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CX2SA > SATDIG 28.08.11 02:46l 1258 Lines 45437 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: SO67 - HO68 Status (B J)
2. Re: SO67 - HO68 Status (Hans)
3. SarPC32 and local repeater (Ronald G. Parsons)
4. Re: SarPC32 and local repeater (jmfranke)
5. Re: AMSAT-BB Digest, Vol 6, Issue 492 (Louis McFadin)
6. Second Call for Papers for 2011 Symposium (Daniel Schultz)
7. Apology (WILLIAMS MICHAEL)
8. Re: AMSAT-BB Digest, Vol 6, Issue 492 (Greg D.)
9. ANS-240 AMSAT News Service Weekly Bulletins (JoAnne Maenpaa)
----------------------------------------------------------------------
Message: 1
Date: Sat, 27 Aug 2011 19:38:51 +0000
From: B J <va6bmj@xxxxx.xxx>
To: AMSAT-BB@xxxxx.xxx
Subject: [amsat-bb] Re: SO67 - HO68 Status
Message-ID:
<CAP7QzkPKxMLVmDrnnXOM8JHZsP5Ch7+whJp58GrAvJ6SaQZryA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
On Sat, Aug 27, 2011 at 6:54 PM, Ted <k7trkradio@xxxxxxx.xxx> wrote:
> The SA AMSAT site states:
> "SO67 suffered another anomaly which means that all amateur activity has
> been suspended."
> I think the translation is RIP SO67
>
Maybe not. Isn't the amateur side a secondary payload?
> As for HO68, the CAMSAT web page is no longer there
> I take that as RIP HO68
>
HO-68 was a good satellite. I worked lots of new stations and grid squares,
including my first contacts in Hawaii and Europe, all in FM. I hoped to get
onto the linear transponder now that I have a rig for it but it doesn't look
likely.
73s
Bernhard VA6BMj @ DO33FL
------------------------------
Message: 2
Date: Sat, 27 Aug 2011 22:08:18 +0200
From: "Hans" <hans@xxxxxxx.xx.xx>
To: "'B J'" <va6bmj@xxxxx.xxx>, <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] Re: SO67 - HO68 Status
Message-ID: <D55E71B2D21E4FF29F087CC0876E6C2D@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
Ted
Your translation is wrong! The ground station engineers believe that they
will recover the system required to schedule amateur radio activity.
73
Hans
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of B J
Sent: 27 August 2011 09:39 PM
To: AMSAT-BB@xxxxx.xxx
Subject: [amsat-bb] Re: SO67 - HO68 Status
On Sat, Aug 27, 2011 at 6:54 PM, Ted <k7trkradio@xxxxxxx.xxx> wrote:
> The SA AMSAT site states:
> "SO67 suffered another anomaly which means that all amateur activity has
> been suspended."
> I think the translation is RIP SO67
>
Maybe not. Isn't the amateur side a secondary payload?
> As for HO68, the CAMSAT web page is no longer there
> I take that as RIP HO68
>
HO-68 was a good satellite. I worked lots of new stations and grid squares,
including my first contacts in Hawaii and Europe, all in FM. I hoped to get
onto the linear transponder now that I have a rig for it but it doesn't look
likely.
73s
Bernhard VA6BMj @ DO33FL
_______________________________________________
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: 3
Date: Sat, 27 Aug 2011 15:21:09 -0500
From: "Ronald G. Parsons" <w5rkn@xxxxx.xxx>
To: "AMSAT-BB" <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] SarPC32 and local repeater
Message-ID: <9ECA100FF777499AA34CC0CE5C0F7CA4@xxxxxxxxx>
Content-Type: text/plain; charset="UTF-8"
Since I use the same radio (Icom IC-910H) for both satellite and local
UHF/VHF repeaters, I?d like to be able to have SatPC32 automatically switch
over the radio to satellite mode when a satellite is in view, and switch
back to the repeater after LOS.
I seems it should be possible to use ?Automatic sat change ON? and have a
dummy satellite in the satellite list configured to a local repeater. When a
real satellite comes into view, SatPC32 would switch to that and when no
real satellites are in view, the dummy satellite (repeater) would become
active.
My first idea would be to have the dummy satellite in the lowest satellite
priority, and a dummy keps entry which would have the dummy satellite always
in view. However, I don?t know how to construct such a keps element.
Perhaps there is a more elegant way. Suggestions?
Ron W5RKN
------------------------------
Message: 4
Date: Sat, 27 Aug 2011 16:40:14 -0400
From: "jmfranke" <jmfranke@xxx.xxx>
To: "Ronald G. Parsons" <w5rkn@xxxxx.xxx>, "AMSAT-BB"
<AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] Re: SarPC32 and local repeater
Message-ID: <A2BDB9FE73AE41C79099D452C42FA670@xxxxxx>
Content-Type: text/plain; format=flowed; charset="utf-8";
reply-type=original
One thought would be to copy and use the keps from any geostationary
satellite visible from your location. At least the Doppler would not be
shifting.
John WA4WDL
--------------------------------------------------
From: "Ronald G. Parsons" <w5rkn@xxxxx.xxx>
Sent: Saturday, August 27, 2011 4:21 PM
To: "AMSAT-BB" <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] SarPC32 and local repeater
> Since I use the same radio (Icom IC-910H) for both satellite and local
> UHF/VHF repeaters, I?d like to be able to have SatPC32 automatically
> switch over the radio to satellite mode when a satellite is in view, and
> switch back to the repeater after LOS.
