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CX2SA > SATDIG 15.10.09 04:02l 842 Lines 28371 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. L/U repeater back on (Andrew Glasbrenner)
2. Tucson (AZ) hamfest on Saturday, 17 October
(Patrick STODDARD (WD9EWK/VA7EWK))
3. Tucson (AZ) hamfest - correction on the start time
(Patrick STODDARD (WD9EWK/VA7EWK))
4. Re: Can we get them to fix AO-40 first then? (Larry)
5. Re: Icom R-75 Like New in the Box (David Wing)
6. Re: Let's Go! (Vince Fiscus, KB7ADL)
7. Fresno CA Hamfest to have satellite talks 10/17
(w6zkh@xxxxxxx.xxxx
8. Re: KLM 2M-14C...waterproof the polarity switch?
(Franklin Antonio)
9. Re: Can we get them to fix AO-40 first then? (G0MRF@xxx.xxxx
10. Re: L/U repeater back on (David - KG4ZLB)
11. Re: Icom R-75 Like New in the Box (Jack K.)
12. Re: LVB Tracker kit (Jean-Fran?ois M?nard)
13. Re: Can we get them to fix AO-40 first then? (Rocky Jones)
14. Re: Icom R-75 Like New in the Box (Jeff Yanko)
15. Re: Can we get them to fix AO-40 first then? (Larry)
16. Sumbandilasat update posted (Mark L. Hammond)
17. Re: Can we get them to fix AO-40 first then? (Michael Tondee)
----------------------------------------------------------------------
Message: 1
Date: Wed, 14 Oct 2009 18:28:07 -0400
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Subject: [amsat-bb] L/U repeater back on
To: Amsat-BB <amsat-bb@xxxxx.xxx>, kc9elu@xxxxx.xxxx ve3npc@xxxxx.xxx
Message-ID: <4AD65077.8040803@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
L/U repeater is back on now. Sorry about switching back and forth twice,
I had to go back and fix something. 435.150 is at 450mw, and 435.300 is
at 630mw. Friday morning we'll probably switch back to digital for a
pass, then to JOTA configuration that evening.
73, Drew KO4MA
------------------------------
Message: 2
Date: Wed, 14 Oct 2009 15:30:14 -0700 (PDT)
From: "Patrick STODDARD \(WD9EWK/VA7EWK\)" <amsat-bb@xxxxxx.xxx>
Subject: [amsat-bb] Tucson (AZ) hamfest on Saturday, 17 October
To: amsat-bb@xxxxx.xxx
Message-ID: <526976.92706.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Hi!
On Saturday (17 October), I will have an AMSAT table at the Old
Pueblo Radio Club's annual hamfest in Tucson AZ. The hamfest is
at the Kino Sports Complex, along Ajo Way east of I-10 and the
Tucson Electric Park stadium. The hamfest starts around 0600
local time (1300 UTC), and should be done by noon.
At my AMSAT table, I plan on doing demonstrations using 2 FM
satellites (AO-51, SO-50) and a linear-transponder satellite
(VO-52). This has been a successful way to show interested
hams that a large station is not necessary to get started,
either on FM or SSB. Subject to the availability of these
satellites, WD9EWK will be on the following passes from the
hamfest:
AO-51: 1346 UTC
SO-50: 1619 and 1759 UTC
VO-52: 1537 and 1712 UTC
I may be on the 1208 UTC AO-51 pass if I am up and about at that
time, but probably not from the hamfest site. If you hear me on
any of these passes, please feel free to give me a call. The
hamfest is in grid DM42me, for those who may be interested in that.
I will send QSL cards to all who work WD9EWK at the hamfest, in
appreciation of your support of my demonstrations.
After the hamfest, I do not plan on taking the direct route back
to Phoenix. I may wander over to other grids in southern or
southeastern Arizona before making the drive home. I do not know
which grid or grids I will visit for those passes. I hope to be
on the afternoon AO-27 and afternoon/evening AO-51 passes from
somewhere - and somewhere could be DM31, DM32, DM41, DM51, DM52,
DM53, or some combination of these grids. For the post-hamfest
activity, you don't have to send me a QSL or SASE if you work me.
