[amsat-bb] Tracking

[Joe]

See below for answers,,,
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 12/21/2015 9:32 AM, Burns Fisher wrote:
> Joe,
>
> Part of the question is whether you actually DO have the clock set
> correctly on your computer.  Both the time and the time zone.  I can
> imagine a web-based program that works either from an external time source
> (i.e on the web server) or that gets the time from your browser.  I don't
> know web page does which, but you might as well be sure you have your
> computer clock right.
Well that I know is correct, according to WWV at least it is and via RF 
not a possible delay via a internet based time thing. I have WWV playing 
and watch the time change at the tone.. It is sooo close I doubt if it 
is even a tenth of a second off.
>
> The other things that cause variation is if the keplerian elements are up
> to date, and how fast the elements are changing (which generally relates to
> the stability of the orbit you are trying to track).  The AMSAT page should
> be pretty up to date.  If you can download from Celestrak, those will be up
> to date.  (AO-85 won't be there....get them from amsat.org).
Been there done that often,,, no differences...
>
> There are also several programs that work on iPhone (and probably others as
> well).  I use PocketSat3 on the iPhone.  It is always very close to what
> SatPC32 says on my PC, and that matches when I get signals from AO-85, so I
> guess they are right :-)  BTW, I'm not say SatPC32 is any better than
> Orbitron.  They both should be fine if given the right data.  I don't know
> about HRD, but I have no reason to believe it would be wrong, again if give
> the right data.
>
> So I guess the summary that I'd suggest making sure your PC time AND DATE
> is correct even if you are using a web-based program.  iPhones generally
> keep pretty good time, and phone-based programs also work well.
No I phones here, cell service here in the boonies is like dialup speeds 
if at all. more like a 1940's party line phone system he he he.

Joe WB9SBD
>
> 73,
>
> Burns, W2BFJ
>
> On Mon, Dec 21, 2015 at 9:51 AM, Joe <nss at mwt.net> wrote:
>
>> As in when is a bird gonna come by?
>>
>> I'm an old timer. Remember the "Oscarlocator?"
>> http://www.amsat.org/amsat-new/tools/images/oscarlocator.jpg
>> http://www.amsat.org/amsat-new/tools/images/oscarlocator.jpg
>> It never ever failed.
>>
>> I am seriously interested in getting active again on many of the birds.
>> But unless I fix a problem I am having I won't be I'll go back to EME Oscar
>> 1 or was that Oscar 0? And other weak signal modes.
>>
>> My problem is. pass predictions. Many of the different sources I try
>> display totally different pass times.
>>
>> Now I can understand with the two "Programs" I use, ( Orbitron & The
>> tracker in HRD ) if I don't have something set right the pass predictions
>> could be in error. My fault. weven tho I could set up both programs exactly
>> the same. I still get passes that are not the same. sometimes like 1/2 a
>> orbit off. other times even worse the passes are like 1 pass off in other
>> words one program says the pass is just ending, and the other says it is
>> just beginning. But again, this all could be operator error.
>>
>> BUT............
>>
>> And there always is a but isn't there.
>>
>> Web page based trackers, now those should work no matter where you are,
>> and what time your computer says it is true? I mean is a bird is directly
>> over say Chicago, shouldn't every web site show it being over Chicago
>> regardless or where you are or what time your computer says it is?
>> I look at like 4 different pages and they have the same bird in different
>> places. some again 1/2 an orbit wromng, some like 10 minutes different.
>>
>> What is someone to do!?
>>
>> Joe WB9SBD
>> EN43
>> --
>> Sig
>> The Original Rolling Ball Clock
>> Idle Tyme
>> Idle-Tyme.com
>> http://www.idle-tyme.com
>> _______________________________________________
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> _______________________________________________
> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions expressed
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> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
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>
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