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CX2SA > SATDIG 06.05.11 21:06l 459 Lines 13658 Bytes #999 (0) @ WW
BID : AMSATBB6262
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Subj: AMSAT-BB-digest V6 262
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Sent: 110506/1903Z @:CX2SA.LAV.URY.SA #:3730 [Minas] FBB7.00e $:AMSATBB6262
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: AO-51 troubles (Alan P. Biddle)
2. Re: AO-51 troubles (Andrew Glasbrenner)
3. Re: AO-51 troubles (Zachary Beougher)
4. Re: AO-51 troubles (P.H.)
5. Re: AO-51 troubles (Andrew Glasbrenner)
6. HRD (Kevin Deane)
7. Re: HRD (George Henry)
8. HRD (Kevin Deane)
----------------------------------------------------------------------
Message: 1
Date: Fri, 6 May 2011 12:04:58 -0500
From: "Alan P. Biddle" <APBIDDLE@xxxxxx.xxx>
Subject: [amsat-bb] Re: AO-51 troubles
To: "'P.H.'" <pholmes102@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <799E551490B34FCB895332FCCC05577A@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
Pete,
Actually, there has been a west coast control station, for exactly that
reason, for some time. However, the problem is that without being able to
keep the computer up through eclipse, everything is lost each orbit.
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of P.H.
Sent: Friday, May 06, 2011 11:47 AM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: AO-51 troubles
Hi Drew & all,
I'm not 100% sure how the software uploads take place, however I have
a suggestion.
Would there be any benefit having one uplink station on the west coast
and another on the East coast, purely to allow the complete upload to
take place before an eclipse?
Perhaps the users of AO-51 would donate to a road-trip fund to send
one of the command stations /portable to a location of benefit to
assist ?
Just trying to think outside the box :-)
good luck with the uploads,
73
Pete
2i0VAX
On Fri, May 6, 2011 at 1:31 PM, Andrew Glasbrenner
<glasbrenner@xxxxxxxxxx.xxx> wrote:
> All,
>
> We are having a difficult time trying to restore AO-51 to operation.
Currently, the satellite will not retain the upload of the flight software
across eclipse. The batteries are in very poor condition. We have a few more
things to try, but with eclipses peaking around July at ~27 minutes, the
long term situation is grim. There is a brief period around November where
eclipses are as short as 16 minutes, but past that it is a long climb to 30
minutes or longer eclipses for many years. We have no expected "return to
service" date. If you have 9k6 digital capability, you can listen in on our
attempts at recovery on 435.150 on many passes over the US.
>
> Please support AMSAT-NA and the other AMSAT groups around the world, and
help us get new satellites into orbit. Projects like Fox, FunCube, P3E, and
Kiwisat need your financial support to keep our amateur satellite fleet
flying.
>
> 73, Drew KO4MA
> AMSAT-NA VP Operations
>
>
> _______________________________________________
> 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: 2
Date: Fri, 6 May 2011 13:18:39 -0400 (GMT-04:00)
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: AO-51 troubles
To: "P.H." <pholmes102@xxxxx.xxx>, amsat-bb@xxxxx.xxx
Message-ID:
<20330080.1304702320166.JavaMail.root@xxxxxxxxxxxxxxxx.xxx.xx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hi Pete,
We can actually get all of the really important files up in an optimum pass,
but since all of that is stored in volatile memory, when it comes around
again it's gone. AO-51 requires the software to be running to do much of
anything, as all the audio and control is run through the IHU. Even if we
could upload everything in one pass, there is nothing to keep it from
resetting right away during the next eclipse. We've not given up, but it's
looking really grim right now.
Let me point out that AMSAT-NA has been learning from our past (and present)
experiences. The current design for Fox, seen as a replacement for AO-51 by
many, includes what the team has been referring to as "zombiesat" mode. In
this mode, Fox will operate without the IHU, and maybe even without the
batteries while illuminated. We would still retain the ability to command
the transmitter off if need be. As I understand it, the design also includes
non-volatile memory for some systems, which would really be useful right now
on 51.
73, Drew KO4MA
AMSAT-NA VP Operations
-----Original Message-----
>From: "P.H." <pholmes102@xxxxx.xxx>
>Sent: May 6, 2011 12:46 PM
>To: amsat-bb@xxxxx.xxx
>Subject: [amsat-bb] Re: AO-51 troubles
>
>Hi Drew & all,
>
>I'm not 100% sure how the software uploads take place, however I have
>a suggestion.
