I sincerely appreciate all of the feedback on my SatPC32 issues. I
figured out the Ghost tracking' issue or at least corrected the
problem. Somehow my location became corrupted. I noticed that the
little white dot (QTH) was missing from its normal location. By some
means my latitude/longitude data changed. I have put in the correct
numbers now and I expect the ghost will leave the area.
As was mentioned, the issue in which all control stops is probably an
interface problem. It may even be the notebooks having older firmware.
I will continue to tinker in that area. The Panasonic Toughbook is a
nice computer for ham work as it has both USB ports and a true serial
port. The fact that the LVB Tracker works flawlessly with my Macbook
through the same USB cable, more than likely this problem is Panasonic
Toughbook related. I did try both USB ports on the Toughbook and had
the same results. I will keep everyone informed as to how I resolve my
Thank you again for all of the responses. I feel sure I am on the
correct path to making all of the components play nicely together. Of
course progress is slow when there is a satellite above the horizon :)
I have just returned from a satellite conference and I think new technology
will now give us a path to HEO. Challenging of course but for the clever
doable. Please take a look at a ~ 2 minute video that tells how
nick ARS K5QXJ EM30xa 30.1N 92.1W
Office 337 593 8700
Cell 337 258 2527
Helping UL become a world Class Engineering and Educational School
I'm also starting to get my things together for the Dayton Fest. I think
hands down AMSAT has the best demo there. You can see and hear guys
actually work the birds, see the setup and ask questions. Hope to see you
Even if the technique required 5 years to advance to HEO it would be a
positive step since the amateur launch opportunities directly to HEO are
measured in decades and the cost in 10's millions of dollars.
This reminds me of a commercial payload that failed to make GEO. The
folks at AGI (STK Satellite Toolkit) devised a path circling the moon
which used the lunar gravity to accelerate and return the satellite to
its intended GEO position without depleting much of its limited station
Leikhim and Associates
I am gathering up my clothes for my trip to Dayton. I hope to see and
meet as many satellite folks as possible! I have my name in the hat to
work at the AMSAT booth. I worked last year and had the best time!
I keep seeing many emails about what satellites are operating. It seems
many think that none are working. Well I can tell you that I am having
a blast working FO-29, SO-50 , VO-52, and grandpa AO-7. I do admit that
AO-7 has a bit of a stutter step when too many get on or someone cranks
their power up too much. Take a look at the link Bob, W7LRD, posted
regarding active satellites: http://aar29.free.fr/sat/indexlogin.php
Each contact is so exciting. OMG, I worked Brazil last night too!
FO-29 sounded just like 20 meters last night! It is so nice to hear
those making their first contact and so nice to renew old friendships.
Hope to meet you or at least work you!
...still excited about amateur radio after being active for 50+ years!
I need some advice. I have been trying to run Sat32PC to track
satellites with my G5500 rotor and LVB Tracker. It seems I am running
into one problem after another. Many times the program stops working
when I get towards a lower elevation while tracking the satellite. I
get most of the pass and then everything stops. I cannot park the rotor
and must reboot the computer as restarting the program gives com
errors. This afternoon Sat32PC was tracking a ghost. It clearly
thought something was flying above. The only satellite I had selected
was FO-29 and it definitely was well past a fly over. In fact, I could
not find an amateur satellite that was anywhere that the program should
be tracking. I would really like to get the bugs out as I plan to use
my Panasonic Toughbook in a portable operation. I am using the XP
Professional operating system with the USB communicating with the LVB
Tracker. I also have a Macbook and MacDoppler has operated flawlessly.
It does what it is suppose to do and does it well. Please no flame wars
over Mac vs PC. I use both and basically am happy with both. On
Sat32PC, the Keps are updated so I am not feeding the controller wrong
info. On the screen, the satellite position is visibly correct. On the
bottom of the screen the Azimuth / Elevation were wrong when it was
tracking the ghost. I have two Toughbooks and both exhibit the same
problem. Has anyone had the same or similar problems?
--- On Mon, 29/4/13, Stefan Wagener <wageners(a)gmail.com> wrote:
> Thanks Bob,
> That's why it is important to read the complete conversation.
> This is NOT about Cubesats, staying in orbit, etc. It is about getting
> into an HEO beyond 20000km.
It's the same thing, what gets you from 310 to 700 km can also get you to 7200 or 20000 km. But first the technology needs to be proved in Space CubeSats like Romit-1 will do that if they can get launches.
Bob, on the topic of extending orbit lifetime there's a UK company, a University of Southampton spin-off, who are doing some interesting work in this area.
Mars-Space Ltd have developed a Pulse Plasma Thruster for a 1U CubeSat designed to extend orbit lifetime which was shown at a recent CubeSat Workshop, details at
They are also working on Ion Motors.
73 Trevor M5AKA
You could ask Dave Palmer, KB5WIA if he noted that spec.,
when he rebuilt his Yaesu motor last year (March 2012)
From: "Mike Hoblinski"
Subject: [amsat-bb] G5500 Rotor motor Question
Anybody know what the rpm of the AC motors are. I know from the Yaesu
specs that after all of the gear reduction they list EL as 67 seconds for EL
and 58 Seconds for AZ.
I would like to experiment with an AZ and EL system but like to see what RPM
the motor starts out with and how much torque to get the final results. They show
Elevation at 101 FT-LBS and AZ at 44 FT-lbs.
I have looked around to see if somewhere the specs are available for the motor
but have had no luck. I have seen quite a few pictures of rebuilds of that rotor
with part number and have a manual that shows parts.