Just e-mail me the QSO details, and I'll send out a QSL card if
you are in the log.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 3
Date: Wed, 14 Oct 2009 15:55:45 -0700 (PDT)
From: "Patrick STODDARD \(WD9EWK/VA7EWK\)" <amsat-bb@xxxxxx.xxx>
Subject: [amsat-bb] Tucson (AZ) hamfest - correction on the start
time
To: amsat-bb@xxxxx.xxx
Message-ID: <836024.11700.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Hi!
A correction... the hamfest I will attend on Saturday in Tucson AZ
will start at 0700 local (1400 UTC). Even with the later start, I
plan on sticking to my schedule for working AO-51 at 1346 UTC from
the hamfest site. The hamfest may not officially be open, but there
will certainly be people around that will watch the demonstration
at that time.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 4
Date: Wed, 14 Oct 2009 19:07:47 -0400
From: "Larry" <n1miw@xxx.xxx>
Subject: [amsat-bb] Re: Can we get them to fix AO-40 first then?
To: <amsat-bb@xxxxx.xxx>
Message-ID: <87E506C02B7A47DF992FEC1EC3E4BDB2@xxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
With all of the chatter lately in regards to HEO's (people putting their
eggs in one basket with a hole in it) etc., it still brings up the point
that even though the satellite doesn't work now, maybe it just "might" if
the solar panels were attempted to be opened. I've received several emails
in regards to that particular command & why it wouldn't work, but we will
never know if AO-40 is in the proper attitude since it is off. If we could
attempt to recover the satellite & just get SOME telemetry to see what's
going on, we're in better shape than just letting it sit up there & "hope"
the short goes away or that she "wakes up". Imagine if the "event" damaged a
circuit by putting it to ground that is causing everything to short out, and
moving a panel releases the short due to vibration! How many of you have hit
your TV set to fix a jumpy screen? Or better yet, an analog meter to get the
needle to move? Hopefully the transmitter comes back on the air sending
telemetry once more if this could happen. It doesn't seem right that there's
a battery up there that's only what, 2 years old, and it developed an
internal short? I am by no means an aerospace expert, but I have batteries
for my HT's that are older than that & still work fine. If this is what
happened, I hope newer designs are including circuitry to prevent the total
failure of the sat if this was to happen again. After the "event", there was
talk about AO-40 possibly not being in one piece - was there a definite
answer? I don't remember, nor did I check the archives.
My final thought on this is - if you can't get the receiver to decode
commands, it's a loss, end of story. If it will receive, make it open the
panels to get more power to the bird. Once the satellite is fully
illuminated by the sun during its rotation, then try to work on stabilizing
the satellite. Until that is tried, I personally feel that not every last
attempt at reviving AO-40 has been attempted, and we could very possibly
have an operating (although partially crippled) HEO in orbit. Besides, if
the propellant is still there, what's to say it won't leak out between now &
whenever she decides to "wake up"? Who's going to be able to control it in
20+ years? Won't it be useless to hams then too?
I'm not looking to start any heated arguments - this is all just my
opinion. I haven't read every book there is on satellites, nor do I even
remotely work close to the industry. I'm just an average ham who enjoys the
sats from time to time, and would love to see someone "tinker" with AO-40 to
get her back on the air!!!!!
73's... Larry N1MIW
...LEO's are satellites too!!!!!
------------------------------
Message: 5
Date: Wed, 14 Oct 2009 16:17:35 -0700
From: "David Wing" <david@xxxxxx.xxx>
Subject: [amsat-bb] Re: Icom R-75 Like New in the Box
To: <amsat-bb@xxxxx.xxx>
Message-ID: <56FC1BD555F345D69C35BFC2685D1714@xxxxx>
Content-Type: text/plain; charset="us-ascii"
grrrrr...somebody at the facility needs to be strung up!
I can't believe they would not let him put up a wire just to monitor!
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of John Henderson N4NAB
Sent: Wednesday, October 14, 2009 1:16 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Icom R-75 Like New in the Box
R-75 receiver for sale. Selling for elderly Ham who moved into a assisted
living unit and wanted something to listen to. the facility would not let
him put up antenna or string a wire. Unit is in the box ( but opened and
powered up by me) as new. $425 plus shipping from 28584 ( 17# packed).
Thanks n4nab@xxxxx.xxx John
John
John Henderson N4NAB
212 Bayside Drive
Cape Carteret, NC 28584
_______________________________________________
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, 14 Oct 2009 18:36:45 -0600
From: "Vince Fiscus, KB7ADL" <vlfiscus@xxx.xxx>
Subject: [amsat-bb] Re: Let's Go!