>
> I seems it should be possible to use ?Automatic sat change ON? and have a
> dummy satellite in the satellite list configured to a local repeater. When
> a real satellite comes into view, SatPC32 would switch to that and when no
> real satellites are in view, the dummy satellite (repeater) would become
> active.
>
> My first idea would be to have the dummy satellite in the lowest satellite
> priority, and a dummy keps entry which would have the dummy satellite
> always in view. However, I don?t know how to construct such a keps
> element.
>
> Perhaps there is a more elegant way. Suggestions?
>
> Ron W5RKN
> _______________________________________________
> 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: 5
Date: Sat, 27 Aug 2011 17:14:37 -0400
From: Louis McFadin <w5did@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: AMSAT-BB Digest, Vol 6, Issue 492
Message-ID: <ED59E867-9094-4EF0-BC14-9283BD8815B0@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
If the ARISSat-1 satellite goes into eclipse, and the battery has failed,
the software doesn't get to decide when to shut down. The lights are out
with no power.
On Aug 27, 2011, at 3:00 PM, amsat-bb-request@xxxxx.xxx wrote:
> Send AMSAT-BB mailing list submissions to
> amsat-bb@xxxxx.xxx
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://amsat.org/mailman/listinfo/amsat-bb
> or, via email, send a message with subject or body 'help' to
> amsat-bb-request@xxxxx.xxx
>
> You can reach the person managing the list at
> amsat-bb-owner@xxxxx.xxx
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of AMSAT-BB digest..."
>
>
> Today's Topics:
>
> 1. CM86/CM96 rare grid activation this Saturday August 27.
> (John Papay)
> 2. ARISSat-1 (Carl Rimmer)
> 3. Re: ARISSAT-1 (Clint Bradford)
> 4. Re: some exceedingly clever technology (i8cvs)
> 5. Re: ARISSat-1 (Pete MI0VAX)
> 6. Southwest Texas Grids - August 22/23 SUCCESS!
> (Clayton Coleman W5PFG)
> 7. Arissat-1 transponder LAST NIGHT OVER UK (paul robinson)
> 8. Re: ARISSat-1 (Ransom, Kenneth G. (JSC-OC)[BARRIOS TECHNOLOGY])
> 9. Re: ARISSat-1 (James McBride)
> 10. Re: ARISSat-1 (Douglas Quagliana)
> 11. SO67 - HO68 Status (Ted)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 26 Aug 2011 15:45:22 -0400
> From: John Papay <john@xxxxxx.xxx>
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] CM86/CM96 rare grid activation this Saturday
> August 27.
> Message-ID: <630032.57810.qm@xxxxxxx.xxx.xxxx.xxx.xxxxx.xxx>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
>
> Hello. K G 6 N U B/p received a positive response from his CM86 /
> CM96 grid activations last week from Santa Cruz California. To fill
> unmet demands for these grids, especially CM86, he will be traveling
> to the CM86/CM96 grid boundary this Saturday August 27th. For
> those needing cards, a SASE sent the FCC ULS listed address is
> appreciated, but not required. Expect a 3-12 month turnaround.
> He always operates with 5W or less into a hand held yagi connected
> to a full duplex radio. The operation plan is as follows:
>
> QTH: -122.0/37.0
> ------------------------------------------------------
> Object AOS (utc) LOS grid(s)
> ------------------------------------------------------
> SO-50 19:47 19:59 CM86/CM96
> AO-27 20:04 20:15 CM86/CM96
> AO-27 21:41 21:56 CM86
> AO-51 22:10 22:22 CM86/CM96
> AO-27 23:26 23:33 CM86
> AO-51 23:47 00:02 CM86
> AO-51 01:30 01:39 CM86(maybe)
>
>
> 73,
> John K8YSE
>
>
>
> ------------------------------
>
> Message: 2
> Date: Fri, 26 Aug 2011 22:59:54 -0400
> From: Carl Rimmer <cfrimmer@xxxxx.xxx>
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] ARISSat-1
> Message-ID: <4E585DAA.2020503@xxxxx.xxx>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> I was having a really good pass gpong from my NW-SE and I had copied 6
> frames of Telemetry and 5 frames of KURSK data when the bird just went
> silent. It never came back during this pass. It was the 08-27-2011
> 0241 UTC pass over Lake Erie. I am curious if anyone has heard it since
> than. That is probably the best I have copied it since day one. The
> frames where forwarded. The MET was 55' 33". Bat Voltage = 35.668; Bat
> Current = -16 ma. I've never heard it just go silent like that and not
> come back up.
>
> Carl W8KRF
>
>
> ------------------------------
>
> Message: 3
> Date: Fri, 26 Aug 2011 20:38:56 -0700
> From: Clint Bradford <clintbradford@xxx.xxx>
> To: AMSAT BB <amsat-bb@xxxxx.xxx>
> Subject: [amsat-bb] Re: ARISSAT-1
> Message-ID: <7CEFEB35-E86A-4CFC-953D-6A9087035AB1@xxx.xxx>
> Content-Type: text/plain; CHARSET=US-ASCII
>
>>> ... I was having a really good pass ... went silent ... 08-27-2011 0241
UTC pass over Lake Erie ...
>
> All the more reason for EVERYONE to report their work on the OSCAR Status
site at ...
>
> http://oscar.dcarr.org/
>
> Our reports help not only "meager" fellow hams, but also the control
operators of the various satellites
> up there!
