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CX2SA > SATDIG 03.11.11 18:13l 1002 Lines 32438 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: Need help to compile Gpredict (Charles Suprin)
2. Thanks!!! (Hector Luis Martinez Sis)
3. Some Elmering requested for uplinking to ARISSAT-1 (Burns Fisher)
4. Satellite Tracking? (Geoff)
5. Rv: DK78 2011-11-04 (Ted)
6. Re: Some Elmering requested for uplinking to ARISSAT-1 (DF2MZ)
7. Re: Some Elmering requested for uplinking to ARISSAT-1
(David Palmer KB5WIA)
8. Re: Need help to compile Gpredict (Joseph Armbruster)
9. Re: Need help to compile Gpredict (WA6FWF)
10. Re: DN80/DN81 (gkcarr@xxxxxxxxxx.xxxx
11. Re: Need help to compile Gpredict (Joseph Armbruster)
12. Re: Satellite Tracking? (John Heath)
13. Re: Satellite Tracking? (Armando Mercado)
----------------------------------------------------------------------
Message: 1
Date: Wed, 2 Nov 2011 15:27:11 -0400
From: Charles Suprin <hamaa1vs@xxxxx.xxx>
To: Michael Schulz <mschulz@xxxxxxxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Need help to compile Gpredict
Message-ID:
<CALyAeG8+UYKP_EuPc0A3rJts6cd+cj10Z=p1URsff2Muo5WFKA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hello,
If one wants the development code which is updated more frequently, one
needs to compile their own.
Charles
On Nov 2, 2011 7:13 AM, "Michael Schulz" <mschulz@xxxxxxxxxxxxxx.xxx> wrote:
> Hi,
>
> On Tue, Nov 1, 2011 at 5:23 PM, Oscar Vera <auctyah00vera@xxxxx.xxx>
> wrote:
>
> > Hello,
> >
> > I have been having problems to compile Gpredict on mac. Is anyone gong
> to
> > the AMSAT meeting and could provide a little help to compile Gredict?
> >
>
> Why do you need to build it from source? There are binaries of 1.3
> available here:
>
> http://www.hmug.org/pub/MacOS_X/X/Applications/Science/gpredict/
>
> Never built it on my Mac, only on Linux from SVN so can help with that but
> the binaries should
> get you going.
>
> 73 Mike K5TRI
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 2
Date: Wed, 2 Nov 2011 16:00:58 -0400 (EDT)
From: "Hector Luis Martinez Sis" <hmartinez@xxx.xxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Thanks!!!
Message-ID: <3341.10.14.32.18.1320264058.squirrel@xxxxxx.xxx.xxx.xx>
Content-Type: text/plain;charset=utf-8
Hello Guys
Thanks very much to all who worked me during my Satellite Demonstration from
the sea
walk of my city.
I appreciate your participation!
73!
Hector, CO6CBF
***************************************
Genius is one per cent inspiration,
and ninety-nine per cent
perspiration.
-- Thomas A. Edison
***************************************
---
Free the Cuban Five!
http://www.injusticia.cubaweb.cu/, http://www.antiterroristas.cu/
Participe en Universidad 2012, del 13 al 17 de febrero de 2012. Habana, Cuba.
http://www.congresouniversidad.cu/
Consulte la Enciclopedia Colaborativa Cubana: http://www.ecured.cu/
------------------------------
Message: 3
Date: Wed, 2 Nov 2011 17:12:17 -0400
From: Burns Fisher <burns@xxxxxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Some Elmering requested for uplinking to ARISSAT-1
Message-ID:
<CABX7KxU2d651JMSAExSYKrSmjhNKPstjGGt3Nptzif0pKK61fw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi everyone,
A few months ago I asked for help receiving the beacon on ARISSAT-1 and got
a lot of helpful suggestions. It turns out that my biggest problem was
trying to listen from inside the house. Moving the antenna outside was the
key. Heaven only knows what my shingles are made of...I never expected a
problem!
So now that I got pretty comfortable with receiving, it was time to step up
from my little HT and get a somewhat more flexible and powerful rig. The
only satellite rigs still on the market are the ICOM 9100 and the Kenwood
TS-2000 family. I know about the birdies in the TS-2000, but I could not
really afford the ICOM...maybe should have gone for a used 910 or
something, but I did end up with a TS-2000.
