AMSAT-BB February 2010

185 participants
267 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

NASA - 2011/2012 CubeSat Launch Opportunities

by Trevor .

See http://prod.nais.nasa.gov/cgi-bin/eps/synopsis.cgi?acqid=139845 73 Trevor M5AKA

12 years, 3 months

March 2010 AO-51 Schedule

by Angelo Glorioso

March 2010 AO-51 Schedule March 1 - March 10 FM Repeater, V/U Uplink: 145.920 Mhz FM Downlink: 435.300 Mhz FM March 11 - March 16 FM Repeater, V/U Uplink: 145.920 Mhz FM Downlink: 435.300 Mhz FM FM Repeater, V/U to support K4T EL84 DXpedition Uplink: 145.880 Mhz FM Downlink: 435.150 Mhz FM March 17 - March 21 FM Repeater, V/U Uplink: 145.920 Mhz FM Downlink: 435.300 Mhz FM March 22 - 28 FM Repeater, V/U Uplink: 145.920 Mhz FM Downlink: 435.300 Mhz FM FM Repeater, L/U (Subject to interruption for telemetry collection) Uplink: 1268.700 Mhz FM Downlink: 435.150 Mhz FM March 29 - April 4 FM Repeater, V/S Uplink: 145.880 Mhz FM Downlink: 2401.200 Mhz FM

12 years, 3 months

Transporting HT and Arrow Antenna on commercial flight

by Reid Crowe

Has anyone had luck with transporting an HT on a commercial flight in their carry on luggage recently? I doubt I'd have much luck with transporting an arrow antenna in my carry on. Any thoughts? 73 Reid N0RC

12 years, 3 months

RE March 2010 AO-51 Schedule

by Angelo Glorioso

Drew, No problem but I feel you are way overreacting to all of this. It was just a message about a schedule. Nothing more, nothing less. YOU AND AMSAT WANT CREDIT??? ATTENTION ALL AMSAT !!!! AMSAT SHOULD HAVE FULL CREDIT FOR THE AO-51 SCHEDULE I REPOSTED. PLEASE FORGIVE ME FOR OMITTING A LINE IN THE ORIGINAL SCHEDULE! :-( IF I OFFENDED ANY NEW UP AND COMING USER OF THE BIRDS, PLEASE FORGIVE ME. :-( I WILL NEVER REPOST A MESSAGE OR BULLETIN AGAIN WITHOUT FULL CREDIT AND I WILL NOT OMIT ANY LINES GOING FORWARD. I GUESS I DON'T HAVE COMMON SENSE LIKE DREW!!! ----- Original Message ----- From: Andrew Glasbrenner To: Angelo Glorioso ; Amsat-BB Sent: Sunday, February 28, 2010 12:54 PM Subject: Re: [amsat-bb] March 2010 AO-51 Schedule Angelo Glorioso wrote: I did not realize a line being omitted referenced new users were not welcomed!!!!!!! DID I MISS SOMETHING????? Yes. I'd prefer you not edit the AO-51 schedule and distribute it to the -bb before the command team, that's all. If you quote someone else's work or news item, quote it in it's original form, and credit the source. Seems pretty common sense to me. 73, Drew KO4MA

12 years, 3 months

AO-51 repeater is on

by Andrew Glasbrenner

We got all the files we needed downloaded this last pass, and since Jim is still out and about, I turned the repeater on along with the digital downlink. Sorry for the crossed wires, but it is now on, and will stay on throughout the close approach tomorrow. 73, Drew KO4MA

12 years, 3 months

AO-51 close approach

by Andrew Glasbrenner

I just received a message from the US Joint Space Operations Center warning that AO-51 will have a close approach to another satellite, FORMOSAT 3-D, tomorrow morning at 1056 UTC. This just happens to be over the Eastern US. Predicted miss distance is 953 meters, which is over 3000 feet. Here are the latest elements sets for both satellites: AMSAT ECHO 1 28375U 04025K 10058.90048627 .00000037 00000-0 23393-4 0 6144 2 28375 098.0572 058.6452 0085064 068.7648 292.2602 14.40671174297770 FORMOSAT 3D 1 29050U 06011D 10059.05265027 .00001102 00000-0 26646-3 0 4565 2 29050 072.0087 081.1265 0054240 301.1173 058.4581 14.54154136208438 On this afternoon's pass I will shut off the S band transmitter and turn on the digital downlink at 2 watts, with telemetry transmitted every 5 seconds. If everything goes ok and we are still in one piece, we'll get the repeater back on by tomorrow night. Telemetry collected tomorrow morning during the approach is welcome to ko4ma(a)amsat.org. Let's not panic, 953 meters is a long way apart, but it's worth paying close attention during the approach. Good Luck AO-51. 73, Drew KO4MA AMSAT-NA VP Operations

12 years, 3 months

Re: Transporting HT and Arrow Antenna on commercial flight

by andy thomas

I have never had any problems taking my Arrow in my checked-in luggage to Russia, the EU or Belarus. see http://www.andythomas.eu But Russia, Ukraine and Belarus require a customs declaration about "high frequency radios" so I have always used local hams' radios for the fm satellites in these countries. Within the EU I take the handheld with me in carry-on luggage with a full battery to be able to switch it on, and at check in tell the airline I'm happy to show it to the pilot (or anyone else!!). I separate the battery from the HT for the xray and offer to connect and switch on if asked. I carry a full licence with me and I have a photocopy licence in my checked-in luggage, the first thing you would see when it's opened, and the luggage is unlocked. 73 de andy g0sfj

12 years, 3 months

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AMSAT-BB February 2010