>
> Clint, K6LCS
> http://tinyurl.com/ARISSAT1-STATUS
>
>
> ------------------------------
>
> Message: 4
> Date: Sat, 27 Aug 2011 09:13:29 +0200
> From: "i8cvs" <domenico.i8cvs@xxx.xx>
> To: <karn@xxxx.xxx>, "R Oler" <orbitjet@xxxxxxx.xxx>
> Cc: Amsat BB <amsat-bb@xxxxx.xxx>
> Subject: [amsat-bb] Re: some exceedingly clever technology
> Message-ID: <000001cc6489$5f28ac60$0401a8c0@xxxxxx>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi Phil, KA9Q
>
> What you describes using both magnetorquers ,momentum wheels
> and CCD video cameras for the attitude control system is what
> was made on AO40 but it was a big satellite and not a microsatellite.
>
> 73" de
>
> i8CVS Domenico
>
> ----- Original Message -----
> From: "Phil Karn" <karn@xxxxxxxx.xxx>
> To: "R Oler" <orbitjet@xxxxxxx.xxx>
> Cc: "Amsat BB" <amsat-bb@xxxxx.xxx>
> Sent: Friday, August 26, 2011 6:54 PM
> Subject: [amsat-bb] Re: some exceedingly clever technology
>
>
>> On 8/24/11 8:11 PM, R Oler wrote:
>>>
>>> http://onorbit.com/node/3709
>>
>> Thrusters are necessary for orbit control, but for attitude control
>> (which I think we really need) you'd *really* prefer something that
>> doesn't consume a fuel.
>>
>> These attitude control systems come in basically two types:
>> magnetorquers and reaction wheels. Magnetorquers exchange angular
>> momentum with the earth by acting on its magnetic field, but they tend
>> to be slow, imprecise and require complex control and sensing systems
>> including a magnetometer far enough from the spacecraft to get away from
>> its own magnetic fields.
>>
>> Reaction wheels come in two kinds: momentum wheels and control moment
>> gyros. Momentum wheels change speed while control moment gyros don't.
>> The latter seem much more common in spacecraft but I'd investigate both.
>> They're good for quick, accurate pointing like you'd need to keep an
>> antenna pointed down or a solar panel pointed at the sun.
>>
>> Having both a magnetorquer and a set of wheels can be advantageous as
>> the magnetorquer can be used occasionally to dump accumulated angular
>> momentum from the wheels should it build up from small external torques.
>>
>> Controlling attitude also means measuring it, and for this I keep
>> thinking about small, cheap CCD video cameras. If we could build good
>> enough sunshades we could snap pictures of star fields and look them up
>> in a database. If you can match multiple stars in an image, then a
>> single image could fix the attitude of the spacecraft. But I'd want to
>> put a camera on each surface if possible. They could also sense the sun
>> and the earth, though that's not as simple as it might seem. The sun
>> usually overloads a CCD and produces streaks while the earth is very
>> large in LEO. It might be possible to recognize the limb of the earth
>> and get better precision that way. A lot would depend on the software
>> processing these images, and it would be a challenge to write.
>>
>> -Phil, KA9Q
>>
>> _______________________________________________
>> 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: 5
> Date: Sat, 27 Aug 2011 12:33:34 +0100
> From: Pete MI0VAX <petemi0vax@xxxxx.xxx>
> To: amsat-bb@xxxxx.xxx
> Cc: cfrimmer@xxxxx.xxx
> Subject: [amsat-bb] Re: ARISSat-1
> Message-ID:
> <CANwro_OLKvppVxGBurTwYy4gVhL8NfYBddTjEw5-_YgL0vx8aw@xxxx.xxxxx.xxx>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hi Carl,
>
> I've seen this recently myself too.. On the occasions when it happened here
> over the UK, the bird "should" have been in high power mode, but after
> looking at telemetry it appears that it had switched into low power mode
> much earlier that than usual, from memory the footprint was only half in
> eclipse. Also noticed that before it cuts off that there is usually 10-15 or
> so seconds of a silent carrier. On another occasion it cut out halfway
> through a SSTV transmission - this I'm almost certain shouldn't have
> happened due to the way the firmware was written.
>
> Perhaps a bad solar panel contributing to low voltage when approaching
> eclipse? I had noticed one of the panel temps was over 75c on several
> passes.
>
> It certainly looks like there is some intermittent problems beginning to
> raise their head, lets hope it's not a steady decline in the bird's
> performance as gathering the SSTV pics, telemetry etc has been a very
> enjoyable change to the usual FM/SSB activity.
>
> 73 de Pete
>
> Mi0VAX
>
>
> On Sat, Aug 27, 2011 at 3:59 AM, Carl Rimmer <cfrimmer@xxxxx.xxx> wrote:
>> I was having a really good pass gpong from my NW-SE and I had copied 6
>> frames of Telemetry and 5 frames of KURSK data when the bird just went
>> silent. It never came back during this pass. It was the 08-27-2011 0241
>> UTC pass over Lake Erie. I am curious if anyone has heard it since than.
>> That is probably the best I have copied it since day one. The frames
> where
>> forwarded. The MET was 55' 33". Bat Voltage = 35.668; Bat Current = -16
>> ma. I've never heard it just go silent like that and not come back up.
>>
>> Carl W8KRF
>> _______________________________________________
>> 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: Sat, 27 Aug 2011 07:50:09 -0500
> From: Clayton Coleman W5PFG <kayakfishtx@xxxxx.xxx>
> To: AMSAT <amsat-bb@xxxxx.xxx>
> Subject: [amsat-bb] Southwest Texas Grids - August 22/23 SUCCESS!