I still have the Eggbeater omni/circularly polarized 2m antenna for the
downlink, and it is working great! I get a nice strong signal from the FM
beacon, and I'm able to hear people on the transponder. I also either
picked up the CW beacon or someone using CW on the transponder. So
anyway, the downlink is working fine.
Now for the uplink: I built myself a 70cm Parasitic Lindenblad per the
plans of Tony, AA2TX. I have it outside about 10 feet up, and an SWR meter
shows something reasonable (1.3ish) so I guess I did not totally mess
it up. I can also hit the local repeater 5 miles away on fairly low power,
etc. The Lindenblad should be circularly polarized with kind of a
donut-shaped pattern (more gain toward the horizon where the bird is
further away, less overhead where it is closer). But so far I have not
been able to hear myself trying to contact ARISSAT.
Here is what I tried: I set the TS2000 to satellite mode, and set it up
so I was transmitting in the middle of the transponder uplink band on USB.
Then I started scanning through the downlink passband while transmitting
("W2BFJ, tuning") using the "RIT" control so that transmit frequency was
not changing. I was listening with LSB. I heard another station weakly,
but not myself.
Can someone comment on my method, both in terms of technical goodness and
good operating practice? A couple specific questions: 1) Xmitting in the
middle of the passband and just scanning, I should be able to at least
briefly find myself without messing with doppler, right? I was planning to
lock the receive and transmit frequencies (constant sum) once I found
myself and follow the doppler by hand, but I never got to that step. 2)
I'm right that the sidebands are inverted from receive to xmit, right? I
think I would hear something even if that was wrong. 3) Finally, what
about power? How much have you required for success on ARRISAT? I was
running around 25W. I could boost up to as high as 50, but I can only
diddle so many knobs in 5 or 10 minutes :-) 3) I know a beam would be
better, but trying to reduce variables, and pointing is one of them.
Besides, I'm inside in my shack! But has anyone successfully uplinked with
an omni/circular? I can always remove the parasitic elements and end up
with a center-fed dipole to remove the circularity. (Not sure how that
would affect the impedance match...)
Thanks!
Burns, W2BFJ
------------------------------
Message: 4
Date: Thu, 3 Nov 2011 08:42:08 +1100
From: Geoff <vk2tfg@xxxxxxx.xxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Satellite Tracking?
Message-ID: <201111030842.08594.vk2tfg@xxxxxxx.xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
On Thu, 3 Nov 2011 04:16:13 am Armando Mercado wrote:
> Greetings,
>
> Well, in all seriousness, Who would
> like to post a set of keps for one (or
> all) of the amateur satellites now flying
> using the methods pioneered by
> Karl Meinzer, DJ4ZC and James Miller,
> G3RUH?
>
> I recall a few weeks ago someone
> decrying the lack technical discussion
> on the board.
>
> ...Well, here go you folks!
>
> Best 73's Armando N8IGJ
>
snipped
Hi Armando et al,
I don't know about the methods written up by Karl & James. For a long time
I've had a project using Doppler shift curves in the back of my mind
(the "target" doesn't need to cooperate). I have most of the hardware based
around my HPSDR box and a t'bolt frequency reference. The software hasn't
even progressed beyond ideas and algorithms. I haven't even picked a language
or development environment (one day).
I can see a very accurate Doppler shift curve being useful in the early days
after a multiple cubesat launch. How accurate would you need to be to
pick "your" cubesat from the crowd? One pass? multiple passes?
Anyway that's this morning's breakfast coffee ideas from me. Have fun
y'all :-).
73 de Geoff vk2tfg (/3).
------------------------------
Message: 5
Date: Wed, 2 Nov 2011 15:12:53 -0700
From: "Ted" <k7trkradio@xxxxxxx.xxx>
To: "'Omar Alvarez'" <xe1aom@xxxxx.xxx>, <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] Rv: DK78 2011-11-04
Message-ID: <7084CD064A164B12BE1A1CD3B2664588@xxxxxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
?Feliz cumplea?os a t?!
?Feliz cumplea?os a t?!
?Feliz cumplea?os a Omar !
?Feliz cumplea?os a t?!
73, Ted, K7TRK
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Omar Alvarez
Sent: Tuesday, November 01, 2011 9:51 AM
To: AMSAT-BB@xxxxx.xxx
Subject: [amsat-bb] Rv: DK78 2011-11-04
Hello
Celebrating my birthday I want to activate DK78 for all my Sat friends.
