March 2014 - AMSAT-BB - mailman.amsat.org

K&R Yoksh
by K&R Yoksh 26 Mar '14

26 Mar '14

http://alltrendskindlestore.com/gtxz/news_fx.php K&R Yoksh

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test msg
by Dale Hershberger 25 Mar '14

25 Mar '14

test.

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Re: Malaysian airliner puzzle
by Howie DeFelice 25 Mar '14

25 Mar '14

INMARSAT has several services for airliners. The Aero-H and Aero-H+ services both accomodate ACARS and other voicec and data services for airline operation. Aero-H service operates on the INMARSAT I-3 constellation that has global and regional beams. Aero-H+ can operate on either I-3 or I-4 satellites. The I-4 satellites have a global beam as well as multiple small overlapping spot beams, similar to a cellular network. INMARSAT can dynamically assign bandwidth (spectrum) to spotbeams as required, allowing a very high level of frequency re-use. The spotbeams are not steered on the satellite. The system also uses a form of uplink power control. The mobile terminal sets initial transmit power based on elevation angle to the satellite. The network control system keeps track of all terminals logged into the network. The power setting, and therefore approximate elevation angle, are reported back to INMARSAT NCS. If there were two transmissions at large enough differences in reported elevation an approximate bearing and speed could be calculated. That would at least focus the search to a single wide line. However, looking at the arc on the map and assuming it is accurate, this looks to be too big to be in an I-4 spotbeam which means they may be operating on the I-3 constellation which doesn't require as much information as the I-4 does. I'm not as familiar with the H and H+ services as I am with the BGAN service so I don't know the details of how an H or H+ terminal behaves on the two different satellite versions. I truly hope they have more information than is being released. Howie, AB2S

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SO-50 Over Europe
by Peter Wilson 25 Mar '14

25 Mar '14

To all in Europe..... We have just had an overhead pass of SO-50 and yet again, not one successful QSO. I heard many stations trying to access the bird but not one station managed a two way contact. Can any experienced European operator explain to me what is happening. I thought the FM birds were supposed to be the easy ones? Peter G8KEK

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satpc32 serial port setup?
by Lizeth Norman 25 Mar '14

25 Mar '14

Hi all! Which version of GS-232 does satpc32 support? There are two flavours, a and b. The web software web page suggests GS-232, unhelpfully. Thanks, Norm n3ykf

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GEO-SAT
by Myrton 24 Mar '14

24 Mar '14

Greetings from Rhode Island. My name is Myrton. My call sign N1GKE. I am spearheading the Broadband Hamnet -RI- with operators from all across the spectrum. We are still in the building stages. The will be a Symposium at the Knight Campus of CCRI. Knight Campus is easily accessed from Route 95 North or South. Symposium start time 10 AM. The date is April 27 th, the last Sunday of April. We can accomadate upwards of 100 people. I for one have already begun with the help of Russ (KB1SYA) to assemble a station from spare parts in the 2.4 Ghz range. I will have at least one dedicated station for this GEO-SAT with plans for NTS, EMCOMM or any other Amateur Radio Service that may be needed to serve the North East United States. The Symposium is open to all, that means everyone, Amateur Radio Operators, Satellite Enthusiasts and anyone interested. There are plans for at least two more Symposiums in the NE over the summer. Please, if you are going to attend, send an email to: N1GKE (AT) (COX) (DOT) (NET) In the subject please put Broadband Hamnet -RI-, so the mail goes to the proper folder and gets printed and sent to the proper file box. Thank you for detail. "I use the original form of social networking, /Amateur Radio." /

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Conflicting Predictions.
by Joe 24 Mar '14

24 Mar '14

I was very active in the 70's and 80's on the Birds. And now am attempting to try to help some new folk get into them. A local Newbie has been trying AO-51 with no luck, So I volunteered to see what he is doing and where he needs help. BUT........ And there always seems to be a "BUT" isnt there? I am getting HUGE discreptencies on Pass times. My location is at, Latitude: *43.61°* Longitude: *-90.08°* Local time zone: GMT -5 And every source I have tried does not give the same time for my next available Pass. Orbitron, Amsat web page, http://www.n2yo.com/passes/?s=28375 And Heavens Above. All three aren't even close to each other. My location is dead on with all of them. So I am confused as to why each source is sooo different from the other. \ Anyone? Joe WB9SBD -- Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com

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Wanted VHF bandpass cavity filter.
by Lizeth Norman 24 Mar '14

24 Mar '14

Title sez it all. Left my other one in Peru for future dx expeditions.

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TEXT TO SPEECH N5ZNL
by Nick Pugh K5QXJ 24 Mar '14

24 Mar '14

Demo of the text to speech by k5znl <http://youtu.be/bZN3mEhHVn0> http://youtu.be/bZN3mEhHVn0 Thanks nick Office 337 593 8700 Cell 337 258 2527 Helping UL become a world Class Engineering and Educational School

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