> Message-ID:
> <CAPovOwcZFRpC-+eM2Cj0adF_H-viK8VjspENr5e9_WD44X2yPg@xxxx.xxxxx.xxx>
> Content-Type: text/plain; charset=ISO-8859-1
>
> I want to thank all who supported my efforts to activate DL98/DL99 on the
> Texas/Mexico border. I also made quite a few contacts from EL07 in Laredo,
> Texas. Despite two border patrol inspection stations and three border
> patrol "drive-by's" while I was operating, the boundary operation went
> smoothly. APRS coverage was fairly poor for most of the trip unless I was
> in between major metropolitan areas in the Interstate 35 corridor.
>
> My SO-50 operations weren't as smooth as on AO-27 and AO-51 because they
> were unplanned and I was working them from whatever place I was on the road
> at AOS. Sometimes it was *not* a great location.
>
> Overall I ended up making 102 contacts from grids EM00, EM01, EM02, EL07,
> EL08, EL09, DL98, and DL99. I've already uploaded these contacts to Logbook
> of the World. If you would like a paper card, please email me the QSO
> details or go the usual direct/SASE route.
>
> 73,
> Clayton
> W5PFG
> EM21
>
>
> ------------------------------
>
> Message: 7
> Date: Sat, 27 Aug 2011 15:26:30 +0100 (BST)
> From: paul robinson <pushbiker2004@xxxxx.xx.xx>
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Arissat-1 transponder LAST NIGHT OVER UK
> Message-ID:
> <1314455190.10216.YahooMailClassic@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
> Content-Type: text/plain; charset=iso-8859-1
>
> rpt 5/7 sig last night via the transponder called cq a few times heard a
EA station that was weak but didnt manage to work him.Its not easy to work
but possable. 2E1EUB
> ?
>
> ------------------------------
>
> Message: 8
> Date: Sat, 27 Aug 2011 09:31:39 -0500
> From: "Ransom, Kenneth G. (JSC-OC)[BARRIOS TECHNOLOGY]"
> <kenneth.g.ransom@xxxx.xxx>
> To: Carl Rimmer <cfrimmer@xxxxx.xxx>, "amsat-bb@xxxxx.xxxx
> <amsat-bb@xxxxx.xxx>
> Subject: [amsat-bb] Re: ARISSat-1
> Message-ID:
> <CBB2346C58D9B14983E5AEFE4B3458868EFAA9937B@xxxxxxxxx.xxx.xxxx.xxx>
> Content-Type: text/plain; charset="us-ascii"
>
> Looks like the satellite entered eclipse about that time. The solar panels
are all that is powering the satellite now.
>
> Kenneth - N5VHO
>
> ________________________________________
> From: amsat-bb-bounces@xxxxx.xxx [amsat-bb-bounces@xxxxx.xxxx On Behalf Of
Carl Rimmer [cfrimmer@xxxxx.xxxx
> Sent: Friday, August 26, 2011 9:59 PM
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] ARISSat-1
>
> I was having a really good pass gpong from my NW-SE and I had copied 6
> frames of Telemetry and 5 frames of KURSK data when the bird just went
> silent. It never came back during this pass. It was the 08-27-2011
> 0241 UTC pass over Lake Erie. I am curious if anyone has heard it since
> than. That is probably the best I have copied it since day one. The
> frames where forwarded. The MET was 55' 33". Bat Voltage = 35.668; Bat
> Current = -16 ma. I've never heard it just go silent like that and not
> come back up.
>
> Carl W8KRF
> _______________________________________________
> 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: Sat, 27 Aug 2011 22:07:31 +0800
> From: James McBride <fjamesa@xxxxxxx.xxx>
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Re: ARISSat-1
> Message-ID: <4E58FA23.5090202@xxxxxxx.xxx>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Hi all,
> I found this morning in VK6 (approx. 03:45 UTC) the MET counter said
> 21min 45 sec, which is approx. the time ARISSat-1 would have come back
> into Sunlight. Strange thing is it was on High Power - got plenty of
> telemetry frames but was discharging at a great rate of knots.. Looking
> at the data it would seem there was more discharging than charging going
> on over it's first 21 minutes. 1 panel said 45v, the others were around
> 15v so the part that was facing direct sunlight was good. I will get
> another chance perhaps in a few hours to see if it's still alive when
> not in sunlight and will try to grab some more telemetry.
>
> I have a jpg screenshot of telemetry with the position info from earlier
> if anyone would like it.
>
> 73
> James VK6FJA
>
>
> On 27/08/2011 7:33 PM, Pete MI0VAX wrote:
>> Hi Carl,
>>
>> I've seen this recently myself too.. On the occasions when it happened here
>> over the UK, the bird "should" have been in high power mode, but after
>> looking at telemetry it appears that it had switched into low power mode
>> much earlier that than usual, from memory the footprint was only half in
>> eclipse. Also noticed that before it cuts off that there is usually 10-15
or
>> so seconds of a silent carrier. On another occasion it cut out halfway
>> through a SSTV transmission - this I'm almost certain shouldn't have
>> happened due to the way the firmware was written.
>>
>> Perhaps a bad solar panel contributing to low voltage when approaching
>> eclipse? I had noticed one of the panel temps was over 75c on several
>> passes.
>>
>> It certainly looks like there is some intermittent problems beginning to
>> raise their head, lets hope it's not a steady decline in the bird's
>> performance as gathering the SSTV pics, telemetry etc has been a very
>> enjoyable change to the usual FM/SSB activity.
>>
>> 73 de Pete
>>
>> Mi0VAX
>>
>>
>> On Sat, Aug 27, 2011 at 3:59 AM, Carl Rimmer<cfrimmer@xxxxx.xxx> wrote:
>>> I was having a really good pass gpong from my NW-SE and I had copied 6
>>> frames of Telemetry and 5 frames of KURSK data when the bird just went
>>> silent. It never came back during this pass. It was the 08-27-2011 0241
>>> UTC pass over Lake Erie. I am curious if anyone has heard it since than.
