April Fools.
and I started digging out my S band converters
----- Original Message -----
From: "Vince Fiscus, KB7ADL" [email protected] To: "amsat-bb" [email protected] Sent: Saturday, April 1, 2017 9:27:53 AM Subject: [amsat-bb] Alert! AO-40 is working again!
April Fools.
_______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
On 04/01/17 12:11, Bob- W7LRD wrote:
and I started digging out my S band converters
Does anyone know if the TLE used by heavens-above is current for AO-40?
http://www.heavens-above.com/orbit.aspx?satid=26609
I understand that it is still dead in its orbit, but it might be a useful task to have an otherwise-idle SatNOGS rotator, antenna, and SDR watch it for signs of life.
Thanks!
--- Zach N0ZGO
It gives the Epoch for the Keps as:
Epoch (UTC): 21 September 2017 01:11:23
So that would be a yes.
73s,
Alan WA4SCA
<-----Original Message----- <From: AMSAT-BB [mailto:[email protected]] On Behalf Of Zach <Metzinger <Sent: Thursday, September 21, 2017 17:19 PM <To: [email protected] <Subject: [amsat-bb] AO-40 orbital elements < <On 04/01/17 12:11, Bob- W7LRD wrote: <> and I started digging out my S band converters < <Does anyone know if the TLE used by heavens-above is current for AO-40? < <http://www.heavens-above.com/orbit.aspx?satid=26609 < <I understand that it is still dead in its orbit, but it might be a <useful task to have an otherwise-idle SatNOGS rotator, antenna, and SDR <watch it for signs of life. < <Thanks! < <--- Zach <N0ZGO <_______________________________________________ <Sent via [email protected]. AMSAT-NA makes this open forum available <to all interested persons worldwide without requiring membership. Opinions <expressed <are solely those of the author, and do not reflect the official views of AMSAT- <NA. <Not an AMSAT-NA member? Join now to support the amateur satellite <program! <Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
I was thinking of this a while back, has a command station attempted to contact it recently?
Unlike AO-7 my understanding is that it will not just 'wake up' and start beaconing as the transmitter (either V or U) that was that failsafe transmitter is non-functional.
So without intervention to turn on a S band TX if a cell was to open up, it'd just sit their quietly. Is that a correct understanding?
Ryan, NF0T
On Thu, Sep 21, 2017 at 5:35 PM, Alan [email protected] wrote:
It gives the Epoch for the Keps as:
Epoch (UTC): 21 September 2017 01:11:23
So that would be a yes.
73s,
Alan WA4SCA
<-----Original Message----- <From: AMSAT-BB [mailto:[email protected]] On Behalf Of Zach <Metzinger <Sent: Thursday, September 21, 2017 17:19 PM <To: [email protected] <Subject: [amsat-bb] AO-40 orbital elements < <On 04/01/17 12:11, Bob- W7LRD wrote: <> and I started digging out my S band converters < <Does anyone know if the TLE used by heavens-above is current for AO-40? < <http://www.heavens-above.com/orbit.aspx?satid=26609 < <I understand that it is still dead in its orbit, but it might be a <useful task to have an otherwise-idle SatNOGS rotator, antenna, and SDR <watch it for signs of life. < <Thanks! < <--- Zach <N0ZGO <_______________________________________________ <Sent via [email protected]. AMSAT-NA makes this open forum available <to all interested persons worldwide without requiring membership. Opinions <expressed <are solely those of the author, and do not reflect the official views of AMSAT- <NA. <Not an AMSAT-NA member? Join now to support the amateur satellite <program! <Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
I’m not the expert but it is my understanding there was possible an explosion or something similar that crippled it.
Chad
Sent from my iPhone
On Sep 22, 2017, at 1:54 PM, Ryan Butler [email protected] wrote:
I was thinking of this a while back, has a command station attempted to contact it recently?
Unlike AO-7 my understanding is that it will not just 'wake up' and start beaconing as the transmitter (either V or U) that was that failsafe transmitter is non-functional.
So without intervention to turn on a S band TX if a cell was to open up, it'd just sit their quietly. Is that a correct understanding?
Ryan, NF0T
On Thu, Sep 21, 2017 at 5:35 PM, Alan [email protected] wrote:
It gives the Epoch for the Keps as:
Epoch (UTC): 21 September 2017 01:11:23
So that would be a yes.
73s,
Alan WA4SCA
<-----Original Message----- <From: AMSAT-BB [mailto:[email protected]] On Behalf Of Zach <Metzinger <Sent: Thursday, September 21, 2017 17:19 PM <To: [email protected] <Subject: [amsat-bb] AO-40 orbital elements < <On 04/01/17 12:11, Bob- W7LRD wrote: <> and I started digging out my S band converters < <Does anyone know if the TLE used by heavens-above is current for AO-40? < <http://www.heavens-above.com/orbit.aspx?satid=26609 < <I understand that it is still dead in its orbit, but it might be a <useful task to have an otherwise-idle SatNOGS rotator, antenna, and SDR <watch it for signs of life. < <Thanks! < <--- Zach <N0ZGO <_______________________________________________ <Sent via [email protected]. AMSAT-NA makes this open forum available <to all interested persons worldwide without requiring membership. Opinions <expressed <are solely those of the author, and do not reflect the official views of AMSAT- <NA. <Not an AMSAT-NA member? Join now to support the amateur satellite <program! <Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
On 09/22/17 14:17, Chad Phillips wrote:
I’m not the expert but it is my understanding there was possible an explosion or something similar that crippled it.
