AMSAT-BB October 2009

223 participants
382 discussions

Call for Papers--2007 ARRL/TAPR Digital Communications Conference

by Ford, Steve, WB8IMY

Technical papers are solicited for presentation at the 26th Annual ARRL and TAPR Digital Communications Conference to be held September 28-30, 2007 in Hartford, Connecticut. These papers will also be published in the Conference Proceedings (you do NOT need to attend the conference to have your paper included in the Proceedings). The submission deadline is July 31, 2007. Please send papers to: Maty Weinberg ARRL 225 Main St Newington, CT 06111 or you can make your submission via e-mail to: maty(a)arrl.org Papers will be published exactly as submitted and authors will retain all rights. 73 . . . Steve, WB8IMY ARRL

9 years, 11 months

Re: EggBeater

by Bill Dzurilla

Steve, I have both a commercial and a homebrew Eggbeater and am disappointed with both, especially in light of its rather high price. Connected to my IC-7000 via an ARR mast-mounted preamp, performance is far less than with an HT and an Arrow. Guess an omni can't cut it, at least not from my QTH. Maybe if I could get it up higher, clear of all roofs, it would do better. I can make contacts at relatively high sat elevations, but can do just as well with a $10 dual band ground plane. My friend has an Eggbeater and the same preamp at a clearer QTH, and he hears substantially better, down to 10 degrees elevation in some directions. Good luck and 73, Bill NZ5N > > Hi Steve, > > > > It is surprising to read that you are not hearing > anything. I have > > repeatedly used a 2m and 70cm Eggbeater for the sats > and have had no > > problem hearing things. No pre-amp. > > > > I was using a short cable (e.g. less than 10 meters). > The rigs I > > used were a FT-736r (deaf) and a FT-847 (so-so). > > > > 73, > > > > Dave

10 years

FW: Re: The Moon is our Future

by Dave

We have met the enemy and they are us. WE need to do something. Yes, $15m is outta reach, but isn't there a cash prize for the first on-commercial moon landing? Dave DM78qd // KA0SWT If it weren't for Philo T. Farnsworth, inventor of television, we'd still be eating frozen radio dinners.-- Johnny Carson +++++++++++++++++++++++++++++++++++++ -----Original Message----- From: amsat-bb-bounces(a)amsat.org [mailto:[email protected]] On Behalf Of Jeff Davis Sent: Thursday, July 02, 2009 9:35 AM To: amsat-bb(a)amsat.org Subject: [amsat-bb] Re: The Moon is our Future On Thu, Jul 02, 2009 at 06:48:51AM -0600, Jack K. wrote: > communications anyway) and move forward... We can put up all the leos > we want, but until someone makes something like B. Bruninga's cell > concept work, we are only going to have more of the same, We don't > need more of the same! I couldn't agree more - we don't need more of the same. If I want to sit back and have a two hour rag-chew with someone on the other side of the planet I will use Skype or my cell phone! Dreaming about what *might* be in space is a fun exercise. Actually doing something about it requires sending things to LEO because reality has dictated that's as far as we can afford to go. How's about we use some of that frustrated *imagineering* to come up with interesting new concepts at LEO? We don't need any more FM repeaters buzzing overhead, but what about more cameras downloading HD images, scientific payloads that monitor the ongoing climate change, payloads to study the Earth's magnetic field, etc. etc. Our own 'Twitter' messaging network from space...? The Apollo 13 creed of "failure is not an option" has completely infected the brains at AMSAT and this list. You want something at HEO or on the moon, cut a check for $15 million dollars and let's get on with it. Been waiting since 1996 for another AO-13 and I am getting too old to keep waiting. AMSAT is becoming completely irrelevant as it strives without success for the impossible mission and exhibits a shocking amount of leadership malfesance as it stubbornly refuses to recognize and adapt to realities in the launch business. I know, I know maybe NEXT year someone rich will die and leave us a boatload of cash. Or the bankrupt US government will suddenly cough up a billion dollars for some orbiting emergency communication system. In the meantime we have to stifle the truth because it might blow yet another *secret* deal that's in the works and *almost* a done deal, so let's not complain publicly and ruin it. Heard the stories, heard the lies, got all the t-shirts and ball caps. Whatever. -- Jeff, KE9V AMSAT-NA member since 1994, Skeptic that we will ever go back to HEO since 2002 _______________________________________________ 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