>>> That is probably the best I have copied it since day one. The frames
>> where
>>> forwarded. The MET was 55' 33". Bat Voltage = 35.668; Bat Current = -16
>>> ma. I've never heard it just go silent like that and not come back up.
>>>
>>> Carl W8KRF
>>> _______________________________________________
>>> 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: Sat, 27 Aug 2011 13:22:58 -0400 (EDT)
> From: Douglas Quagliana <dquagliana@xxx.xxx>
> To: cfrimmer@xxxxx.xxxx amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Re: ARISSat-1
> Message-ID: <8CE32F5195685F9-AD0-11D97@xxxxxxxxxxxx.xxxxxx.xxx.xxx>
> Content-Type: text/plain; charset="us-ascii"
>
>
>
>
> Telemetry came into the Internet telemetry server up until 02:43:37 UTC
Aug 27. Then there's no
> further telemetry until 3:35:46 UTC.
>
> If you are receiving telemetry, please turn on the forwarding to the
Internet telemetry
> server, and also please email in your .CSV files to telemetry at
arissattlm dot org.
>
> Douglas KA2UPW/5
>
>
>
>
>
>
> -----Original Message-----
> From: Carl Rimmer <cfrimmer@xxxxx.xxx>
> To: amsat-bb <amsat-bb@xxxxx.xxx>
> Sent: Fri, Aug 26, 2011 10:09 pm
> Subject: [amsat-bb] ARISSat-1
>
>
> I was having a really good pass gpong from my NW-SE and I had copied 6
> frames of Telemetry and 5 frames of KURSK data when the bird just went
> silent. It never came back during this pass. It was the 08-27-2011
> 0241 UTC pass over Lake Erie. I am curious if anyone has heard it since
> than. That is probably the best I have copied it since day one. The
> frames where forwarded. The MET was 55' 33". Bat Voltage = 35.668; Bat
> Current = -16 ma. I've never heard it just go silent like that and not
> come back up.
>
> Carl W8KRF
>
>
>
>
>
>
> ------------------------------
>
> Message: 11
> Date: Sat, 27 Aug 2011 11:54:42 -0700
> From: "Ted" <k7trkradio@xxxxxxx.xxx>
> To: <amsat-bb@xxxxx.xxx>
> Subject: [amsat-bb] SO67 - HO68 Status
> Message-ID: <F78C6EA03BAC437DB19630942D74BBF5@xxxxxxxxxxx>
> Content-Type: text/plain; charset="us-ascii"
>
> The SA AMSAT site states:
> "SO67 suffered another anomaly which means that all amateur activity has
> been suspended."
> I think the translation is RIP SO67
> As for HO68, the CAMSAT web page is no longer there
> I take that as RIP HO68
>
> TK
> K7TRK
>
>
>
>
> ------------------------------
>
> _______________________________________________
> 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 492
> ****************************************
Lou McFadin
W5DID
ARISS US Hardware manager
------------------------------
Message: 6
Date: Sat, 27 Aug 2011 17:23:49 -0400
From: "Daniel Schultz" <n8fgv@xxx.xxx>
To: amsat-fox <amsat-fox@xxxx.xxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Second Call for Papers for 2011 Symposium
Message-ID: <297PHAVwx1776S04.1314480229@xxxxx.xxx.xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
This is the second call for papers for the 2011 AMSAT Space Symposium to be
held Friday, November 4th through Sunday, November 6th at the Wyndham San Jose
Hotel, San Jose, California. Proposals for papers, symposium presentations and
poster presentations are invited on any topic of interest to the amateur
satellite community. We request a tentative title of your presentation as soon
as possible, with final copy submitted by October 1, 2011 for inclusion in the
printed proceedings. Abstracts and papers should be sent to Dan Schultz,
N8FGV, at n8fgv@xxxxx.xxx.
------------------------------
Message: 7
Date: Sat, 27 Aug 2011 15:34:42 -0700 (PDT)
From: WILLIAMS MICHAEL <k9qho6762@xxxxxxxxx.xxx>
To: amsat-bb@xxxxx.xxxx k3szh@xxxxxxx.xxx
Subject: [amsat-bb] Apology
Message-ID:
<1314484482.43834.YahooMailClassic@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Joe (K3SZH),
I'm sorry. Will you forgive me?
Life is short, and this hobby should be enjoyed to its fullest.
73,
Mike (K9QHO)
------------------------------
Message: 8
Date: Sat, 27 Aug 2011 16:01:31 -0700
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
To: <w5did@xxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: AMSAT-BB Digest, Vol 6, Issue 492
Message-ID: <BLU133-W18205C4DE37ED67A05F6B0A9120@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Lou,
When you're going into eclipse without a battery, what difference would it
make if you could? :-)
But, this post is about a different question... As the spacecraft tumbles
in direct sunlight, I understand that there are some orientations it might
tumble through that result in not quite enough power to run everything.
First, is that correct? And, if so, what choices can the IHU make in terms
of lightening the load on the solar panels? I presume the tumble would be
slow enough that you could see the power dip coming... Can the various
downlink components, the university experiment, etc. be independently shut
down?
Greg KO6TH
> From: w5did@xxx.xxx
> Date: Sat, 27 Aug 2011 17:14:37 -0400
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Re: AMSAT-BB Digest, Vol 6, Issue 492
>
> If the ARISSat-1 satellite goes into eclipse, and the battery has failed,
the software doesn't get to decide when to shut down. The lights are out
with no power.
