January 2008 - AMSAT-BB - mailman.amsat.org

Re: [aprssig] Re: OLPC positions and MESH-ing
by Robert Bruninga 07 Jan '08

07 Jan '08

>> How much future is there in this?... the window >> for "civilians" in the US to buy these machines >> domestically has closed. My hope was that that window was just a marketing window for that particular deal. As production ramps up, a new deal will be forthcoming? > On top of that, Intel just pulled their funding > and technical support from the project... My understanding was that was "good riddance" on the part of the OLPC team. INTEL only wanted to maximize profit and performance. Could care less about the original objective of optimum educational objective in a villiage environment. > How many hams have them now and more importantly, > will there be any more in the future? Good question, and that was why I suggested building a database of hams with them, including position so we can see the big picture... >> I would like to build a map of all HAMS with >> OLPC's to help us... possibly MESH together.. >> The map will include both your home and work >> locations... where you might have your OLPC >> >> Just email me your CALL, and LAT/LONGs for >> both of your locations.... >> >> WB4APR:3909.12N/07629.34Wl Home, with access to 3 OLPC's >> >> The LAT/LONG is in DEG and decimal minutes. >> The two spaces after the decimal points are >> for hundredths of minutes. If you replace >> them with two spaces, then your position can >> remain ambiguous to the nearest mile, if you like. >> >> The "l" (lower case L) after the W is the >> laptop symbol. Everything after that is >> free text to describe your OLPC. >> >> Those that are into APRS can go ahead and just >> change your normal APRS station to the LAPTOP >> symbol for the next week or so, and I can >> capture your posit that way electronically. >> >> >> Thanks! >> Bob, WB4APR

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Re: Digital Recorder
by clintbrad4d＠earthlink.net 07 Jan '08

07 Jan '08

How about just using the recorder's internal mic while recording in your shirt pocket?

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New items at the AMSAT online store
by Bruce 07 Jan '08

07 Jan '08

This has to be one of the best items we have carried. Something that all of us can use. A 2GB USB Flash Drive, Aluminum finish with the AMSAT logo. Only $30 + S&H add neck rope/lanyard for $1 Also, I have updated the LVB Tracker board only to include a picture of the board. Visit the AMSAT online store at http://www.amsat.org 73...bruce AMSAT Online Store Manager -- Bruce Paige, KK5DO AMSAT Director Contests and Awards ARRL Awards Manager (WAS, 5BWAS, VUCC), VE Houston AMSAT Net - Wed 0200z on W0KIE new satellite soon. Also streaming MP3 at http://www.amsatnet.com Latest satellite news on the ARRL Audio News http://www.arrl.org

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Receiver sensitivity
by Jeff Mock 07 Jan '08

07 Jan '08

I have an Icom R8500. I've had this receiver quite a long time and I really like it. For me it's more like a piece of test equipment than a radio. I've been using it to listen to satellites with so-so results. With high overhead passes I get good results, but not so good lower than say 30-degree elevation with an Arrow-II antenna. Maybe I'm getting some desensing by being in a big city, any number of things. My question is about sensitivity of the receiver. I'm looking at the specs, and it quotes 0.5 uV for FM at 70cm. This is quite a bit worse than other 70cm radios and HTs that quote 0.17 uV sensitivity. Is this difference for real? Does it make a big difference? It looks like even the big expensive receivers like the R9500 have the same 0.5 uV sensitivity as the R8500. thanks, jeff

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Spectrum Analyzer
by gi pi 06 Jan '08

06 Jan '08

Hello everybody , i'm serching (desperately... ) service manual for Spectrum Analyzer SYSTRON DONNER Tuning Unit Model 809-1 I've some trouble but without electrical sketch or Service Man i can't resolve the problem.. Any informations are welcome! 73 from Giulio IZ4FVW Amsat-NA Member 36417 ___________________________________ L'email della prossima generazione? Puoi averla con la nuova Yahoo! Mail: http://it.docs.yahoo.com/nowyoucan.html

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educational inquiry re: astrophysics
by Scott Townley 06 Jan '08

06 Jan '08

My oldest daughter has expressed an interest in majoring in astrophysics...and it occurred to me that perhaps there are some on the list either actively or peripherally involved in this field who might be able to provide some insight on, well, what exactly that is, career-wise. So if anyone on the list would be willing to provide some input to an aspiring astrophysicist (off-list) that would be most appreciated. Scott Townley NX7U Gilbert, AZ DM43di mailto:[email protected] http://members.cox.net/nx7u

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Digital Recorder
by Chris Bloy 06 Jan '08

06 Jan '08

Hi All, I have a small problem when recording my satellite passes, I don’t have the hands to be able to write the Grids and Callsign’s so i use a little digital voice recorder that I found on Ebay.. Now, the problem I have is this.. I use my TH-D7 and split the output between the recorder and my earphones.. BUT the output to the recorder is a little too hot for it and doesn’t have a mic control.. So my options :- Do i, Find a way to turn the volume down on the recorder output, i have tried working the sat with low low volume, but then i cannot hear the downlink very well. Or, can anyone suggest a digital voice recorded that has a mic volume control? I was thinking of perhaps a variable capacitor in-line would attenuate the volume, but there has to be a recorder that has mic controls? This is for portable work, so a laptop is out of the question! Thanks, Chris No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.17.13/1210 - Release Date: 05/01/2008 11:46

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Re: AG-35 info
by Joe Leikhim 06 Jan '08

06 Jan '08

Yes it does Message: 7 Date: Sun, 6 Jan 2008 18:59:46 +1000 From: "Andrew Rich" <vk4tec(a)people.net.au> Subject: [amsat-bb] AG-35 info To: "Amsat-Bb@Amsat. Org" <amsat-bb(a)amsat.org> Message-ID: <LGEKIKIAKJPNFGILGJBBCEHEECAA.vk4tec(a)people.net.au> Content-Type: text/plain; charset="iso-8859-1" Does anyone have any detailed info on a AG-35 ? When you de-power the preamp, does it goto bypass ? ---------------------------------------------------------------------------- Andrew Rich VK4TEC vk4tec(a)people.net.au http://www.tech-software.net -- Joe Leikhim K4SAT "The RFI-EMI-GUY"© "Treason doth never prosper: what's the reason? For if it prosper, none dare call it treason." "Follow The Money" ;-P

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Delphi-C3 launch info?
by Mark L. Hammond 06 Jan '08

06 Jan '08

Hello all, Does anyone on the list have any up to date info on the launch of Delphi-C3? The most recent news was a few weeks ago, and it said the window was 7 Jan to 10 Jan. http://www.delfic3.nl Thanks, Mark L. Hammond [N8MH]

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AG-35 info
by Andrew Rich 06 Jan '08

06 Jan '08

Does anyone have any detailed info on a AG-35 ? When you de-power the preamp, does it goto bypass ? ---------------------------------------------------------------------------- Andrew Rich VK4TEC vk4tec(a)people.net.au http://www.tech-software.net

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