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CX2SA > SATDIG 15.11.11 22:06l 776 Lines 22806 Bytes #999 (0) @ WW
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Today's Topics:
1. Apollo 12 (Burns Fisher)
2. AO-27 Status (Clint Bradford)
3. Trifecta Plus One - No, Perfecta! (Clint Bradford)
4. Re: Apollo 12 (Rick Tejera)
5. /p from DM58 (Jim Adams)
6. Fwd: Mystery of the Lunar Ionosphere (GW1FKY@xxx.xxxx
7. Re: AO-27 Status (Simon HB9DRV)
8. Apologies: Re my Posting -Mystery of Lunar Ionosphere
(GW1FKY@xxx.xxxx
9. Re: Fwd: Mystery of the Lunar Ionosphere (Tony Langdon)
10. DO and DO NOT with your RF connectors (i8cvs)
11. Re: ARISSat-1 Re-entry Prediction (Fabio Azzarello)
12. Re: Status on re-activating Prospero (Roger Duthie)
13. CO6CBF/p EL91 (Hector Luis Martinez Sis)
14. ARISSat-1 (37772) decay (DeYoung James)
----------------------------------------------------------------------
Message: 1
Date: Mon, 14 Nov 2011 17:17:59 -0500
From: Burns Fisher <burns@xxxxxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Apollo 12
Message-ID:
<CABX7KxXKsh0R7dojbFTwY_BpM9NCS62LZpLUbCwtgWqeas7btQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
>
> >> ... Remember Apollo 12?
>
>
>
> ------------------------------
>
> Message: 8
> Date: Sun, 13 Nov 2011 22:03:01 -0700
> From: Rick Tejera <saguaroastro@xxx.xxx>
> To: Clint Bradford <clintbradford@xxx.xxx>
> Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
> Subject: [amsat-bb] Re: Would NASA Ever Launch in this Weather?
> Message-ID: <144F3CBB-6919-421B-8FDA-45F230C17E48@xxx.xxx>
> Content-Type: text/plain; charset=us-ascii
>
> And mission saved because EECOM controller remembered a test that had the
> same garbled pattern on his screen. He told the crew (through the Capcom)
> to "Try SCE to Aux". The NY other person who knew what he meant was LMP
> Alan Bean. Fortunately the switch was by his head. He flipped it and
> telemetry was restored.
>
> Among flight controllers the term SCE to Aux is considered legendary.
>
> Btw, SCE stands go Signal Conditioning Equipment. The SCE converts raw
> signals from instrumentation to standard voltages for the spacecraft
> instrument displays and telemetry encoders.
>
> Sent from my iPod
> Rick Tejera
> Editor, SACnews
> Saguaro Astronomy Club
> www.saguaroastro.org
> K7TEJ
>
> On Nov 13, 2011, at 21:51, Clint Bradford <clintbradford@xxx.xxx> wrote:
>
> > Touche, Rick. Two lightning strikes ... ABORT handle grasped for minutes
> ...
> >
> > http://youtu.be/ajOsHVK11Lw
> >
> > Clint
> >
> >>> ... Remember Apollo 12?
> >
>
Check out this transcript. Notice that PA makes no mention whatever of the
problem? I remember (and actually heard in real time) the "Program Alarm
1201" calls (and was worried before Walter and Wally noticed, as I recall)
on Apollo 11, but I don't remember the SCE to Aux call at all. They must
have switched it back before TLI, right? Surely they would not head off to
the moon with no backup...
Burns, W2BFJ
(who also knew they had landed before Walter..."Contact light...engines
stop." Wait several seconds, they are still talking. They must have
landed!)
http://history.nasa.gov/ap12fj/01launch_to_earth_orbit.htm
------------------------------
Message: 2
Date: Mon, 14 Nov 2011 14:38:34 -0800
From: Clint Bradford <clintbradford@xxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] AO-27 Status
Message-ID: <D59FED33-6863-43F5-9AFB-EF0680F8DEC2@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
What set of Keplerian data is the most reliable for AO-27?
And it seems that the West Coast US south-to-north passes are still up and
running ... But is there any "better" info available - with the
http://www.ao27.org/AO27/index.shtml site down?
Clint Bradford, K6LCS
------------------------------
Message: 3
Date: Mon, 14 Nov 2011 14:44:19 -0800
From: Clint Bradford <clintbradford@xxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Trifecta Plus One - No, Perfecta!