>
------------------------------
Message: 9
Date: Sat, 27 Aug 2011 20:31:21 -0500
From: "JoAnne Maenpaa" <k9jkm@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ANS-240 AMSAT News Service Weekly Bulletins
Message-ID: <001701cc6522$3175d100$94617300$@xxx>
Content-Type: text/plain; charset="iso-8859-1"
AMSAT NEWS SERVICE
ANS-240
ANS is a free, weekly, news and information service of AMSAT North
America, The Radio Amateur Satellite Corporation. ANS reports on the
activities of a worldwide group of Amateur Radio operators who share an
active interest in designing, building, launching and communicating
through analog and digital Amateur Radio satellites.
Please send any amateur satellite news or reports to:
ans-editor@xxxxx.xxx
In this edition:
* AO-51 Operations Update
* Time Running Out On The DARA Matching Gift Challenge
* New ARISSat-1 FM Operating Mode
* Second Call For Papers for the 2011 AMSAT Space Symposium
* Kentucky Space Consortium Announces CubeSat Workshop
* Near-Earth Asteroid Fly-by Receiving Opportunity
* UK Students Develop Cosmic Radiation Experiment
* FCC Issues Experimental License For Imaging Tests on 2M & 70cm
* Satellite Shorts From All Over
SB SAT @ AMSAT $ANS-240.01
AO-51 Operations Update
AMSAT News Service Bulletin 240.01
>From AMSAT HQ SILVER SPRING, MD.
August 28, 2011
To All RADIO AMATEURS
BID: $ANS-240.01
AO-51 Control Station, Mark Hammond, N8MH wrote a status update on
this satellite. Mark noted that since the failure of the first cell
on the six-cell battery the ground controllers have been limited to
simple commands for basic configurations.
Mark said that ground control stations have evolved basic control
and management techniques of AO-51 which allow them to set power
levels manually, change uplinks/downlinks. Additional features such
as telemetry collection/storage, and the BBS are not functional
at this time. If the satellite resets during eclipse these basic
functions must be restored manually by a ground station.
Ground stations have discovered there is a second cell in the bat-
tery showing problems. Mark noted, "We think it will be the next cell
to go with the probable result that our limited manual mode of oper-
ation probably will no longer be an option, and the mission might be
considered over."
AO-51 is currently transmitting on:
Downlink: 435.150 MHz FM (LHCP) and using a
Uplink: 145.880 MHz FM
The power level is just under 1 watt (about 980 mW). Controllers
expect to keep this configuration until further notice.
Keep up with the latest AO-51 Control Team News on-line at:
http://www.amsat.org/amsat-new/echo/CTNews.php
The current scenario of AO-51 is one reason we need to keep moving
AMSAT and satellite development/building/launching moving forward!!
We have learned a lot already with ARISSat-1, and FOX looks promising.
AMSAT needs the support of its users now more than ever!
[ANS thanks AO-51 Control Station, Mark Hammond, N8MH for the
above information]
SB SAT @ AMSAT $ANS-240.02
Time Running Out On The DARA Matching Gift Challenge
AMSAT News Service Bulletin 240.02
>From AMSAT HQ SILVER SPRING, MD.
August 28, 2011
To All RADIO AMATEURS
BID: $ANS-240.02
Donate to AMSAT and DARA will contribute matching funds. The Dayton
Amateur Radio Association (DARA) fund raising challenge for AMSAT
continues until September 1, 2011. DARA will match $1.00 for every
$3.00 donated up to $5,000.
Please consider making a donation to AMSAT and have your effort
multiplied. We appreciate DARA's support for AMSAT! Your donation
will support our "Getting AMSAT Back Into Space" campaign by pro-
viding needed funds for AMSAT Project Fox-1 Cubesats which will
feature a 2M to 70cm FM transponder matching the performance of
AO-51.
You can donate several ways:
+ On-line at the AMSAT Store:
http://www.amsat-na.com/store/donation.php
+ You may click on the donation widget on our http://www.amsat.org
web page.
+ You may call Martha at the AMSAT Office:
From the US call toll free at: (888) 322-6728
From all other locations call: (301) 589-6062
and you can send a fax to: (301) 608-3410
+ You can send donations by postal mail to:
AMSAT-NA
850 Sligo Ave #600
Silver Spring, MD, 20910
[ANS thanks AMSAT Headquarters for the above information]
SB SAT @ AMSAT $ANS-240.03
New ARISSat-1 FM Operating Mode
AMSAT News Service Bulletin 240.03
>From AMSAT HQ SILVER SPRING, MD.
August 28, 2011
To All RADIO AMATEURS
BID: $ANS-240.03
ARISSat-1/KEDR Project Manager Gould Smith, WA4SXM reported on this
week's status of the satellite. Gould noted that while the battery
performed as expected during the first week of operation. Lower volt-
ages during eclipse began to show up in the telemetry on 10 Aug 2011.
The voltages during eclipse have continued to decline causing the
satellite to reset and occasionally go into Emergency power mode.
Gould explained the changes noted on the 145.950 MHz FM downlink that
were heard this week:
+ A Male voice for the spoken telemetry means that the female voice
files on the SD card could not be read.
+ If no greetings are transmitted this means that these message
stored on the SD card could not be read.
+ A short Mission-Elapsed-Time (minutes to hours) has been noted
while the satellite was still in a long period of sunlight indi-
cating that satellite must have reset during sunlight.
Reports received on later orbits indicated that the female voiced
telemetry and the greetings messages had returned to normal operation
once the solar panels had recharged the battery.