Hope be in AO-51 at 22:46 UTC.
Maybe I will be in AO-51 at 21:10 UTC, is a low pass for me in my portable
QRP station.
I really try to celebrate my 42 years old? from this grid at the pacific
coast.
Its my birthday? but I will try it for all of you.
Regards
Omar
XE1AO
?
********************************
M.C. Omar Alvarez C?rdenas
Facultad de Telematica, U
de C
316 1075
xe1aom@xxxx.xx
omar_ac@xxxxxxx.xxx
********************************
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 6
Date: Wed, 02 Nov 2011 23:26:01 +0100
From: "DF2MZ" <Edgar.Kaiser@xxxxxxxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Some Elmering requested for uplinking to
ARISSAT-1
Message-ID: <4EB1C379.6030008@xxxxxxxx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi,
I would strongly recommend using software controlled Doppler correction.
It should be considered state of the art to correct uplink and downlink
in order to keep the signal at fixed frequency in the satellites passband.
Before PCs became affordable, the manual standard procedure was to keep
the rx frequency fixed and tune the tx until you hear yourself. I find
it quite a nightmare and too many people are still doing it that way,
performing very badly most of the time.
With up-to-date orbital elements and precisely synchronized PC clock I
mostly manage to keep my downlink signal within the 200 Hz passband of
the CW filter.
Your other points:
- Circular polarization should be fine and provide a more stable signal.
- The tranponder inverts, standard is to receive USB and transmit LSB
- It is much easier to find yourself by transmitting CW, best is a
series of dits using an automatic keyer
- CW is anyway more efficient
One probably very important point is the missing UHF antenna on Arissat.
I am using an FT-847, 50W and a 17el cross yagi, giving more than 1 KW
ERP. I can hear myself fairly well, but not very stable. I hear the
transponder noise floor very well, so the uplink seems to be the bottleneck.
There are reports about successful contacts with omni antennas, but it
is probably not easy. The bird is pretty deaf.
Did you try your setup on VO52? This is an easy one and 25W to the
Lindenblad should work very well. I think even AO7 mode B is easier than
Arissat and also FO29 (this one is mode J or V/U transponder).
Like you, I am pretty new to the subject. I learned a lot by writing my
own software for automatic Doppler correction for the FT-847 and for
Rotor control. I am using NOVA for tracking.
Good luck,
Edgar
DF2MZ
Am 02.11.2011 22:12, schrieb Burns Fisher:
> Hi everyone,
>
> A few months ago I asked for help receiving the beacon on ARISSAT-1 and got
> a lot of helpful suggestions. It turns out that my biggest problem was
> trying to listen from inside the house. Moving the antenna outside was the
> key. Heaven only knows what my shingles are made of...I never expected a
> problem!
>
> So now that I got pretty comfortable with receiving, it was time to step up
> from my little HT and get a somewhat more flexible and powerful rig. The
> only satellite rigs still on the market are the ICOM 9100 and the Kenwood
> TS-2000 family. I know about the birdies in the TS-2000, but I could not
> really afford the ICOM...maybe should have gone for a used 910 or
> something, but I did end up with a TS-2000.
>
> I still have the Eggbeater omni/circularly polarized 2m antenna for the
> downlink, and it is working great! I get a nice strong signal from the FM
> beacon, and I'm able to hear people on the transponder. I also either
> picked up the CW beacon or someone using CW on the transponder. So
> anyway, the downlink is working fine.
>
> Now for the uplink: I built myself a 70cm Parasitic Lindenblad per the
> plans of Tony, AA2TX. I have it outside about 10 feet up, and an SWR meter
> shows something reasonable (1.3ish) so I guess I did not totally mess
> it up. I can also hit the local repeater 5 miles away on fairly low power,
> etc. The Lindenblad should be circularly polarized with kind of a
> donut-shaped pattern (more gain toward the horizon where the bird is
> further away, less overhead where it is closer). But so far I have not
> been able to hear myself trying to contact ARISSAT.
>
> Here is what I tried: I set the TS2000 to satellite mode, and set it up
> so I was transmitting in the middle of the transponder uplink band on USB.
