted to know if voice contacts in the amateur bands from ISS crew are common or not. And if they do use amateur radio, what band is used? What are the best UTC interval to catch them? Thanks in advance and best regards Francesco IZ8DWF

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