After each reset the satellite MET (Mission Elapsed Timer) goes to
000, waits during the 15 minute TX delay, the power management soft-
ware checks the current voltage and power values and determines what
power mode to operate the satellite. The power mode is re-determined
at fixed intervals, especially during illuminated periods to provide
the most transmitted signals while protecting the battery.
High power mode provides continuous transmission when sunlight is
charging the battery. If the satellite has entered low power mode
it will transmit for 40 seconds and remain idle for 2 minutes when
in eclipse, or when the battery voltage is low.
The ARISSat-1 team is closely monitoring the situation and is pleased
with how well the power management software is controlling the battery
usage to prolong the lifetime of the battery and the satellite as much
as possible.
Please send your BPSK telemetry into the server arissattlm.org.
[ANS thanks ARISSat-1/KEDR Project Manager Gould Smith, WA4SXM for the
above information]
SB SAT @ AMSAT $ANS-240.04
Second Call For Papers for the 2011 AMSAT Space Symposium
AMSAT News Service Bulletin 240.04
>From AMSAT HQ SILVER SPRING, MD.
August 28, 2011
To All RADIO AMATEURS
BID: $ANS-240.04
This is the second call for papers for the 2011 AMSAT Space Symposium
to be held Friday, November 4th through Sunday, November 6th at the
Wyndham San Jose Hotel, San Jose, California.
Proposals for papers, symposium presentations and poster presentations
are invited on any topic of interest to the amateur satellite community.
We request a tentative title of your presentation as soon as possible,
with final copy submitted by October 1, 2011 for inclusion in the
printed proceedings.
Abstracts and papers should be sent to Dan Schultz, N8FGV, at:
n8fgv@xxxxx.xxx.
[ANS thanks Dan Schultz, N8FGV for the above information]
SB SAT @ AMSAT $ANS-240.05
Kentucky Space Consortium Announces CubeSat Workshop
AMSAT News Service Bulletin 240.05
>From AMSAT HQ SILVER SPRING, MD.
August 28, 2011
To All RADIO AMATEURS
BID: $ANS-240.05
Kentucky Space, a consortium of Kentucky-based colleges and univers-
ities and Make Magazine announced the First annual hackerSPACE Work-
shop focused on CubeSat class satellites to take place in Lexington,
Kentucky, November 11-12.
While learning how to design and build your own fully functional
orbital spacecraft, you will work with a team of space professionals
and engineers led by Radio Amateur Bob Twiggs, W7RMT. Dr. Twiggs is
Emeritus professor and former director of the Space Systems Develop-
ment Lab at Stanford University, now professor at Morehead State Uni-
versity and also with Kentucky Space. He is credited with inventing
both the CubeSat and FemtoSat spacecraft, which are now helping to
revolutionize space, putting it within reach of more people than
ever.
At this hands-on workshop you?ll learn about the design and assembly
of small satellites, what kinds of systems are common to all space-
crafts, possible satellite 'apps', the kinds of tests your craft will
have to pass before it can be flown, raising funds to support your
space project and possible launch opportunities.
Further details at: http://www.kentuckyspace.com/
[ANS thanks Kentucky Space for the above information]
SB SAT @ AMSAT $ANS-240.06
Near-Earth Asteroid Fly-by Receiving Opportunity
AMSAT News Service Bulletin 240.06
>From AMSAT HQ SILVER SPRING, MD.
August 28, 2011
To All RADIO AMATEURS
BID: $ANS-240.06
The 400 meter diameter near-Earth asteroid 2005 YU55 will be making
a 0.85 lunar distance flyby of Earth on November 8. Michael Busch at
the UCLA Department of Earth and Space Sciences notes this may an
opportunity for amateur satellite operators to observe the fly-by.
UCLA will be conducting an extensive campaign of radar observations
with the Arecibo Observatory, the Deep Space Network Goldstone facil-
ity, and the Green Bank Telescope and the Very Long Baseline Array.
Because YU55 will be so close to Earth, its radar echo will be
detectable with even small antennas (~1 m^2). YU55's echo will be
a slowly drifting signal with a bandwidth of ~1 Hz within a few kHz
of 2380 MHz or 8560 MHz.
This will present amateur radio operators an opportunity to receive
the radar reflections off of the asteroid because of the big dish,
big signals originating from Arecibo and Goldstone.
On November 8, 2011, 19:15 - 19:30 UTC, Arecibo will be transmitting
a continuous wave tuned to put the asteroid's echo at a constant
2380.000000 MHz at the Green Bank Telescope. Observers elsewhere on
Earth will see the echo within 2 kHz of 2380 MHz, Doppler-shifted by
the Earth's rotation. It will be slowly drifting in frequency and
have a bandwidth of ~0.6 Hz.
On November 9, 2011, 01:30 - 02:00 UTC, the Goldstone Deep Space Net-
work facility will be be transmitting a continuous wave tuned to put
the asteroid's echo a constant 8560.000000 MHz at a second antenna at
the Goldstone site. Other observers may see the echo shifted by as
much as 6 kHz, and it will have a bandwidth of ~2 Hz.
Initial information can be found on-line at:
http://echo.jpl.nasa.gov/asteroids/2005YU55/2005YU55_planning.html
More details will be announced as the fly-by date approaches.
[ANS thanks Michael Busch, UCLA Department of Earth and Space
Sciences for the above information]
SB SAT @ AMSAT $ANS-240.07
UK Students Develop Cosmic Radiation Experiment
AMSAT News Service Bulletin 240.07
>From AMSAT HQ SILVER SPRING, MD.