Chad,
You are correct: The working hypothesis is that an explosion damaged the main battery, which failed into a shorted condition.
https://www.amsat-dl.org/journal/adlj-p3d.htm
As we've seen with AO-7, it is possible that the battery could go from short to open in the future. Might as well be ready for the day that happens!
--- Zach N0ZGO
Totally agree. It would be great to even hear a blip from it.
chad
On Sep 22, 2017, at 2:51 PM, Zach Metzinger [email protected] wrote:
On 09/22/17 14:17, Chad Phillips wrote:
I’m not the expert but it is my understanding there was possible an explosion or something similar that crippled it.
Chad,
You are correct: The working hypothesis is that an explosion damaged the main battery, which failed into a shorted condition.
https://www.amsat-dl.org/journal/adlj-p3d.htm
As we've seen with AO-7, it is possible that the battery could go from short to open in the future. Might as well be ready for the day that happens!
--- Zach N0ZGO
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
W4SM was kind enough to provide the following information:
The most you could hope for would be a carrier on the S2 middle beacon frequency, which I can’t recall off the top of my head, but I think it was about 2401.3 +/- MHz. All the other transmitters were dead. Given how many times AO-40 has gone through the radiation belts on its Molyniya orbit, I would doubt that the IHU would be functional at this point.
So, it may, someday, have power, but it may not have any brains to do much with that. We can still hope!
A great technical article about the IHU-2 onboard AO-40 is located at http://www.amsat.org/articles/g3ruh/124.html, and dovetails into a presentation that our little AMSAT ASCENT group will be making at the Symposium. See ya there!
--- Zach N0ZGO
Am I wrong to believe AO-10 would be more likely?
73,
Joe kk0sd
________________________________ From: AMSAT-BB [email protected] on behalf of Zach Metzinger [email protected] Sent: Wednesday, September 27, 2017 3:02 PM To: amsat-bb Subject: Re: [amsat-bb] AO-40 orbital elements
W4SM was kind enough to provide the following information:
The most you could hope for would be a carrier on the S2 middle beacon frequency, which I can’t recall off the top of my head, but I think it was about 2401.3 +/- MHz. All the other transmitters were dead. Given how many times AO-40 has gone through the radiation belts on its Molyniya orbit, I would doubt that the IHU would be functional at this point.
So, it may, someday, have power, but it may not have any brains to do much with that. We can still hope!
A great technical article about the IHU-2 onboard AO-40 is located at http://www.amsat.org/articles/g3ruh/124.html, and dovetails into a The Experimental IHU-2 Aboard P3D - AMSAThttp://www.amsat.org/articles/g3ruh/124.html www.amsat.org Documents the design and development of an prototype spacecraft flight computer based on the Intel/Digital SA-1100 StrongARM 133 MHz RISC microprocessor.
presentation that our little AMSAT ASCENT group will be making at the Symposium. See ya there!
--- Zach N0ZGO
_______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb AMSAT-BB Info Pagehttp://www.amsat.org/mailman/listinfo/amsat-bb www.amsat.org To see the collection of prior postings to the list, visit the AMSAT-BB Archives. Using AMSAT-BB: To post a message to all the list members, send ...
On 4/1/2017 09:27, Vince Fiscus, KB7ADL wrote:
April Fools.
I saw the subject and my heart paused, and then I remembered the date!
NOT FUNNY AT ALL !!!!!!!!!!!!!!!!!!!!
---------------------------- Original Message ----------------------------
Subject: Re: [amsat-bb] Alert! AO-40 is working again!
From: "Jim Walls" [email protected]
Date: Sat, April 1, 2017 3:29 pm
--------------------------------------------------------------------------
On 4/1/2017 09:27, Vince Fiscus, KB7ADL wrote:
April Fools.
I saw the subject and my heart paused, and then I remembered the date!
--
73
Jim Walls - K6CCC
Ofc: 818-548-4804
AMSAT Member 32537 - WSWSS Member 395
Sent via [email protected]. AMSAT-NA makes this open forum available
to all interested persons worldwide without requiring membership. Opinions expressed
are solely those of the author, and do not reflect the official views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
participants (10)
-
Alan -
Bob- W7LRD -
Chad Phillips -
Chad Phillips KG0MW
-
Gary -
Jim Walls -
jim＠beeson.cc -
Ryan Butler -
Vince Fiscus, KB7ADL -
Zach Metzinger