> Then I started scanning through the downlink passband while transmitting
> ("W2BFJ, tuning") using the "RIT" control so that transmit frequency was
> not changing. I was listening with LSB. I heard another station weakly,
> but not myself.
>
> Can someone comment on my method, both in terms of technical goodness and
> good operating practice? A couple specific questions: 1) Xmitting in the
> middle of the passband and just scanning, I should be able t was wrong. 3) Finally, what
> about power? How much have you required for success on ARRISAT? I was
> running around 25W. I could boost up to as high as 50, but I can only
> diddle so many knobs in 5 or 10 minutes :-) 3) I know a beam would be
> better, but trying to reduce variables, and pointing is one of them.
> Besides, I'm inside in my shack! But has anyone successfully uplinked with
> an omni/circular? I can always remove the parasitic elements and end up
> with a center-fed dipole to remove the circularity. (Not sure how that
> would affect the impedance match...)
>
> Thanks!
>
> Burns, W2BFJ
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
>
------------------------------
Message: 7
Date: Wed, 2 Nov 2011 15:49:44 -0700
From: David Palmer KB5WIA <kb5wia@xxxxx.xxx>
To: Burns Fisher <burns@xxxxxx.xx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Some Elmering requested for uplinking to
ARISSAT-1
Message-ID:
<CAO-vtPNr9=3YS8pv1hPk2aAcdE39h9m86G2OU30a-Xgwezw4fQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi Burns,
My 2 cents -- sounds like things are mostly okay (your recieving setup
is obviously good if you can hear others in the transponder passband).
The big factor that I can see is lack of gain on the uplink. I've
successfully gotten into ARISSAT with my 5W QRP radio, but that's
using a 13 dBd gain yagi. In theory the ERP of your 25W uplink isn't
too far below that, so it would be worthwhile trying the 50W to see if
that helps. That or switch to an antenna outside with some gain...
Other factors to consider are sometimes the sats transponder is off
(so even if everything at your end is okay you won't hear your own
signal, nor anyone elses). And the return signal varies greatly from
pass to pass, depending (I think) on the relative orientation of the
antenna stub.
Also be sure to try finding yourself on CW first .... SSB is often
very difficult to copy on ARISSAT, much easier to start with CW and
once you've found yourself switch over.
73! de Dave KB5WIA
> Can someone comment on my method, both in terms of technical goodness and
> good operating practice? ?A couple specific questions: ?1) Xmitting in the
> middle of the passband and just scanning, I should be able to at least
> briefly find myself without messing with doppler, right? ?I was planning to
> lock the receive and transmit frequencies (constant sum) once I found
> myself and follow the doppler by hand, but I never got to that step. ?2)
> I'm right that the sidebands are inverted from receive to xmit, right? ?I
> think I would hear something even if that was wron
------------------------------
Message: 8
Date: Wed, 2 Nov 2011 20:31:56 -0400
From: Joseph Armbruster <josepharmbruster@xxxxx.xxx>
To: Oscar Vera <auctyah00vera@xxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Need help to compile Gpredict
Message-ID: <35E4FFF6-621D-4470-A955-3426D3DFEB0E@xxxxx.xxx>
Content-Type: text/plain; charset=windows-1252
Oscar,
After reading the posts today I figured I would go home and take a quick
stab at it. Here is what I have done and my results so-far. Total time for
these steps was about 10 minutes (and my port upgrade is still running...
grrrrrrr...) Anyhow, hopefully this helps! I'm going to step away from the
computer for a bit, when I come back later, i'll report back on the result
of my final run!
Joseph Armbruster, KJ4JIO
# grabbed gpredict-1.3.tar.gz from sf.net
tar -zxvf gpredict-1.3.tar.gz
./configure
# received an error:
#checking for XML::Parser... configure: error: XML::Parser perl module is
required for intltool
sudo port install intltool
#? waited ?
#ran into a dependency issue with p5.12-xml-parser
#Error: Dependency 'p5.12-xml-parser' not found.
#Error: Status 1 encountered during processing.