August 28, 2011
To All RADIO AMATEURS
BID: $ANS-240.07
The Times newspaper reported on an experiment developed by students
in Canterbury that will soon fly in space. They have also teamed up
with students in Uganda.
Students at the Simon Langton Grammar school, led by Head of Physics,
Dr. Becky Parker are developing a Cosmic Radiation experiment (LUCID)
that will be part of the TechDemoSat-1 satellite. It is based around
a Cosmic Ray detector chip from CERN and the school raised ?60,000 to
fund the experiment.
The school say that Dr Obote College in Uganda will soon be working
with one of the LUCID cosmic ray detectors and Ugandan students will
play an equal part with Langton students in collecting and analysing
data on cosmic ray activity as part of an international experiment.
As part of the project Dr. Becky Parker is looking for money to install
LUCID equipment in schools across the Britsh Isles and Europe providing
ground-based data in a way that will involve hundreds of thousands of
students.
TechDemoSat-1 (TDS-1) is developed by Surrey Satellite Technology Ltd
(SSTL). The TechDemoSat will function as an ?in-orbit test facility?
for the UK Space Agency once launched, qualifying onboard payloads as
well as UK satellite software.
At around one meter cubed and a mass of 150kg, TechDemoSat (TDS-1)
will carry no less than eight payloads. Additional features proposed
for this mission include:
+ An enhanced on board computer giving greater ability to conduct
software experiments remotely.
+ A new battery charge regulator and newly qualified cell types on
two of the solar panels.
+ A propulsion system will see a smaller tank size trialled with a new
high performance resistojet thruster.
+ New sun sensors in the Altitude and Orbital Control System.
+ Standard CANbus interface.
More details can be found on-line at:
http://tinyurl.com/3nvp8zn (sstl.co.uk)
[ANS thanks the Southgate ARC site for the above information]
SB SAT @ AMSAT $ANS-240.08
FCC Issues Experimental License For Imaging Tests on 2M & 70cm
AMSAT News Service Bulletin 240.08
>From AMSAT HQ SILVER SPRING, MD.
August 28, 2011
To All RADIO AMATEURS
BID: $ANS-240.08
Amateur Radio Newsline Report 1776, dated August 26, 2011, carried
a report that the FCC has issued a new experimental license with the
call letters WF2XSP to one James Cutler to operate in 144 to 146 MHz
and 437 to 439 MHz spectrum. This, for testing an image processing
algorithm that will be used on a future space flight mobile, Low
Earth Orbit operations ranging from 450 to 820 kilometers in altitude.
The FCC announcement made no other reference to the nature of Cutler's
experimentation nor why he requested to do so in the amateur 2 meter
and 70 centimeter bands. QRZ.com lists six radio amateurs by the name
of James Cutler, but its unknown if any of them are the same James
Cutler who has obtained the Experimental License from the FCC.
[ANS thanks Amateur Radio Newsline Report for the above information]
SB SAT @ AMSAT $ANS-240.09
Satellite Shorts From All Over
AMSAT News Service Bulletin 240.09
>From AMSAT HQ SILVER SPRING, MD.
August 28, 2011
To All RADIO AMATEURS
BID: $ANS-240.09
+ Bryce, KB1LQC has posted a video showing reception of the ARISSat-1
amateur radio satellite using a handheld arrow yagi antenna:
http://tinyurl.com/42fbrqe (Southgate ARC)
+ Mario Lorenz, DL5MLO from AMSAT-DL gave a presentation, in English,
at the Hacker Space Program track at the Chaos Communication Camp
2011 which ran from August 10-14 at Finowfurt near Berlin, Germany.
A video of Mario's presentation, "From OSCAR 1 to Mars and Beyond",
can be seen at: http://tinyurl.com/445w7re
+ If a tower falls and no one is near does it still make a sound?
Find out when you view a video of the demolition of the 126 meter
tower at the Berom?nster national transmission center. The 216
meter tower at this site remains standing as part of protected
monument status.
+ NASA STEREO spacecraft captured a billion-tons cloud of solar plasma
from a Coronal Mass Ejection event as it engulfed the Earth:
http://www.nasa.gov/mission_pages/stereo/news/solarstorm-tracking.html
+ We have software defined radios ... are you ready for a software
defined antenna tuner (of sorts)? A series capacitor, parallel induc-
tor T-network radio frequency impedance match written in JAVA that
runs on a web page can be tuned at:
http://fermi.la.asu.edu/w9cf/tuner/tuner.html
+ NPR has posted a video, "The Astronaut's Guide To Life In Space" at:
http://vimeo.com/27738605
+ The dates for the next Hudson Valley Satcom nets are September 1,
September 15, and September 29 at 8:00 PM Eastern Daylight Time
(UTC - 4). You can tune in via the 146.970 MHz Mt. Beacon repeater,
PL 100.0 or via EchoLink on the N2EYH-L node. More info is available
at: http://www.hvsatcom.org (Stu, WA2BSS)
[ANS thanks everyone for the above information]
In addition to regular membership, AMSAT offers membership in the
President's Club. Members of the President's Club, as sustaining
donors to AMSAT Project Funds, will be eligible to receive addi-
tional benefits. Application forms are available from the AMSAT
Office. And with that please keep in mind the two ham radio bro-
thers called William and Wayne. Will was a CW operator and Wayne
was a phone operator. Hams noticed they always went around together.
If William went to the CW band, Wayne would be in the shack tuning
the phone band. One ham noticed they were so inseparable. It was
easy to explain, because where there's a Will there's a Wayne!
73,
This week's ANS Editor,
JoAnne Maenpaa, K9JKM
K9JKM at amsat dot org
------------------------------
_______________________________________________
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 493
****************************************
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