Message-ID: <8CE4FCDF-3AC7-49BF-954F-C66BDA59DAB0@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
Yesterday (Sunday) at a little after 1PM PST time, I had four FM sats within
range -
ARISSat-1, AO-27, SO-50, and the ISS were all monitor-able from Southern CA
within minutes of each other. I mean,
you'd snag one, tune to another and re-orient the antenna, and there another
sat was ... and then another ... and another ...
Way too exciting for this aging ham.
Clint Bradford, K6LCS
http://www.work-sat.com
------------------------------
Message: 4
Date: Mon, 14 Nov 2011 17:03:42 -0700
From: "Rick Tejera" <saguaroastro@xxx.xxx>
To: "'Burns Fisher'" <burns@xxxxxx.xx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Apollo 12
Message-ID:
<20111115000723.RVHE3801.fed1rmfepo103.cox.net@xxxxxxxxxxxxx.xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Burns,
I'll have to listen again.. and yes they reset it before TLI. They were
quite busy during the parking orbit. Dick Gordon had to realign and reset
the guidance platform, no easy task considering he had no reference as he
normally would have. Also he had trouble identifying the Alignment Stars as
there was a lot of debris from the jettison of the Optics cover and the
alignment stars were in the southern part of the sky, and were not the
brightest stars n the catalogue. While he was at that Conrad and bean had to
bring the fuel cells back on line and get all the electrics & systems up &
running. Conrad was concerned that the forward RCS thrusters may have gotten
water in from the rain and possibly frozen (Which fortunately was not the
case. All this and the usual pre TLI tasks.
As for Apollo 11, most folks think the words spoken on the moon were
"Houston Tranquility base here, the Eagle has Landed" Not so. They were
Aldrin: "ACA out of detent" Armstrong: "Out of detent Auto", Aldrin: Mode
Control, Both Auto, Descent engine command override, off. Engine Arm off,
413 is in".
The ACA was the Attitude Control Assembly which turned the RCS thrusters
off. If they didn't so this the thrusters would have continued to fire
trying to maintain attitude. The remaining items essentially safed the
descent engine and 413 in was a command to the AGS (Abort Guidance System)
that told the System, they'd landed and to note this position for reference
n case of an immediate abort.
If you hadn't noticed, I'm fascinated with the Apollo missions. :)
I recommend the book: "How Apollo flew to the Moon" by W. David Woods for
those interested n learning more about the engineering & mechanics of the
moon missions.
Clear Skies
Rick Tejera
Saguaro Astronomy Club
Phoenix, Arizona
www.saguaroastro.org
saguaroastro@xxx.xxx
K7TEJ, AMSAT 38452
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Burns Fisher
Sent: Monday, November 14, 2011 15:18
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Apollo 12
>
> >> ... Remember Apollo 12?
>
>
>
> ------------------------------
>
> Message: 8
> Date: Sun, 13 Nov 2011 22:03:01 -0700
> From: Rick Tejera <saguaroastro@xxx.xxx>
> To: Clint Bradford <clintbradford@xxx.xxx>
> Cc: AMSAT BB <amsat-bb@xxxxx.xxx>
> Subject: [amsat-bb] Re: Would NASA Ever Launch in this Weather?
> Message-ID: <144F3CBB-6919-421B-8FDA-45F230C17E48@xxx.xxx>
> Content-Type: text/plain; charset=us-ascii
>
> And mission saved because EECOM controller remembered a test that had the
> same garbled pattern on his screen. He told the crew (through the Capcom)
> to "Try SCE to Aux". The NY other person who knew what he meant was LMP
> Alan Bean. Fortunately the switch was by his head. He flipped it and
> telemetry was restored.
>
> Among flight controllers the term SCE to Aux is considered legendary.
>
> Btw, SCE stands go Signal Conditioning Equipment. The SCE converts raw
> signals from instrumentation to standard voltages for the spacecraft
> instrument displays and telemetry encoders.
>
> Sent from my iPod
> Rick Tejera
> Editor, SACnews
> Saguaro Astronomy Club
> www.saguaroastro.org
> K7TEJ
>
> On Nov 13, 2011, at 21:51, Clint Bradford <clintbradford@xxx.xxx> wrote:
>
> > Touche, Rick. Two lightning strikes ... ABORT handle grasped for minutes
> ...
> >
> > http://youtu.be/ajOsHVK11Lw
> >
> > Clint
> >
> >>> ... Remember Apollo 12?