To: amsat-bb@xxxxx.xxx
Message-ID: <5.2.1.1.2.20091014175604.00c33b88@xxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 09:43 AM 10/14/2009 -0700, Bill Ress <bill@xxxxxxxxxxx.xxx> mumbled:
>We all want a HEO or would even settle for a MEO but until someone can
>"show us the money" to get our satellite there, we're stuck in LEO,
>plain and simple.
Hmmmmm, Interesting ....
How can the Board expect to get donations for a HEO satellite when for the
past three or four years it hasn't ONCE demonstrated that it was even
committed to building one? If the Board really wanted a HEO, it sure
didn't act like it.
Guess it's gonna be more FM grid sats cause there's alot of grids out there
that need exchanging.
73 DE KB7ADL, DN55,
Thanks for the Grid!!!
------------------------------
Message: 7
Date: Wed, 14 Oct 2009 23:34:34 +0000 (UTC)
From: w6zkh@xxxxxxx.xxx
Subject: [amsat-bb] Fresno CA Hamfest to have satellite talks 10/17
To: amsat-bb <amsat-bb@xxxxx.xxx>
Message-ID:
<1183812901.9806421255563274338.JavaMail.root@xxxxxxx.xxxxxxxxxxx.xx.xxxx.xxxx
xxx.xxx>
Content-Type: text/plain; charset=utf-8
I noted when I looked at the flyer put out by the Fresno ARC that along with
other speakers, etc., they are having a Satellite and LEO talk to be given
by WA6WTF. Dont think I've ever worked him/her yet though. I will be
attending, but just to observe and listen. I will have my portable gear with
me, but AO-51 is out of question (too early AM) but may hit either SO-50 or
AO-27 for at least one pass. This is from DM06 Grid. Later in day am headed
for Madera for possible pass on AO-51 and that grid is DM07. Good Luck
Patrick in your demo's.
John W6ZKH
DM06
------------------------------
Message: 8
Date: Wed, 14 Oct 2009 16:35:47 -0700
From: Franklin Antonio <antonio@xxxxxxxx.xxx>
Subject: [amsat-bb] Re: KLM 2M-14C...waterproof the polarity switch?
To: David Wing <david@xxxxxx.xxx>
Cc: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Message-ID:
<09be35b0-6537-4cd5-a3ca-a8eb28f71fef@xxxxxxxxxxxx.xx.xxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 12:37 PM 10/13/2009, David Wing wrote:
>It looks like the relay has silicon around the base but it just
>grates me the wrong way to have a circuit board with a power connection and
>components exposed to the elements. ... Maybe it has not been an
>issue but I'd care to hear of anyone experiences.
By all means do SOMETHING. I did not originally, and I replaced a
relay once, and then later I had the conductors etched right off of
the board by electrolytic effects. I often left the 12v for the
polarity control turned on, and when dew or whatever makes the board
damp, current from the 12v flows thru the water, etching conductors
away. (In my location we have dew every night just about year
round.) Later I repaired the board by putting down wires where the
traces used to be, and covering them with silicone.
I've heard stories over the years of many other people having these problems.
That board definitely needs some environmental protection.
------------------------------
Message: 9
Date: Wed, 14 Oct 2009 19:44:03 EDT
From: G0MRF@xxx.xxx
Subject: [amsat-bb] Re: Can we get them to fix AO-40 first then?
To: n1miw@xxx.xxx
Cc: amsat-bb@xxxxx.xxx
Message-ID: <bfb.67ac647e.3807bc43@xxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
In a message dated 14/10/2009 23:17:11 GMT Standard Time, n1miw@xxx.xxx
writes:
My final thought on this is - if you can't get the receiver to decode
commands, it's a loss, end of story. If it will receive, make it open the
panels to get more power to the bird. Once the satellite is fully
illuminated by the sun during its rotation, then try to work on stabilizing
the satellite. Until that is tried, I personally feel that not every last
attempt at reviving AO-40 has been attempted,
Hi.
The first time I read the post, I thought simply, no power = no receiver so
no command to the satellite.
But then, I thought of something else.
