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

Re: FYI -- One Laptop per Child (OLPC) Opportunity
by Bob Bruninga 12 Nov '07

12 Nov '07

As Tom points out, these $100 laptops-per-child mass produced for every kid on the planet should be the ham-radio target machine for just about everything we do. I can think of no better investment in ham radio, than making sure our stuff can run on these machines. And thereby get kids involved in HAM radio. As they come, they have 802.11g wireless for a self-building network from nothing. Out of the box, they will network, and the ads say, the 802.11 is more powerful than conventional wireless lans. Ham radio can bring some RF expertise to these networks. Because the laptop is supposed to be able to form this peer-to-peer social network throughtout a villiage as is. We can add some longer links... My first thought is a USB PSK-31 device that links that laptop, not just to he next hut in the villiage, but can use 5W radios on PSK-31 to reach the world. I think the target power for the whole laptop is around 1 watt. So it can be recharged on solar power. This thing just jumps out at me as a fundamental building block for ad-hoc emergnecy comms and funn coms and just about everything else we do with ham radio. Then we overlay on top of that, all the neat things we do in ham radio. As tom points, out, AMSATS etc. (And of course APRS) Winlink and all our other EMCOMM toys... Of course until they get to the millions of quantities, they are now costing $200 each, and you have to buy two for a total of $400 to get yours (the other one goes to a kid)... But its a great way to get one... and start developing code... Actually get two (4), so you can play both ends... WB4APR, Bob

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ic-pcr1500 + Satellite + Doppler ???
by CE3SOC Raul Romero 12 Nov '07

12 Nov '07

Hello ask someone help me say that software And as I run icom ic-pcr1500 to continue in the form and schedule automatic satellites as their frequencies for the automatic doppler Greetings Raul CE3SOC CHILE --------------------------------------------------------------------- "Are you still wasting your time with spam?... There is a solution!" Protected by GIANT Company's Spam Inspector The most powerful anti-spam software available. http://mail.spaminspector.com

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Po-63
by Auke de Jong, VE6PWN 12 Nov '07

12 Nov '07

I would like to draw attention to a unique occurance that I have noticed today and last night... I was sitting on 144.200.0 usb with spectran running on the compy for no good reason, when suddenly i noticed a carrier sweeping down through my scope. By itself, this would be nothing special, BUT I recognized a pattern: the sweep rate was not linear, but resembled that of doppler-shift from a passing LEO satellite! it started out at one rate, then got faster as it passed through my IF, and past zero-beat. I retuned down, and continued to observe it become slower, finally fading-out rather abruptly while still sweeping down at a slower rate. I could not find any reason why any terrestrial signal might do this, so I looked through my list of sats on Orbitron, to see if there was any hardware that had passed recently. I noticed that "PEHUENSAT-1[+]" had JUST LOS my horizon on it's ascending orbit, and had been almost directly overhead a few minutes before. I made a mental note, and decided to check again on a future pass to see if it happened again, just to rule-out other possibilities. Sure enough, this morning on orbit # 4414, I was again, monitoring 144.200.0 usb and doing other tasks when I looked over at the PC and saw the same pattern. A check of Orbitron, showed that PO-63 just SO happens to be almost LOS decending from overhead. This brings a question which begs to be answered: How can this signal seem to be coming from this satellite? As far I as I can tell by searching google, the satellite is no longer functioning. could it be a reflection of a terrestrial signal, or could it be generated somehow by a malfunctioning onboard transmitter? I would like to hear from others about comparable observations or other insight. Thanks, Auke, VE6PWN DO33

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My fingers are crossed
by Robert McGwier 12 Nov '07

12 Nov '07

http://www.bloomberg.com/apps/news?pid=20601102&sid=aDlXcqREUcnk&refer=uk

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Now this is fun!
by Ed Tump 12 Nov '07

12 Nov '07

Folks, Just a bit ago AO51 passed over my QTH (grid EN52) at an elevation of 57, I was able to hear my very first voice downlink on my mobile rig. I did not want to try and TX as it was too exciting just to hear traffic. I did not record the pass audio so I cannot even remember the call signs that I heard. I just know I heard something! I can't wait for the my birthday present now from the family next week, a new Arrow satellite antenna. Thanks to all who gave me tips on using pass software, methods, etc. Warm regards, Ed KC9GWK New AmSat Member