> >
>
Check out this transcript. Notice that PA makes no mention whatever of the
problem? I remember (and actually heard in real time) the "Program Alarm
1201" calls (and was worried before Walter and Wally noticed, as I recall)
on Apollo 11, but I don't remember the SCE to Aux call at all. They must
have switched it back before TLI, right? Surely they would not head off to
the moon with no backup...
Burns, W2BFJ
(who also knew they had landed before Walter..."Contact light...engines
stop." Wait several seconds, they are still talking. They must have
landed!)
http://history.nasa.gov/ap12fj/01launch_to_earth_orbit.htm
_______________________________________________
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: Mon, 14 Nov 2011 17:59:59 -0700
From: Jim Adams <jim9251@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] /p from DM58
Message-ID:
<CAD6RR8hzes2zzdAOjpNOBWd1sTL9e-Q3KZBHJgjvRc+jkhfR=A@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
I forget at times that DM58 is only a short distance from my QTH. Today I
had 21 QSO's from DM58: K8YSE, WC0X, KC7MG, KA6SIP, WA5KBH, KF7MYK, W0DHB,
KJ6SON, CO6CBF, N5JF, AC8HQ, WB0IEL, K4FEG,
W5PFG, AJ1O, NX9B, N8RO, KL4E, VE8EV, AC2GK/VE5, KL7XJ.
I think just about everyone has this grid, but if any of you need a QSL
card from DM58 let me know and I'll get one out to you. ALSO, if anyone
needs DM58, let me know and I can walk down there for you.
Where will I be tomorrow? Stay tuned.
(Trying to make amends for my stupid Amsat Bulliten comment)
Jim Adams - K0BAM
Delta Colorado
------------------------------
Message: 6
Date: Tue, 15 Nov 2011 03:31:51 -0500 (EST)
From: GW1FKY@xxx.xxx
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Fwd: Mystery of the Lunar Ionosphere
Message-ID: <130fd.61d7e9b.3bf37d77@xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hi,
While we are on the subject of the Moon and looking back at missions - take
a look at the web pages I have forwarded. Should prove quite a talking
point in terms of our hobby - ionosphere and radio communications
on and around the Moon.
Regards
Ken Eaton
GW1FKY
------------------------------
Message: 7
Date: Tue, 15 Nov 2011 09:49:14 +0100
From: "Simon HB9DRV" <simon@xxxxxx.xx>
To: "'Clint Bradford'" <clintbradford@xxx.xxx>, "'AMSAT BB'"
<amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: AO-27 Status
Message-ID: <008c01cca373$73e3d7a0$5bab86e0$@xx>
Content-Type: text/plain; charset="us-ascii"
The latest Keps I am aware of are those on Celestrak.
Simon Brown, HB9DRV
http://sdr-radio.com
"Ten little fingers, Ten tiny toes, The sweetest of smiles And a cute little
nose."
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Clint Bradford
Sent: 14 November 2011 23:39
To: AMSAT BB
Subject: [amsat-bb] AO-27 Status
What set of Keplerian data is the most reliable for AO-27?
And it seems that the West Coast US south-to-north passes are still up and
running ... But is there any "better" info available - with the
http://www.ao27.org/AO27/index.shtml site down?
Clint Bradford, K6LCS
_______________________________________________
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: 8
Date: Tue, 15 Nov 2011 04:16:11 -0500 (EST)
From: GW1FKY@xxx.xxx
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Apologies: Re my Posting -Mystery of Lunar
Ionosphere
Message-ID: <18f3f.7a2bbe43.3bf387db@xxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
Apologies,
My posting on the subject should have included details of the address, but
as it was forwarded it will perhaps
have been filtered.
Details are as follows.
Ken Eaton
GW1FKY
NASA Science News for Nov. 14, 2011
How can a world without air have an ionosphere? Somehow the Moon has done
it. Lunar researchers have been struggling with the mystery for years, and
they may have finally found a solution.
FULL STORY at
_http://science.nasa.gov/science-news/science-at-nasa/2011/14nov_lunarionosphe
re/_
(http://science.nasa.gov/science-news/science-at-nasa/2011/14nov_lunarionosphe
re/)
A video version of this story is available at
_http://www.youtube.com/watch?v=_zSrP4MacFE_
(http://www.youtube.com/watch?v=_zSrP4MacFE)
You are currently subscribed to snglist as: _gw1fky@xxxxx.xxxx
(mailto:gw1fky@xxxxx.xxxx .