When AO-40 was built, it would be launched with all systems off. When
released into space some hardware would have switched on the receivers and a
transmitter for telemetry.
Now, it's sitting there with a shorted battery.....or is it?
If the battery were to open circuit, then the satellite may think it's
being switched on for the first time. But with AO-40 I seem to remember that
telemetry was on 2m.
The significance of your idea and my memory....is that the 2m transmitter
does not work. So we would need to send a command to turn the S band
transmitter on.
It is virtually impossible for S band to just appear, like AO-7 did if it
is not the default mode at switch on.
But it completely justifies your idea of sending a command at it every now
and again.
Thanks for the thought
Regards
David
------------------------------
Message: 10
Date: Wed, 14 Oct 2009 19:46:59 -0400
From: David - KG4ZLB <kg4zlb@xxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: L/U repeater back on
To: amsat-bb@xxxxx.xxx
Message-ID: <4AD662F3.6040603@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Sounding good, I just had a 30 degree pass up the middle of the Gulf of
Mexico and spoke with John (K8YSE) and Jeff (K7WIN) - great to have it
back in this mode for a while!
--
David
KG4ZLB
www.kg4zlb.com
Andrew Glasbrenner wrote:
> L/U repeater is back on now. Sorry about switching back and forth twice,
> I had to go back and fix something. 435.150 is at 450mw, and 435.300 is
> at 630mw. Friday morning we'll probably switch back to digital for a
> pass, then to JOTA configuration that evening.
>
> 73, Drew KO4MA
> _______________________________________________
> 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: 11
Date: Wed, 14 Oct 2009 10:41:29 -0600
From: "Jack K." <kd1pe.1@xxxxx.xxx>
Subject: [amsat-bb] Re: Icom R-75 Like New in the Box
To: "David Wing" <david@xxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <07C69F435C1641D398B66E7C06B56E46@xxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Has anyone ever heard of a passive loop antenna indoors? About 36" square
and quite good for receive... There is more than one way to skin a landlord
or owners committee
DE KD1PE
----- Original Message -----
From: "David Wing" <david@xxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Wednesday, October 14, 2009 5:17 PM
Subject: [amsat-bb] Re: Icom R-75 Like New in the Box
> grrrrr...somebody at the facility needs to be strung up!
>
> I can't believe they would not let him put up a wire just to monitor!
>
------------------------------
Message: 12
Date: Wed, 14 Oct 2009 20:01:19 -0400
From: Jean-Fran?ois M?nard <jf.va2ss@xxxxx.xxx>
Subject: [amsat-bb] Re: LVB Tracker kit
To: Ciaran Morgan <ciaran@xxxxxxxxxxx.xx.xx>
Cc: AMSAT Mailing list <amsat-bb@xxxxx.xxx>
Message-ID:
<b6cfdc060910141701mc585f0emc836ca72336c8148@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Ok thanks. I will stay tuned !! Hi !
73
2009/10/14 Ciaran Morgan <ciaran@xxxxxxxxxxx.xx.xx>
> Hi,
>
> AMSAT-UK offer various kits on the LVB Tracker from bare motherboards
> (including the TCP/USB interface board) to full kits (enclosure, display,
> motherboard and components).
>
> Please check the AMSAT-UK website for details http://www.uk.amsat.org (the
> link to the shop is on the left hand side - please select the "Hardware"
> sub-link for details on the hardware we have for sale).
>
> Unfortunately, I am currently out of stock on all LVB kits (plenty of
> motherboards available though) and am in the process of restocking - the
> kits are very popular this side of the pond!
>
> I will announce on this list when I have more stock.
>
> 73
>
> Ciaran
> M0XTD - AMSAT-UK Shop
>
> > -----Original Message-----
> > From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
> > Behalf Of Jean-Fran?ois M?nard
> > Sent: 14 October 2009 21:30
> > To: AMSAT Mailing list
> > Subject: [amsat-bb] LVB Tracker kit
> >
> > Hi,
> >
> > I probably missed something.... but on AMSAT website, we are able to
> > buy
> > the LVB Tracker completely assembled, the bare board without any part
> > or
> > only the enclosure........
> >
> >
> > What about a complete LVB Tracker.... but as a kit ??
> >
> > I don't want to save money, I just like to build, when possible, my
> > hardware.
> >
> > Is there a place to purchase a complete LVB Tracker (parts and
> > enclosure) as a kit instead of completly built ??