#fixed it with:
sudo port selfupdate
sudo port upgrade intltool
sudo port install intltool
#re-ran:
./configure
#received other errors:
#configure: error: Package requirements (gtk+-2.0 >= 2.18.0 glib-2.0 >=
2.22.0 gthread-2.0 >= 2.22.0 goocanvas >= 0.15 libcurl >= 7.19.0) were not
met:
#No package 'goocanvas' found
#No package 'libcurl' found
sudo port install goocanvas
#completed without error
sudo port install libcurl
#completed without error
#re-ran:
./configure
#completed without error
#SUMMARY:
#Gpredict version... : 1.3
#Glib version....... : 2.28.8
#Gio version........ : 2.28.8
#Gthread version.... : 2.28.8
#Gdk version........ : 2.24.7
#Gtk+ version....... : 2.24.7
#GooCanvas version.. : 0.15
#Liburl version..... : 7.22.0
#ran
make
#completed without error (took about 30 seconds to build on my 2.53Ghz
Macbook Pro)
#tried to run it
cd src
./gpredict
#received this error:
#Xlib: extension "RANDR" missing on display "/tmp/launch-gueRnl/org.x:0".
sudo port upgrade outdated
#? this is taking forever right now, because I use ports quite a bit?
#? standby for more!
On Nov 1, 2011, at 6:23 PM, Oscar Vera wrote:
> Hello,
>
> I have been having problems to compile Gpredict on mac. Is anyone gong to
the AMSAT meeting and could provide a little help to compile Gredict?
>
> thank you.
>
> o.
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 9
Date: Wed, 02 Nov 2011 20:26:56 -0700
From: WA6FWF <wa6fwf@xxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Need help to compile Gpredict
Message-ID: <4EB20A00.7040604@xxxxxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
looks like your RANDR issue is a known bug, looking out on the
macports.org website
What does 'Xlib: extension "RANDR" missing on display
"/tmp/launch-XXXXXX/:0"' mean??
<mailbox:///C%7C/Users/Kevin%20Schuchmann/AppData/Roaming/Thunderbird/Profiles
/ezo1336t.default/Mail/Local%20Folders/Inbox.sbd/amsat-bb?number=2241226#randr
>
Many X11 programs try to use the RANDR extension, and print this warning
when it is not available. The RANDR extension is not available in the
Apple-provided X11 server in Snow Leopard and earlier. It is supported
in XQuartz <http://xquartz.macosforge.org> 2.6.0 as well as the MacPorts
X11 servers.
Unless you have a specific need for RandR functionality, this warning
can be safely ignored.
On 11/2/2011 5:31 PM, Joseph Armbruster wrote:
> Oscar,
>
> After reading the posts today I figured I would go home and take a quick
stab at it. Here is what I have done and my results so-far. Total time for
these steps was about 10 minutes (and my port upgrade is still running...
grrrrrrr...) Anyhow, hopefully this helps! I'm going to step away from the
computer for a bit, when I come back later, i'll report back on the result
of my final run!
>
> Joseph Armbruster, KJ4JIO
>
>
> # grabbed gpredict-1.3.tar.gz from sf.net
> tar -zxvf gpredict-1.3.tar.gz
> ./configure
>
> # received an error:
> #checking for XML::Parser... configure: error: XML::Parser perl module is
required for intltool
>
> sudo port install intltool
> #? waited ?
> #ran into a dependency issue with p5.12-xml-parser
> #Error: Dependency 'p5.12-xml-parser' not found.
> #Error: Status 1 encountered during processing.
> #fixed it with:
> sudo port selfupdate
> sudo port upgrade intltool
> sudo port install intltool
>
> #re-ran:
> ./configure
>
> #received other errors:
> #configure: error: Package requirements (gtk+-2.0>= 2.18.0 glib-2.0>=
2.22.0 gthread-2.0>= 2.22.0 goocanvas>= 0.15 libcurl>= 7.19.0) were not met:
> #No package 'goocanvas' found
> #No package 'libcurl' found
>
> sudo port install goocanvas
>
> #completed without error
>
> sudo port install libcurl
>
> #completed without error
>
> #re-ran:
> ./configure
>
> #completed without error
> #SUMMARY:
> #Gpredict version... : 1.3
> #Glib version....... : 2.28.8
> #Gio version........ : 2.28.8
> #Gthread version.... : 2.28.8
> #Gdk version........ : 2.24.7
> #Gtk+ version....... : 2.24.7
> #GooCanvas version.. : 0.15
> #Liburl version..... : 7.22.0
>
> #ran
> make
>
> #completed without error (took about 30 seconds to build on my 2.53Ghz
Macbook Pro)
>
> #tried to run it
>
> cd src
> ./gpredict
>
> #received this error:
> #Xlib: extension "RANDR" missing on display "/tmp/launch-gueRnl/org.x:0".
