I'll be presenting to a scout group tonight. The only satellite pass available during my time slot is SO-50 at 19:04 ET (00:04 UTC) for 11 minutes. Its only 10 deg. off horizon, but I'm going to try. I'd appreciate anyone who can to listen out for my calls.
Thanks,
Dave, AA4KN
Satpc32 from AMSAT, has excellent after purchase support, AMSAT gets all the money (rocket science ain't) cheap, the learning curve is easy, runs my LVB tracker perfectly. The only problem I have is entering new keps that aren't already in the downloadable database.
73 Bob W7LRD
Seattle
----- Original Message -----
From: "Michael" <mikef1234(a)buckeye-express.com>
To: AMSAT-BB(a)amsat.org
Sent: Tuesday, November 30, 2010 5:36:29 AM
Subject: [amsat-bb] Tracking Software
I was wondering if someone could give me the pros and cons of the tracking software. I have orbitron, the one from amsat ( can't think of the name ) then I see ARRL has a software. What are the pro's and cons on these three and are there more ?
Mike N8GBU
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The O/OREOS TLEs consistently do not have valid checksums (last digit of
each line). I submitted a comment about this on their website but I have
not heard back. The correct checksums are 2 & 3, and not the 6 & 5 that
is listed.
If, by the time you read this, the posted TLEs are not 6 & 5, then the
TLEs have been updated and you'll have to generate new checksums. The
formula is a sum of all numerical characters on the line, including the
line number, treating minus signs as a one and everything else (letters,
+, spaces) as a 0. Then take modulus 10 of the sum (i.e. last digit of
the sum). Look it up on wikipedia for more details.
I've made a spreadsheet to fix this, but it is still a manual operation
for me (got to write a script at some point). Some programs disregard
the the checksum, which is why HRD & the website still work and your
tracking tool doesn't. Predict/GPredict, my tools of choice, require
valid checksums, making proper TLEs a pet peeve of mine. I don't know
what NOVA's up to.
In terms of "swarm spread" (i.e. how small delta-V between spacecraft
that shared the same ride, which in this case is just done by compressed
springs, translates into spatial differences), 35 minutes of separation
is pretty high for just 10 days after launch. With all the latest TLEs
from the three websites, I show O/OREOS being 3.5 minutes ahead of RAX,
and RAX being a 1.33 minutes ahead of FAST1/2.
Ryan, KB1LKI
On 11/30/10 4:54 AM, amsat-bb-request(a)amsat.org wrote:
> ------------------------------
>
> Message: 4
> Date: Mon, 29 Nov 2010 22:55:16 +0100
> From: PA3GUO<pa3guo(a)upcmail.nl>
> Subject: [amsat-bb] O/OREOS TLE errors ?
> To:[email protected]
> Message-ID:<19767175.1291067716437.JavaMail.root(a)viefep21.chello.at>
> Content-Type: text/plain; charset=utf-8
>
> Dear all,
>
> I keep on having troubles with the O/OREOS kepler sets.
> RAX and the others are fine.
>
> With todays version (as from the O/OREOS dashboard on the web)
> - NOVA gives O/OREOS just a bit behind RAX
> - HamRadioDeluxe give O/OREOS 35 minutes behind RAX
> - The O/OREOS web (dashboard graphic) shows O/OREOS 35 minutes behind RAX
> - My private antenna tracking tool does not recognize the keplerset of O/OREOS
>
> Anyone else has experienced this (and maybe even a solution) ?
> Henk
> --
> Henk, PA3GUO
>
I need some help. I recently acquired a new HP 64 bit computer that has
win 7 home
OS. I tried to load the unitrack software and it would not permit me to
do it. I have ordered
a LVB tracker from AMSAT and not received it yet. I have tried to
download the latest
upgrades from Unitrack but can not install on the 64 bit machine. Any
help would be
appreciated.
73,
Dale/KL7XJ
On the comment on using the Virtual PC for Windows 7 to run an XP emulation,
This add on will not work with any version of Windows 7 Home, either 32 or
64 but will need to be at least Windows 7 Professional. This unless anybody
has a hack to make the download think it is running on the Business platform
instead of Home.
Tom Schuessler
2713 Lake Gardens Drive
Irving, Texas 75060
972-986-7456
214-403-1464 (Cell)
n5hyp(a)arrl.net
_____________________________________________________
At 05:34 PM 11/29/2010 -0900, Dale Hershberger wrote:
>I need some help. I recently acquired a new HP 64 bit computer that has
>win 7 home
>OS. I tried to load the unitrack software and it would not permit me to
>do it. I have ordered
>
>a LVB tracker from AMSAT and not received it yet. I have tried to
>download the latest
>upgrades from Unitrack but can not install on the 64 bit machine. Any
>help would be
>appreciated.
>
>73,
>Dale/KL7XJ
Good evening,
Name here is Larry, N1MIW. I recently moved to a better (higher) QTH and
finally got around to setting up the satellite station "almost" like it used
to be, but am experiencing some reception difficulties on UHF. I'm hoping
someone out here can help me diagnose what I'm doing wrong, or what the
problem is. I am using a Yaesu FT-847 which is computer controlled, as well
as the Yaesu G-5400 rotator. The antennas are mounted on a solid fiberglass
mast only ~17 feet off the ground, and fed with LMR-400. The frequencies are
correct for the satellite I want to use.
My problem is with the 436CP30 antenna. I cannot seem to find good
results with it since my move - terrestrial or sat related. My SWR is around
1.5:1 at 435MHz, and the polarity switch is working. I tried changing
feedlines and removing the pre-amp, but I still cannot seem to make it work
correctly. I am trying to receive SO-50 D/L, and VO-52 U/L, but both are
just not working like I remember it being before the move. I don't have any
broken or mis-aligned elements (that I noticed - I'll look again). The only
thing I was looking into was instead of having it placed on the boom in a
"+" pattern was making it an "x" pattern - would that make a difference? I
don't remember hearing or reading about that anywhere, so I was looking for
your opinion.
On a side note, what's your opinion of this antenna? Like I said, I used
to have good luck with it, but I'm not sure what's different, except the new
home. Should I get "horizon" to "horizon" coverage (plus or minus a few
degrees)? Oh, I also looped the coax off the back like the manual states,
but the improvement is very minimal. I checked the "jumpers" at the tuning
box, and they seem OK too.
I'm running out of ideas, and any guidance would be appreciated. Thanks &
looking forward to working the birds again!
73's... Larry N1MIW
I was wondering if someone could give me the pros and cons of the tracking software. I have orbitron, the one from amsat ( can't think of the name ) then I see ARRL has a software. What are the pro's and cons on these three and are there more ?
Mike N8GBU
Aloha All
Success stories do not always tell the
whole story. While I have been very
successful with 1200 baud packet on
my Kenwood D700 I have done very
little with the 9600 baud. The new
Satellite RAX is 9600 GMSK. In
tracking the bird, the 20 second interval
packets sound like fuzzy static.
It seems to me that other 96k signals
I have heard sounded much like APRS
at 1200 except significantly speeded
up. Is GMSK different and will the
D700 interpret the signal???
I haven't found a whole lot on this topic
on the web.
Mahalo and a great week to all.
73
robert, NH7WN
Honolulu
I have been unable , so far, to get anything from FAST 2 on 145.825 with
satpc tracking for
doppler. I get a quick carrier keyed up but no packet data. And that is on
some pretty good 35+ degree passes. Any help would be appreciated.
I am able to hear and get data from FAST 1 fine. Thank es 73
Joe
KI4TZ