> >
> > Thank for your help.
> >
> > 73
> >
> > --
> > Jean-Fran?ois M?nard
> > VA2SS
> >
> > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> > AMSAT www.amsat.org / Member #37102
> > ARRL www.arrl.org
> > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> >
> > _______________________________________________
> > 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
>
>
>
>
--
Jean-Fran?ois M?nard
VA2SS
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
AMSAT www.amsat.org / Member #37102
ARRL www.arrl.org
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
------------------------------
Message: 13
Date: Wed, 14 Oct 2009 19:15:26 -0500
From: Rocky Jones <orbitjet@xxxxxxx.xxx>
Subject: [amsat-bb] Re: Can we get them to fix AO-40 first then?
To: <n1miw@xxx.xxx>, Amsat BB <amsat-bb@xxxxx.xxx>
Message-ID: <COL106-W26EFDEC6BDEE25A1AB5216D6C50@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Larry. (these are just my thoughts, and mine alone...I dont work with the
"command team" or anything).
There is no doubt that AO-40 is spinning...radar and optical observation of
it shows that. I also believe that it is "wobbling" as well (I cannot see
how it would not be wobbling, I dont think that there is a nutation damper
and with all the events that have occurred with it, well it would be hard to
imagine it is not...and some observations would lead to that conclusion...)
If it is spinning and wobbling then opening the solar panels, if they could
be opened would be dicey. Some vehicles in the past have been designed to
open while spinning (Pioneer V for instance) but I would bet money that 40's
are not. The first concern I would have is "would they stay on" followed
quickly by what is going to happen to the attitude of the vehicle (since it
cannot be controlled) as they open......things could get worse rapidly.
All that might be problematical as I doubt that anyone's "RF" is getting
through.
Two things that I have read recently (like in the last week) surprise me.
The first is that apparently the command team had no real "QRH" (quick
reference handbook) for either normal or abnormal or emergency situations.
Layfolks call this a "checklist" and it is standard "stuff" on complex
machines...for instance if the same situation were to happen in a transport
category airplane the pilots would have "boldface items" which they would
perform and then reference printed and thought out procedures.
OK QRH's take time to develop and all...but as a second thing.....I am kind
of surprised that with all the events that happen to AO-40 someone didnt
think that thhe battery might be a "problem area". Then game out what
could/would happen as time moved on and have those procedures ready for the
"command team". (as an aside I am surprised that the relay for the battery
failed "closed" with a short or undervolt...I dont know what lead the
designers to do this, it is required fare in airplanes that battery
contractors with an undervolt fail open...)
Once it became clear that AO-40 was going to have a hard time transitioning
to a three axis vehicle from a "spinner" and that with substantially less
power from the arrays then expected. It surprised me that .someone didnt
think long and hard as to what that would do to battery life and develop in
place procedures for all the command team to execute with a drop in battery
voltage.
All this and the problems at its birth point to a vehicle that was far to
complex for the team to manage both in prep, normal and abnormal/emergency
procedures.
There is in my view a better chance of AO-10 returning to life then 40...I
bet you that vehicle looks like one of my classmates A-10 warthog after he
tangled with a "zipper" (ZSU-23) ie it is probably full of holes.
As we say here in Texas, it lived hard and died young
(what do I do? I am a test pilot for the US government)
Robert WB5MZO
_________________________________________________________________
Your E-mail and More On-the-Go. Get Windows Live Hotmail Free.
http://clk.atdmt.com/GBL/go/171222985/direct/01/
------------------------------
Message: 14
Date: Wed, 14 Oct 2009 17:21:38 -0700
From: "Jeff Yanko" <wb3jfs@xxx.xxx>
Subject: [amsat-bb] Re: Icom R-75 Like New in the Box
To: "David Wing" <david@xxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Message-ID: <2335308D88C94718BA82CBA461CB0562@xxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Really! All he would have to do is lay a wire along the floorboard out of
the way. 15 to 20 feet would be sufficient. I'm doing that now with the SW
receiver in the bedroom. Not an issue.
73,
Jeff WB3JFS
----- Original Message -----
From: "David Wing" <david@xxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Sent: Wednesday, October 14, 2009 4:17 PM
Subject: [amsat-bb] Re: Icom R-75 Like New in the Box
> grrrrr...somebody at the facility needs to be strung up!
