So much for the (convenient) 24 hours timer theory proffered in response to my previous mails regarding the timing of AO-7.
This is the 3rd consequtive day the 24 hour timer is *NOT* playing ball.
05/06 Septembert 2007.
TIME. ORBIT. MODE.
23:46 50133 B 23:51 50133 A 01:35 50135 A 01:36 50134 B 01:44 40135 A
I have received confirmation mails from AJ9K and K3SZH that their log entries *ARE* correct.
As you Gentlemen on that side of the pond are wont to say ... "go figure!".
Incidentally, the mode changes spell "baa ba" ... it couldn't be that AO-t thinks we're a veritable bunch (flock) of sheep?.
Just a thought.
73 John. [email protected]
John, It's not too hard to figure out. The satellite is not yet in full sun. Look at the footprint of the sat and the illuminated area of the earth at 16:57 and 18:50 today. The lines don't touch. No sun=no power=timer not working. Go figure...
73, Drew KO4MA
----- Original Message ----- From: "John Hackett" [email protected] To: "[email protected]" [email protected] Cc: [email protected]; [email protected]; [email protected]; [email protected] Sent: Thursday, September 06, 2007 3:59 AM Subject: [amsat-bb] Baa ba little lamb.
So much for the (convenient) 24 hours timer theory proffered in response to my previous mails regarding the timing of AO-7.
This is the 3rd consequtive day the 24 hour timer is *NOT* playing ball.
05/06 Septembert 2007.
TIME. ORBIT. MODE.
23:46 50133 B 23:51 50133 A 01:35 50135 A 01:36 50134 B 01:44 40135 A
I have received confirmation mails from AJ9K and K3SZH that their log entries *ARE* correct.
As you Gentlemen on that side of the pond are wont to say ... "go figure!".
Incidentally, the mode changes spell "baa ba" ... it couldn't be that AO-t thinks we're a veritable bunch (flock) of sheep?.
Just a thought.
73 John. [email protected]
Sent via [email protected]. 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
Hi John, I wouldn't get too excited yet, one are you sure its in full sun yet? and two anytime someone nails it hard with high power you stand the chance of dropping the voltage low enough to cause a reset to the sat, so I would wait a little longer myself to see how this plays out...
73 Kevin wa6fwf
----- Original Message ----- From: "John Hackett" [email protected] To: "[email protected]" [email protected] Cc: [email protected]; [email protected]; [email protected]; [email protected] Sent: Thursday, September 06, 2007 12:59 AM Subject: [amsat-bb] Baa ba little lamb.
So much for the (convenient) 24 hours timer theory proffered in response to my previous mails regarding the timing of AO-7.
This is the 3rd consequtive day the 24 hour timer is *NOT* playing ball.
05/06 Septembert 2007.
TIME. ORBIT. MODE.
23:46 50133 B 23:51 50133 A 01:35 50135 A 01:36 50134 B 01:44 40135 A
I have received confirmation mails from AJ9K and K3SZH that their log entries *ARE* correct.
As you Gentlemen on that side of the pond are wont to say ... "go figure!".
Incidentally, the mode changes spell "baa ba" ... it couldn't be that AO-t thinks we're a veritable bunch (flock) of sheep?.
Just a thought.
73 John. [email protected]
Sent via [email protected]. 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
Kevin, Thank you for your response.
Excited? ... about what? ... the events are all perfectly logical given the circumstances. My mails were/are aimed at the potential newcomer and are a direct response to those mails I receive either flaming me for my earlier comments ...( who knows! why) ... or questioning the validity of the data in the log.
At the moment I'm more concerned with discussing with Jan King which of the relays are of the 'latching' type which, as I'm sure you're aware, *may* play a part in the apparent on/off/on/off period of little or no illumination.
(latch and hold vis-a-vis return to original state on power off).
As I have stated several times ... this is SPECULATION on my part.
A couple of 31 year old grotty relays (of any sort) doesn't excite me. It's merely a discussion point.
73 John. [email protected] ....................................................................................
From: [email protected] To: [email protected] Date: Thu, 6 Sep 2007 05:53:25 -0700 Subject: [amsat-bb] Re: Baa ba little lamb.
Hi John, I wouldn't get too excited yet, one are you sure its in full sun yet? and two anytime someone nails it hard with high power you stand the chance of dropping the voltage low enough to cause a reset to the sat, so I would wait a little longer myself to see how this plays out...
73 Kevin wa6fwf
----- Original Message ----- From: "John Hackett" [email protected] To: "[email protected]" [email protected] Cc: [email protected]; [email protected]; [email protected]; [email protected] Sent: Thursday, September 06, 2007 12:59 AM Subject: [amsat-bb] Baa ba little lamb.
So much for the (convenient) 24 hours timer theory proffered in response to my previous mails regarding the timing of AO-7.
This is the 3rd consequtive day the 24 hour timer is *NOT* playing ball.
05/06 Septembert 2007.