>
> sudo port upgrade outdated
>
> #? this is taking forever right now, because I use ports quite a bit?
> #? standby for more!
>
>
>
>
> On Nov 1, 2011, at 6:23 PM, Oscar Vera wrote:
>
>> Hello,
>>
>> I have been having problems to compile Gpredict on mac. Is anyone gong
to the AMSAT meeting and could provide a little help to compile Gredict?
>>
>> thank you.
>>
>> o.
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 10
Date: Wed, 2 Nov 2011 23:27:11 -0500 (CDT)
From: gkcarr@xxxxxxxxxx.xxx
To: "Rodney Waln" <kc0zhf@xxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: DN80/DN81
Message-ID: <1320294431.049924217@xxxxxxx.xxxxxxxxx.xx>
Content-Type: text/plain;charset=UTF-8
I once stopped along a quiet road and started to operate. Soon I noticed a
car pull behind me, so I figured he was curious and I'd be able to promote
ham radio. Turns out, it was a
policeman. I had pulled off across the road from a prison and they were
curious for other reason. He stayed with me during the pass and advised me
not to be so quick to pull off...and be more mindful of my surroundings!
73
George
WA5KBH
-----Original Message-----
From: "Rodney Waln" <kc0zhf@xxxxx.xxx>
Sent: Tuesday, November 1, 2011 19:51
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] DN80/DN81
i operated from dn80/81 by Julesburg, CO off the side of the road,
those that would like a card just send the contact
information to my email and cards will be made up
thanks to those that worked me,
this weekend if the weather holds out i will operate from west of denver, co
kc0zhf
back in dn71
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------------------------------
Message: 11
Date: Wed, 2 Nov 2011 21:59:04 -0400
From: Joseph Armbruster <josepharmbruster@xxxxx.xxx>
To: Oscar Vera <auctyah00vera@xxxxx.xxx>, "amsat-bb@xxxxx.xxx BB"
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Need help to compile Gpredict
Message-ID: <BF80527B-4D8B-4378-8891-8012ECA74997@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Oscar,
I did a make install and everything worked. Let me know if you run into any
issues. Here's a screenshot!
Joseph Armbruster
-------------- next part --------------
On Nov 2, 2011, at 8:31 PM, Joseph Armbruster wrote:
> Oscar,
>
> After reading the posts today I figured I would go home and take a quick
stab at it. Here is what I have done and my results so-far. Total time for
these steps was about 10 minutes (and my port upgrade is still running...
grrrrrrr...) Anyhow, hopefully this helps! I'm going to step away from the
computer for a bit, when I come back later, i'll report back on the result
of my final run!
>
> Joseph Armbruster, KJ4JIO
>
>
> # grabbed gpredict-1.3.tar.gz from sf.net
> tar -zxvf gpredict-1.3.tar.gz
> ./configure
>
> # received an error:
> #checking for XML::Parser... configure: error: XML::Parser perl module is
required for intltool
>
> sudo port install intltool
> #? waited ?
> #ran into a dependency issue with p5.12-xml-parser
> #Error: Dependency 'p5.12-xml-parser' not found.
> #Error: Status 1 encountered during processing.
> #fixed it with:
> sudo port selfupdate
> sudo port upgrade intltool
> sudo port install intltool
>
> #re-ran:
> ./configure
>
> #received other errors:
> #configure: error: Package requirements (gtk+-2.0 >= 2.18.0 glib-2.0 >=
2.22.0 gthread-2.0 >= 2.22.0 goocanvas >= 0.15 libcurl >= 7.19.0) were not
met:
> #No package 'goocanvas' found
> #No package 'libcurl' found
>
> sudo port install goocanvas
>
> #completed without error
>
> sudo port install libcurl
>
> #completed without error
>
> #re-ran:
> ./configure
>
> #completed without error
> #SUMMARY:
> #Gpredict version... : 1.3
> #Glib version....... : 2.28.8
> #Gio version........ : 2.28.8
> #Gthread version.... : 2.28.8
> #Gdk version........ : 2.24.7
> #Gtk+ version....... : 2.24.7
> #GooCanvas version.. : 0.15
> #Liburl version..... : 7.22.0
>
> #ran
> make
>
> #completed without error (took about 30 seconds to build on my 2.53Ghz
Macbook Pro)
>
> #tried to run it
>
> cd src
> ./gpredict
>
> #received this error:
> #Xlib: extension "RANDR" missing on display "/tmp/launch-gueRnl/org.x:0".
