September 2011 - AMSAT-BB - mailman.amsat.org

Old Oscar Sub Band 144.300-144.500
by ka9qjg 01 Oct '11

01 Oct '11

Hello hope Everyone is doing Well I "am not sure this Post went out or not If Someone has a Answer if You like Just E-Mail Me Direct at KA9QJG(a)WOWWAY.COM THANKS IN Advance 73 De Don KA9QJG Hello From Don KA9QJG , Hope Everyone is doing Well I have Heard and Read and ask a lot of Questions about Hams using the Oscar Sub Band 144.3-144.5 and as You can guess I Got a lot of Opinions From the ARRL, FCC And others, So I thought the Best thing to go was to actually get the Answers from You the users. Yes I know that and as a Responsible Ham I think We all should use the Guidelines , But in this Case From what I have found the Oscar Sats have not been on the Air since in Many Years , and NO Other Sats or ISS Is using the Freqs or set aside for them , So a Lot of Hams in the US are using the Freqs for FM/ SSB CW DIGTAL And Look the Well Established APRS 144.39 And long time and still used 144.34 FM for Conducting ATV And I have seen on the Internet Some States actually adding the 144.300-144.5 As Simplex FM The Problem is I have Heard People Jamming and Arguments about this over the Air , I have even seen on the Internet when doing searches for Info Some States even include this NON Used 144.300 TO 144.500 For FM Simplex Etc.. Because NO Oscar Sats Exist or Nothing else to Interfere with But I agree 100Percent if there Was the Freqs should NOT Be used for anything other then what it was intended for Thanks 73 De Don KA9QJG PS as You know We have a lot of older Hams kind of set in their ways and the New ones Are Listening and looking for ways to Fit in, and We need as Many New Responsible Hams in this Hobby as We can get But How Could We get on these Freqs Some are using and Say Hey We are not allowed here Because of the Oscar Sub Band Something that has been Gone for over 20 Yrs

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calculation of eclipse
by normn3ykf＠stny.rr.com 01 Oct '11

01 Oct '11

Hi all!! How does one calculate the period and time of entry and exit of eclipse? I'm going to be helping a friend do an Arissat presentation for her class. Due to the fact of the battery failing, this gives a 15 minute hold before the power management allows transmission. So, for any chance of receiving the bird, it has to be in sunlight for 15 minutes (or so). I'd prefer a mathematical formula. Echo goes through some of the same trials. Thanks, Norm BTW: I am an engineering student, just throw the math my way.

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FO-29 off
by DeYoung James 30 Sep '11

30 Sep '11

Greetings, I just got back on the air from my new QTH (FM07uv) and monitored the beacon with good signals on Sep. 29 from 20:51 to 21:02 UTC. I heard no transponder activity and no beacon signal on the near zenith pass here on Sep. 30. from 19:51 to 20:05. Jim, N8OQ

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2011 Symposium
by Martha 30 Sep '11

30 Sep '11

People - *Time is running out to make hotel reservations for the 2011 AMSAT Space Symposium and Annual Meeting. * The cut off date is *October 10th* (I am trying to change that). Please don't wait! The hotel is the Wyndham San Jose and the phone number is 408-453-6200. The reservation block is under the name* AMSAT . * -- 73- Martha

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FO-29 problems ?
by Ib Christoffersen 30 Sep '11

30 Sep '11

Hi all, I just tried to listen to FO-29. It was a pass with AOS here in Copenhagen at 1057 UTC. Nothing heard ! Reports on the report page indicate the same. See: http://oscar.dcarr.org/ Any news from Japan ? 73 OZ1MY Ib

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Yet ANOTHER Satellite's Re-entry
by Clint Bradford 30 Sep '11

30 Sep '11

The defunct German Roentgen Satellite (ROSAT) is coming back to planet Earth - sometime in late October or early November. The X-ray space observatory is less than half the weight (2.4-tons) of the fallen UARS, but has an orbit that ranges from latitudes of 53 degrees north and south, putting it in a position where it can threaten a wide region that stretches from Canada to South America. And while much of the spacecraft will disintegrate during it’s rapid descent, German Aerospace Agency officials predict that as many as 30 large chunks of debris — a combined mass of 1.6 tons — is expected to survive re-entry. http://science.nasa.gov/missions/rosat/ Clint Bradford, K6LCS

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AMSAT-UK Member survey.
by Rob Styles 30 Sep '11

30 Sep '11

We invite you as members of AMSAT-UK to our online Survey,We always strive to improve your membership, and we would like your views and comments. Please take a few minutes to complete our online survey at http://amsat-uk.limeask.com/ Rob M0TFO AMSAT-UK

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Re: calculation of eclipse
by normn3ykf＠stny.rr.com 30 Sep '11

30 Sep '11

Ken, Thanks for the pointers to texts. Meeus's tome has good reviews. I may try to find an older copy of his book that deals with programming calculators. Simpler for me to program. This sounds like a fun project. Seems to me once the heavy lifting is done (algorithm), calculation of eclipse times could be automated. I have a feeling that I'll eat those words. Norm

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Engineering and Philosophy
by Trevor . 30 Sep '11

30 Sep '11

A promotional video with a Cubesat towards the end Nick Ridley '11: Exploring the Intersection of Engineering and Philosophy http://www.youtube.com/watch?v=anEHxQrpans 73 Trevor M5AKA

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Re: HB9DRV
by Gordon JC Pearce 29 Sep '11

29 Sep '11

On Tue, 27 Sep 2011 14:17:53 -0500 "Greg Beat" <gregory.beat(a)comcast.net> wrote: > "The support effort required has become more than I can realistically manage > - with many thousands of users, new radios and other hardware appearing all > the time and unexpected changes to the infrastructure used by HRD such as > QRZ.com I no longer have any time at all for other projects. Why not just open-source it? It's already free-as-in-beer. If it was also free-as-in-speech then there would be a potentially far greater number of eyes on the code, and a broader range of contributors. There's also the chance to use existing work like hamlib in it, and avoid duplication of effort on driving all these different radios. I've never understood why so many in the amateur radio community are so keen to share circuit diagrams, antenna designs and all sorts of other information, but keep their software to themselves. In this case, it's a no-brainer - HRD needs a lot of work, and there is a willing community out there who would do it given the chance. Proprietary software has absolutely no place in amateur radio. -- Gordon JC Pearce MM0YEQ <gordonjcp(a)gjcp.net>

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