TIME. ORBIT. MODE.
23:46 50133 B 23:51 50133 A 01:35 50135 A 01:36 50134 B 01:44 40135 A
I have received confirmation mails from AJ9K and K3SZH that their log entries *ARE* correct.
As you Gentlemen on that side of the pond are wont to say ... "go figure!".
Incidentally, the mode changes spell "baa ba" ... it couldn't be that AO-t thinks we're a veritable bunch (flock) of sheep?.
Just a thought.
73 John. [email protected]
Sent via [email protected]. 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 [email protected]. 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
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John, Are you sure it's not because there is now some eclipse time that is taking the bird down? It only takes a few seconds without a battery and the timer will be reset or come up random (I think it resets, as I recall). The way the orbit of the Earth around the sun works, the minimum eclipse duration for sun sync orbits should be on about February 10 and the maximum eclipse should be on about June 1. The orbit has drifted so far in the sunward direction (toward a 6 AM - 6 PM ascending node) that there may be no eclipse at all now (which is good) but, you would expect to have this problem you are describing more like in June than in September if it is due to eclipse. Curious! I suppose the timer could have failed but, it's funny to think that it would fail after 31 years and other stuff would not have. There is nothing special about those two CMOS gates that would make that circuit any more prone to failure than any other that is still working. I'd rather suspect something with the power system driven by orbit changes. One power glitch would reset the timer. Jan
_____
From: John Hackett [mailto:[email protected]] Sent: Thursday, 6 September 2007 9:00 AM To: [email protected] Cc: [email protected]; [email protected]; [email protected]; [email protected]; [email protected] Subject: Baa ba little lamb.
So much for the (convenient) 24 hours timer theory proffered in response to my previous mails regarding the timing of AO-7.
This is the 3rd consequtive day the 24 hour timer is *NOT* playing ball.
05/06 Septembert 2007.
TIME. ORBIT. MODE.
23:46 50133 B 23:51 50133 A 01:35 50135 A 01:36 50134 B 01:44 40135 A
I have received confirmation mails from AJ9K and K3SZH that their log entries *ARE* correct.
As you Gentlemen on that side of the pond are wont to say ... "go figure!".
Incidentally, the mode changes spell "baa ba" ... it couldn't be that AO-t thinks we're a veritable bunch (flock) of sheep?.
Just a thought.
73 John. [email protected]
Jan, That's precisely the conclusion I came to ... though I'm being e-mailed some wierd and wonderful 'theories' ... everything from the amount of illumination to the colour of my underpants on the days in question.
One of the problems is of course finding precise eclipse software (that is agreement with other softeware). The "trick" is to use three different ones and bat for an average.
(very! scientific ... he he he).
I've made an application for the documentation you mentioned but whether I'll manage to get my grubby little hands on it is another matter. I'll keep you posted.
In the words of the Wallies, Good on yer' mate, no worries!.
73 John. [email protected]
From: [email protected] To: [email protected]; [email protected] CC: [email protected]; [email protected]; [email protected]; [email protected] Subject: RE: Baa ba little lamb. Date: Fri, 7 Sep 2007 10:11:55 +0100
John,
Are you sure it’s not because there is now some eclipse time that is taking the bird down? It only takes a few seconds without a battery and the timer will be reset or come up random (I think it resets, as I recall). The way the orbit of the Earth around the sun works, the minimum eclipse duration for sun sync orbits should be on about February 10 and the maximum eclipse should be on about June 1. The orbit has drifted so far in the sunward direction (toward a 6 AM – 6 PM ascending node) that there may be no eclipse at all now (which is good) but, you would expect to have this problem you are describing more like in June than in September if it is due to eclipse. Curious! I suppose the timer could have failed but, it’s funny to think that it would fail after 31 years and other stuff would not have. There is nothing special about those two CMOS gates that would make that circuit any more prone to failure than any other that is still working. I’d rather suspect something with the power system driven by orbit changes. One power glitch would reset the timer.
Jan
From: John Hackett [mailto:[email protected]]
Sent: Thursday, 6 September 2007 9:00 AM
Cc: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]
Subject: Baa ba little lamb.
So much for the (convenient) 24 hours timer theory proffered in response to my previous mails regarding the timing of AO-7.
This is the 3rd consequtive day the 24 hour timer is *NOT* playing ball.
05/06 Septembert 2007.
TIME. ORBIT. MODE.
23:46 50133 B
23:51 50133 A
01:35 50135 A
01:36 50134 B
01:44 40135 A
I have received confirmation mails from AJ9K and K3SZH that
their log entries *ARE* correct.
As you Gentlemen on that side of the pond are wont to say ...
"go figure!".
Incidentally, the mode changes spell "baa ba" ... it couldn't be that AO-t thinks we're a veritable bunch (flock) of sheep?.
Just a thought.
73 John. [email protected]
participants (5)
-
Andrew Glasbrenner -
Jan A. King -
John Hackett -
john hackett -
wa6fwf