>
> I can't believe they would not let him put up a wire just to monitor!
>
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
> Behalf Of John Henderson N4NAB
> Sent: Wednesday, October 14, 2009 1:16 PM
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Icom R-75 Like New in the Box
>
> R-75 receiver for sale. Selling for elderly Ham who moved into a assisted
> living unit and wanted something to listen to. the facility would not let
> him put up antenna or string a wire. Unit is in the box ( but opened and
> powered up by me) as new. $425 plus shipping from 28584 ( 17# packed).
>
>
>
> Thanks n4nab@xxxxx.xxx John
>
>
>
>
>
> John
>
> John Henderson N4NAB
>
> 212 Bayside Drive
>
> Cape Carteret, NC 28584
>
>
>
> _______________________________________________
> 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: 15
Date: Wed, 14 Oct 2009 20:45:41 -0400
From: "Larry" <n1miw@xxx.xxx>
Subject: [amsat-bb] Re: Can we get them to fix AO-40 first then?
To: <G0MRF@xxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <73200BDF36C5466F8CE522FDF2B551AE@xxxxxxxx>
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Yes, that is an interesting point. What happens if it does come on, but
cannot transmit? When power is restored, what will the satellite do, if
anything? I guess only the command stations would have a chance to get it to
send telemetry on 2.4GHz. I don't remember what happened to the 2M downlink,
but time to check the archives.
-----Original Message-----
From: G0MRF@xxx.xxx [mailto:G0MRF@xxx.xxxx
Sent: Wednesday, October 14, 2009 7:44 PM
To: n1miw@xxx.xxx
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Re: Can we get them to fix AO-40 first then?
In a message dated 14/10/2009 23:17:11 GMT Standard Time, n1miw@xxx.xxx
writes:
My final thought on this is - if you can't get the receiver to decode
commands, it's a loss, end of story. If it will receive, make it open
the
panels to get more power to the bird. Once the satellite is fully
illuminated by the sun during its rotation, then try to work on
stabilizing
the satellite. Until that is tried, I personally feel that not every
last
attempt at reviving AO-40 has been attempted,
Hi.
The first time I read the post, I thought simply, no power = no receiver
so no command to the satellite.
But then, I thought of something else.
When AO-40 was built, it would be launched with all systems off. When
released into space some hardware would have switched on the receivers and a
transmitter for telemetry.
Now, it's sitting there with a shorted battery.....or is it?
If the battery were to open circuit, then the satellite may think it's
being switched on for the first time. But with AO-40 I seem to remember that
telemetry was on 2m.
The significance of your idea and my memory....is that the 2m transmitter
does not work. So we would need to send a command to turn the S band
transmitter on.
It is virtually impossible for S band to just appear, like AO-7 did if it
is not the default mode at switch on.
But it completely justifies your idea of sending a command at it every now
and again.
Thanks for the thought
Regards
David
------------------------------
Message: 16
Date: Wed, 14 Oct 2009 21:23:34 -0400
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] Sumbandilasat update posted
To: amsat-bb@xxxxx.xxx
Message-ID:
<5d8cecfe0910141823l4c4109a7j3a400f53cd08369f@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Let's hope that future testing is more encouraging...keep the faith
and keep trying, team!
73,
Mark N8MH
from: http://www.amsatsa.org.za/
STOP PRESS
SumbandilaSat failed to switch on the amateur radio payload during the
first test. Sunspace will be looking at the possible cause and
reschedule further tests. Stay tuned!
------------------------------
Message: 17
Date: Wed, 14 Oct 2009 21:31:30 -0400
From: Michael Tondee <mat_62@xxxxxxxxxxxx.xxx>
Subject: [amsat-bb] Re: Can we get them to fix AO-40 first then?
To: amsat-bb@xxxxx.xxx
Message-ID: <4AD67B72.3070805@xxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I guess I need to go back and read the archives because what I remember
reading didn't give me any hope AO-40 would ever be back. Wasn't there
something about that they believed the spacecraft was leaking corrosive
fuel? Doesn't sound to conducive to any type of recovery of anything
where electronics are involved.. I also thought there was talk of a
"catastrophic explosion".
Michael, W4HIJ
------------------------------
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End of AMSAT-BB Digest, Vol 4, Issue 539
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