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[aprssig] ISS/ PCSAT joint operations announcement

scott at opentrac.org scott at opentrac.org
Tue Feb 1 04:29:33 UTC 2005

I think I've had a copy around since v3.  I'm running 5 right now.  The free
core program, even without any add-ons, blows away any other satellite
prediction software out there.  I don't know of any other free program
that'd let you show, for example, access times between two ground stations,
via two satellites, and only when one of them is in full sunlight.

For those that don't have it... you can order a free CD of version 6.1 here:

I did my TLE update online, worked fine even through a proxy server.  Earl,
is yours close to what my report showed now, or are they still significantly


-----Original Message-----
From: aprssig-bounces at lists.tapr.org
[mailto:aprssig-bounces at lists.tapr.org]On Behalf Of Gerry Creager N5JXS
Sent: Monday, January 31, 2005 8:17 PM
To: TAPR APRS Mailing List
Subject: Re: [aprssig] ISS/ PCSAT joint operations announcement

Been running STK since v0.9 as a beta...Guess I'll have to start keeping
current again to keep up with you 2.


Earl Needham wrote:
> At 08:48 PM 1/31/2005, scott at opentrac.org wrote:
>> Hey, someone else has STK, too!  =]  Your access times don't seem to
>> match
>> up with mine, though - I'll have to check my scenario setup.  I think
>> I've
>> got the current ephemerides.
>         It's all in the TLE's (TCE's in STK).  I hadn't updated mine in
> several weeks.  For some reason I can't get the online update to work,
> so I have to do it manually.  But after updating just now, mine still
> don't line up with yours, maybe about 10 minutes difference here and
>>   I didn't set up any other constraints or
>> anything, just ran an access opportunity report for ISS vs. PCSAT.
>> Maybe I
>> got the wrong object for ISS - it had a different name, but I think it
>> was
>> the same NORAD ID.  I'll check it out tomorrow and see if I can
>> constrain it
>> to times when PCSAT is in sun.
>         Hey, now that's a good idea!  I bet Bob will like that!  <G>
>         7 3
>         Earl
> Earl Needham, KD5XB, Clovis, New Mexico DM84jk
> http://kd5xb-2.no-ip.info
> _______________________________________________
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Gerry Creager -- gerry.creager at tamu.edu
Texas Mesonet -- AATLT, Texas A&M University
Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.847.8578
Page: 979.228.0173
Office: 903A Eller Bldg, TAMU, College Station, TX 77843

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