>
> sudo port upgrade outdated
>
> #? this is taking forever right now, because I use ports quite a bit?
> #? standby for more!
>
>
>
>
> On Nov 1, 2011, at 6:23 PM, Oscar Vera wrote:
>
>> Hello,
>>
>> I have been having problems to compile Gpredict on mac. Is anyone gong
to the AMSAT meeting and could provide a little help to compile Gredict?
>>
>> thank you.
>>
>> o.
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
------------------------------
Message: 12
Date: Thu, 3 Nov 2011 11:05:42 +0000 (GMT)
From: John Heath <g7hia@xxxxxxxxxx.xxx>
To: Amsat <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Satellite Tracking?
Message-ID: <1320318342.15840.YahooMailRC@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Hi folks,
The Celestrak web site has some great in depth stuff on keps and tracking.
I think most people just drop onto the site to get the keps, ?but its
certainly
worth a more detailed look.
A big thank you to?Dr. Kelso for a great site.
73 John G7HIA
________________________________
From: Geoff <vk2tfg@xxxxxxx.xxx.xx>
To: amsat-bb@xxxxx.xxx
Sent: Wednesday, 2 November, 2011 21:42:08
Subject: [amsat-bb] Satellite Tracking?
On Thu, 3 Nov 2011 04:16:13 am Armando Mercado wrote:
> Greetings,
>
> Well, in all seriousness, Who would
> like to post a set of keps for one (or
> all) of the amateur satellites now flying
> using the methods pioneered by
> Karl Meinzer, DJ4ZC and James Miller,
> G3RUH?
>
> I recall a few weeks ago someone
> decrying the lack technical discussion
> on the board.
>
> ...Well, here go you folks!
>
> Best 73's? Armando? N8IGJ
>
snipped
Hi Armando et al,
I don't know about the methods written up by Karl & James. For a long time
I've had a project using Doppler shift curves in the back of my mind
(the "target" doesn't need to cooperate). I have most of the hardware based
around my HPSDR box and a t'bolt frequency reference. The software hasn't
even progressed beyond ideas and algorithms. I haven't even picked a language
or development environment (one day).
I can see a very accurate Doppler shift curve being useful in the early days
after a multiple cubesat launch. How accurate would you need to be to
pick "your" cubesat from the crowd? One pass? multiple passes?
Anyway that's this morning's breakfast coffee ideas from me. Have fun
y'all :-).
73 de Geoff vk2tfg (/3).
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
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------------------------------
Message: 13
Date: Thu, 3 Nov 2011 12:04:33 -0400
From: "Armando Mercado" <am25544@xxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Satellite Tracking?
Message-ID: <9B967BD03A8642D28215E74E7E323738@xxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Hello Geoff,
The doppler method was used in the early days
of the space age, (and maybe still is). It's a
neat bit of detective work. Monitor the frequency
of the satellite, and determine the time of closest
approach. From that you can determine the
speed and altitude. Build up enough data points
and you can figure out the orbit. Like you said,
the target doesn't need to cooperate, just transmit.
As with the latest cubesat launch, when there are
many objects, it takes several weeks to figure out
who's who. This could be way around that problem.
73 Armando N8IGJ
>Hi Armando et al,
>I don't know about the methods written up by Karl & James. For a long time
>I've had a project using Doppler shift curves in the back of my mind
>(the "target" doesn't need to cooperate). I have most of the hardware based
>around my HPSDR box and a t'bolt frequency reference. The software hasn't
>even progressed beyond ideas and algorithms. I haven't even picked a language
>or development environment (one day).
>I can see a very accurate Doppler shift curve being useful in the early days
>after a multiple cubesat launch. How accurate would you need to be to
>pick "your" cubesat from the crowd? One pass? multiple passes?
>Anyway that's this morning's breakfast coffee ideas from me. Have fun
>y'all :-).
>73 de Geoff vk2tfg (/3).
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 6, Issue 611
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