11 years, 3 months

Re: New AO-51 Whole Orbit Data decoder released by DK3WN

by Mark L. Hammond

Hi Luc, TLMEcho is the program for LIVE decoding of AO-51 telemetry packets during a pass. Some telemetry channels are sent via 9600 baud packet at a regular interval, usually 10 seconds, and TLMEcho can decode these (using a 9600 baud modem) LIVE as they are coming down. The new WOD decoder is different--it is used to decode satellite telemetry data collected (more channels usually) and stored on the satellite during a whole orbit (usually set for 24 hours). Once the WOD file is finished, it appears on the PBBS and can be downloaded via WISP. The downloaded WOD file can then be decoded by DK3WN's new program after it has been downloaded from the satellite as a big file (about 180k). I hope that helps clear things up :) 73, Mark N8MH __________________ Message: 7 Date: Thu, 22 Oct 2009 12:56:50 -0400 From: Luc Leblanc <lucleblanc6(a)videotron.ca> Subject: [amsat-bb] Re: New AO-51 Whole Orbit Data decoder released by DK3WN To: amsat-bb(a)amsat.org Message-ID: <4AE05692.19949.5C3023B(a)lucleblanc6.videotron.ca> Content-Type: text/plain; charset=ISO-8859-1 On 22 Oct 2009 at 11:39, Mark L. Hammond wrote: Date sent: Thu, 22 Oct 2009 11:39:08 -0400 From: "Mark L. Hammond" <marklhammond(a)gmail.com> Subject: [amsat-bb] New AO-51 Whole Orbit Data decoder released by DK3WN To: amsat-bb(a)amsat.org > Thanks to our resident telemery guru Mike Rupprecht DK3WN a new AO-51 > whole orbit data (WOD) telemetry decoder has been released! ?The file > with decoder and coefficients file can be downloaded from here: > > http://www.dk3wn.info/files/ao51wod.zip > > The AO-51 telemetry archive is on the AMSAT FTP server. ?DK3WN's new > decoder is for processing "raw" WOD telemetry files. ?For example, the > WOD data collected for October 2009 is here: > > ftp://ftp.amsat.org/pub/amsat/telemetry/ao51/2009WOD/Oct2009/raw1009/ > > > The decoder generates a .CSV (comma separated) file that can be opened > in Excel, etc. ?A nice feature is that the telemetry program acutally > graphs the data, too! > > THANKS, Mike DK3WN! > > 73, > > -- > Mark L. Hammond [N8MH] > > _______________________________________________ > 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 > Hi Mark Is it a new program or a new update for "tlmecho"? I guess it's a new one but just to be safe. Thank's Thank's "-" Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe DSTAR urcall VE2DWE WAC BASIC CW PHONE SATELLITE -- Mark L. Hammond [N8MH]

12 years, 7 months

LVB Tracker kit

by Jean-François Ménard

Hi, I probably missed something.... but on AMSAT website, we are able to buy the LVB Tracker completely assembled, the bare board without any part or only the enclosure........ What about a complete LVB Tracker.... but as a kit ?? I don't want to save money, I just like to build, when possible, my hardware. Is there a place to purchase a complete LVB Tracker (parts and enclosure) as a kit instead of completly built ?? Thank for your help. 73 -- Jean-François Ménard VA2SS =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= AMSAT www.amsat.org / Member #37102 ARRL www.arrl.org =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

12 years, 7 months

Searching AMSAT-bb archives

by Dave Taylor

Hi, Just thought I'd remind everyone that all AMSAT mailing lists are archived and past messages are available for search in two ways: 1. Use the Subscription settings link at the end of each message to go to a web page that has a link to the archives for that mailing list. 2. Search using Google, with the search string <search keywords> site:amsat.org/pipermail/<list name> The <list name> part is what appears at the start of a mailing list subject line; for example, "amsat-bb". If you leave off the "/<list name>" part, you will search all public AMSAT mailing lists. (Other search engines can probably do something similar.) Dave, W8AAS AMSAT #8974

12 years, 7 months

Re: GO-32 Status ?

by Gkcarr

I made 2 contacts (one ssb, one CW) during pass 24,269 on 30/10. 73 George WA5KBH -----Original message----- From: "Mark L. Hammond" marklhammond(a)gmail.com Date: Sat, 31 Oct 2009 12:42:20 -0500 To: amsat-bb(a)amsat.org Subject: [Spam] [amsat-bb] Re: GO-32 Status ? > Hi Bruce, > > I printed packets from GO-32 on 23:59 UTC 29 Oct 2009, but haven't listened for it since then. > > Have you been listening to it the last few weeks? > > Perhaps it is down again? > > 73, > > Mark N8MH > > ___________ > > > > GO-32 Status ? > > -------------------------------------------------------------------------------- > > Subject: [amsat-bb] GO-32 Status ? > From: Bruce Semple <[email protected]> > Date: Sat, 31 Oct 2009 07:56:06 -0400 > > -------------------------------------------------------------------------------- > > Is GO-32 officially listed as gone? > I did not hear the boot loader / beacon on this mornings pass over NA > / East coast > > > Mark L. Hammond [N8MH] > > _______________________________________________ > 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

12 years, 7 months

ITUpSAT1

by Andrew Rich

Does anyone have any info on the 19k2 payload ? Andrew VK4TEC I have been playing with some 19k2 http://tech-software.net/tracker%200501.JPG

12 years, 7 months

Re: Simple 2.4Ghz helix plans

by WILLIAMS MICHAEL

I have built several 13 cm antennas from the site of G6LVB and WK4R all using PVC. It doesn' get any simpler than WK4R's design. 1 inch sch. 40 PVC and some #14 house wiring. Check out this site. http://wk4r.com/ If you need some tips, email me. I'll be glad to help. Here are some other good websites for 2.4GHz helix antennas. 2. http://ve2zaz.net/ Select 2.4 GHz helix. 3. www.g6lvb.com/ Select quadruple helix for AO-40. 4. www.qsl.net/ve3cvg/antennas/2400/ 73, Mike K9QHO

12 years, 7 months

Simple 2.4Ghz helix plans?

by Michael Tondee

I threw this out there on the eham satellite forum looking for answers but I'll try here too. I'm looking for some fairly simple plans for this antenna. Everything I find either seems to be intended for WiFi or if it is ham related is full of mathematical formulas to figure length, diameter, spacing etc. Math was never my strong suit so I'd prefer to find something with the actual already computed dimensions clearly stated. Preferably in English rather than metric measurements. I found an article in the May/June 2008 AMSAT Journal that looked promising but there are no hard numbers, just the formulas and I don't have a calculator capable of some of the computations, much less being able to work them out in my head. Been a long time since I was in school!.. hi hi... I have a downconverter I'm not sure even works and I don't want to spend a huge amount of time and trouble to be able to test it. Tnx and 73, Michael, W4HIJ

12 years, 7 months

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AMSAT-BB October 2009