>
>Would there be any benefit having one uplink station on the west coast
>and another on the East coast, purely to allow the complete upload to
>take place before an eclipse?
>
>Perhaps the users of AO-51 would donate to a road-trip fund to send
>one of the command stations /portable to a location of benefit to
>assist ?
>
>Just trying to think outside the box :-)
>
>good luck with the uploads,
>
>73
>
>Pete
>
>2i0VAX
------------------------------
Message: 3
Date: Fri, 6 May 2011 13:24:53 -0400
From: "Zachary Beougher" <zack.kd8ksn@xxxxxxx.xxx>
Subject: [amsat-bb] Re: AO-51 troubles
To: <amsat-bb@xxxxx.xxx>
Message-ID: <SNT111-DS248BD759022A270B10EAFCB3830@xxx.xxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
With the recent bad news about AO51, possibly for the long term, I know
several are wondering about HO68's status. Does anyone have any sort of
update on when/if it will be back in service? I understand it may have long
term issues like AO51 may have, but it would be nice to at least know where
it stands - even if there is no hope of it coming back anytime soon. I have
seen this question posted many times here on the -bb, but I have never seen
an answer, unless I overlooked it.
73,
Zack
KD8KSN
-----Original Message-----
From: Andrew Glasbrenner
Sent: Friday, May 06, 2011 8:31 AM
To: amsat-bb
Subject: [amsat-bb] AO-51 troubles
All,
We are having a difficult time trying to restore AO-51 to operation.
Currently, the satellite will not retain the upload of the flight software
across eclipse. The batteries are in very poor condition. We have a few more
things to try, but with eclipses peaking around July at ~27 minutes, the
long term situation is grim. There is a brief period around November where
eclipses are as short as 16 minutes, but past that it is a long climb to 30
minutes or longer eclipses for many years. We have no expected "return to
service" date. If you have 9k6 digital capability, you can listen in on our
attempts at recovery on 435.150 on many passes over the US.
Please support AMSAT-NA and the other AMSAT groups around the world, and
help us get new satellites into orbit. Projects like Fox, FunCube, P3E, and
Kiwisat need your financial support to keep our amateur satellite fleet
flying.
73, Drew KO4MA
AMSAT-NA VP Operations
_______________________________________________
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: 4
Date: Fri, 6 May 2011 18:28:32 +0100
From: "P.H." <pholmes102@xxxxx.xxx>
Subject: [amsat-bb] Re: AO-51 troubles
To: amsat-bb@xxxxx.xxx
Message-ID: <BANLkTimA88CiabTS__bb9eQ3+vFzrpiQXw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Ok, all is a little clearer right now!
I wasn't aware that the sat relied on volatile memory to store the
main software. Was there a particular reason why this was chosen over
non-volatile or was it just an oversight that this issue would
eventually happen when the batteries became exhausted?
Just curious!
Think now is a good time to remind everyone that an extra few dollars
into the Amsat Fox fund wouldn't do any harm :-)
73
Pete
2i0VAX
On Fri, May 6, 2011 at 6:18 PM, Andrew Glasbrenner
<glasbrenner@xxxxxxxxxx.xxx> wrote:
>
> Hi Pete,
>
> We can actually get all of the really important files up in an optimum
pass, but since all of that is stored in volatile memory, when it comes
around again it's gone. AO-51 requires the software to be running to do much
of anything, as all the audio and control is run through the IHU. Even if we
could upload everything in one pass, there is nothing to keep it from
resetting right away during the next eclipse. We've not given up, but it's
looking really grim right now.
>
> Let me point out that AMSAT-NA has been learning from our past (and
present) experiences. The current design for Fox, seen as a replacement for
AO-51 by many, includes what the team has been referring to as "zombiesat"
mode. In this mode, Fox will operate without the IHU, and maybe even without
the batteries while illuminated. We would still retain the ability to
command the transmitter off if need be. As I understand it, the design also
includes non-volatile memory for some systems, which would really be useful
right now on 51.