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Wanted!! Last call for 45G parts (any maker)
by Stargate 12 Nov '07

12 Nov '07

Hi all, I thought I would place one more "wanted" post before I place an order for New parts. It doesn't have to be made by Rohn only. Nello, or others makers parts are welcome so long as it fits 45G tower. I need the following.... AS455G accessory plate (rotor plate) BPL45G flat thrust bearing top adaptor TB3 Bearing 4ea. 45G bolt kits Please let me know soon since I will be placing my order sometime by the middle of this coming week. Thanks, 73's RoD KD0XX A good friend will come and bail you out of jail, A TRUE friend will be sitting next to you saying..... "DAMN THAT WAS FUN"

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AMSAT Journal
by Ed Long 12 Nov '07

12 Nov '07

Everyone, Due to a lack of articles and quite a bit of international travel on my part, the Sep/Oct issue of the Journal is very, very late. It is nearing completion and should be at the printer in the next few days. It should be in your hands in a couple of weeks. Sorry for the delay. DEADLINE: All of you potential authors should get busy! I'd love to have articles for the Nov/Dec issue as soon as you can get them to me. Normal deadline for this issue is Nov 15th. If you have anything for the Journal please get it to me as quickly as possible. I have more traveling to do so the sooner I have your submission the better. Authors: Thanks for your efforts. I appreciate it very much. Without you we would not have a Journal. 73 to all and happiest of holidays that are coming up, Ed Long WA4SWJ Editor, The AMSAT Journal

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'Into Space with Amateur Radio' competition
by Trevor 11 Nov '07

11 Nov '07

South African Radio Amateurs seem to have found a good way to get young people thinking about Space, see SARL story at http://www.southgatearc.org/news/november2007/into_space_essays.htm The essay's the students wrote are available at http://www.amateurradio.org.za/youth.htm 73 Trevor M5AKA ___________________________________________________________ Want ideas for reducing your carbon footprint? Visit Yahoo! For Good http://uk.promotions.yahoo.com/forgood/environment.html

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Re: PO-63
by G0MRF＠aol.com 11 Nov '07

11 Nov '07

I can see the problem Bob mentions with the solar illumination. I can't quite make out if there is just one side out of 6 with 32 cells or if it has 2 sides with solar panels. Certainly a lot of AA cells inside though! _http://www.youtube.com/watch?v=SJYBe3FmtAw_ (http://www.youtube.com/watch?v=SJYBe3FmtAw) _http://www.youtube.com/watch?v=plQ38oQmX4w_ (http://www.youtube.com/watch?v=plQ38oQmX4w) 73 David G0MRF

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Re: AO-16
by Mark L. Hammond 11 Nov '07

11 Nov '07

Mike's observations are in line with my own observations--telemetry from AO-16 appears to be quite random in its current status. It's going to take a while to get the software uploaded and then running (assuming it's healthy enough to do so), so hang in there. Once we get that done (a few weeks is a likely time frame, or maybe longer) we'll have it sending telemetry at regular intervals again. When you do get telemetry, please send it to the address posted yesterday. Thanks for listening! It's good to hear it HUMMMMmmm.... 73, Mark N8MH >Date: Sun, 11 Nov 2007 20:56:57 +0100 >From: "Mike Rupprecht" <mail(a)mike-rupprecht.de> >Subject: [amsat-bb] Re: AO-16 >To: "'Dave Aitch'" <dave(a)g1ocn.com>, <amsat-bb(a)amsat.org> >Message-ID: <011a01c8249d$04c4a240$0e4de6c0$@de> >Content-Type: text/plain; charset="iso-8859-1" > >I think no fixed time interval (heard frames between 1 and 3 minutes). > >73, Mike >DK3WN > >-----Urspr?ngliche Nachricht----- >Von: amsat-bb-bounces(a)amsat.org [mailto:[email protected]] Im >Auftrag von Dave Aitch >Gesendet: Sonntag, 11. November 2007 17:54 >An: amsat-bb(a)amsat.org >Betreff: [amsat-bb] AO-16 > >Listening to AO-16s wonderful modulated carrier as she flies by >in the hope of downloading some TLM for guys, but, there >doesnt seem to be many periods of TLM being sent. >I heard only two bursts at near LOS when it was over Greenland. > >What is the period of time between TLM transmissions ? > >73, Dave. Mark L. Hammond [N8MH]

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