>
> 73, Drew KO4MA
> AMSAT-NA VP Operations
>
> -----Original Message-----
>>From: "P.H." <pholmes102@xxxxx.xxx>
>>Sent: May 6, 2011 12:46 PM
>>To: amsat-bb@xxxxx.xxx
>>Subject: [amsat-bb] Re: AO-51 troubles
>>
>>Hi Drew & all,
>>
>>I'm not 100% sure how the software uploads take place, however I have
>>a suggestion.
>>
>>Would there be any benefit having one uplink station on the west coast
>>and another on the East coast, purely to allow the complete upload to
>>take place before an eclipse?
>>
>>Perhaps the users of AO-51 would donate to a road-trip fund to send
>>one of the command stations /portable to a location of benefit to
>>assist ?
>>
>>Just trying to think outside the box :-)
>>
>>good luck with the uploads,
>>
>>73
>>
>>Pete
>>
>>2i0VAX
>
>
>
>
------------------------------
Message: 5
Date: Fri, 6 May 2011 13:49:54 -0400 (GMT-04:00)
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: AO-51 troubles
To: "P.H." <pholmes102@xxxxx.xxx>
Cc: amsat-bb <amsat-bb@xxxxx.xxx>
Message-ID:
<20296859.1304704194745.JavaMail.root@xxxxxxxxxxxxxxxx.xxx.xx.xxxxxxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
I'm not an expert here...but the memory is constantly "washed" for errors
from radiation. I think the non-volatile type stuff didn't/doesn't have the
read/write cycles we'd need for that. There is ROM onboard that holds the
bootloader and a very stripped down OS.
73, Drew KO4MA
-----Original Message-----
>From: "P.H." <pholmes102@xxxxx.xxx>
>Sent: May 6, 2011 1:28 PM
>To: amsat-bb@xxxxx.xxx
>Subject: [amsat-bb] Re: AO-51 troubles
>
>Ok, all is a little clearer right now!
>
>I wasn't aware that the sat relied on volatile memory to store the
>main software. Was there a particular reason why this was chosen over
>non-volatile or was it just an oversight that this issue would
>eventually happen when the batteries became exhausted?
>
>Just curious!
>
>Think now is a good time to remind everyone that an extra few dollars
>into the Amsat Fox fund wouldn't do any harm :-)
>
>
>73
>
>Pete
>2i0VAX
>
------------------------------
Message: 6
Date: Fri, 6 May 2011 10:58:06 -0700
From: Kevin Deane <summit496@xxxx.xxx>
Subject: [amsat-bb] HRD
To: <amsat-bb@xxxxx.xxx>
Message-ID: <COL107-W338C5F492A8E81E5C5055683830@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Does anyone know if I can copy the logbook file for HRD out out of my tower
and slip it into my laptop? If so what is the name of the file, I am having
troble finding it...
Thanks, and am shedding 68 tears for Echo, but have not lost HOPE...
Kevin
KF7MYK
------------------------------
Message: 7
Date: Fri, 6 May 2011 11:04:02 -0700 (PDT)
From: George Henry <ka3hsw@xxx.xxx>
Subject: [amsat-bb] Re: HRD
To: Kevin Deane <summit496@xxxx.xxx>, amsat-bb@xxxxx.xxx
Message-ID: <320761.97000.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Here's your answer, courtesy of Google:?
http://wiki.ham-radio-deluxe.com/index.php?title=Template:FAQ_Logbook_database
_file_location
George, KA3HSW
----- Original Message ----
> From: Kevin Deane <summit496@xxxx.xxx>
> To: amsat-bb@xxxxx.xxx
> Sent: Fri, May 6, 2011 12:58:06 PM
> Subject: [amsat-bb] HRD
>
>
>
> Does anyone know if I can copy the logbook file for HRD out out of my
tower and
>slip it into my laptop? If so what is the name of the file, I am having
troble
>finding it...
>
> Thanks, and am shedding 68 tears for Echo, but have not lost HOPE...
>
> Kevin
> KF7MYK
>
------------------------------
Message: 8
Date: Fri, 6 May 2011 11:27:14 -0700
From: Kevin Deane <summit496@xxxx.xxx>
Subject: [amsat-bb] HRD
To: <amsat-bb@xxxxx.xxx>
Message-ID: <COL107-W24EB52876D8E31FF8E5F3083830@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Thanks guys that was fast, I guess I could have looked a little
harder...Must be getting old...
Kevin
------------------------------
_______________________________________________
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 262
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