This is a free service.
------------------------------
Message: 9
Date: Tue, 15 Nov 2011 21:25:20 +1100
From: Tony Langdon <vk3jed@xxxxx.xxx>
To: GW1FKY@xxx.xxxx amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Fwd: Mystery of the Lunar Ionosphere
Message-ID: <4ec23e1a.091c640a.0538.7321@xx.xxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
>Hi,
>While we are on the subject of the Moon and looking back at missions - take
> a look at the web pages I have forwarded. Should prove quite a talking
>point in terms of our hobby - ionosphere and radio communications
>on and around the Moon.
Suddenly ham radio on the moon looks a whole lot more
interesting. New propagation experiments to try to characterise the
lunar ionosphere's RF properties. Only trouble is getting there.
73 de VK3JED / VK3IRL
http://vkradio.com
------------------------------
Message: 10
Date: Tue, 15 Nov 2011 12:16:54 +0100
From: "i8cvs" <domenico.i8cvs@xxx.xx>
To: "AMSAT-BB" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] DO and DO NOT with your RF connectors
Message-ID: <00c101cca388$14c5f860$0401a8c0@xxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi All,
The following is a very interesting paper coming from
GORE-TEX microwave test cables :
DO
HANDLING & STORAGE
1) Keep connectors clean
2) Extend sleeve or connector nut
3) Cap when not in use
4) Store in provided box
5) Unroll any cable loops
VISUAL INSPECTION
1) Inspect all connectors-including
mates-carefully before every
connection
2) Look for metal particles, debris,
scratches, dents, loose pins,
jammed collects, worn plating,
damaged nuts
CLEANING
1) First try compressed air only
2) Use pure isopropanol with cotton
swabs
3) Clean connector threads
4) Dry with compressed air
GAGING
1) Gage all connectors before first use
and periodically thereafter
2) Clean and zero the gage before using
MAKING CONNECTIONS
1) Align connectors carefully
2) Make preliminary connection lightly
3) Turn connector nut only to tighten
4) If possible, use a torque wrench for
final connection
5) Use proper torque
6) Loosen and re-torque periodically
7) Prevent rotation of connector bodies
------------------------------------------------------
DO NOT
HANDLING & STORAGE
1) Touch mating plane surfaces
2) Set connectors contact-end down
3) Allow free cable end to drop
4) Store loose in drawer
5) Pull out cable loops
6) Use cables to reposition equipment
VISUAL INSPECTION
1) Use or connect to a damaged or
dirty connector-ever
CLEANING
1) Use any abrasives, chlorinated solvents,
or lubricants
2) Get isopropanol onto plastic support beads
3) Blow into connectors
4) Tap connectors to remove debris
GAGING
1) Use an out-of-spec connector
2) Hold gage by housing-use plunger barrel only
MAKING CONNECTIONS
1) Apply bending force to connection
2) Overtighten preliminary connection
3) Connect by rotating the famale
4) Tighten past "break" point of torque wrench
5) Snap wrench more than once
6) Approach break point rapidly
7) Use an end wrench to tighten
73" de
i8CVS Domenico
------------------------------
Message: 11
Date: Tue, 15 Nov 2011 14:56:09 +0100
From: Fabio Azzarello <iw8qku@xxxxx.xxx>
To: AMSAT-BB@xxxxx.xxx
Subject: [amsat-bb] Re: ARISSat-1 Re-entry Prediction
Message-ID:
<CAG-zPHMeQLjjjAB8L-ygiGUsF=epK_6MfTKN=T1cU0=AeotmNA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hello everybody,
I did my guess before the end of the "Chicken Little Competition"...
maybe a little too early to catch the correct date of re-entry.
Anyway, I've noticed that your prediction, Mineo, seems to be
optimistic towards the date of re-entry.
I think that, close to that date, sat's height will decrease much
faster than you've predicted
thus the re-entry could be sooner than April 9th.
I will be pleased to share my prediction with anybody is interested.
73s
Fabio
IW8QKU/5
>Thanks, Mineo. Your work is interesting.
>
>If my memory is correct, the prediction shared at the AMSAT Symposium is for
>April 2012. Your results agree!
>
>73,
>
>Mark N8MH
>
>At 11:13 AM 11/12/2011 +0900, Mineo Wakita wrote:
>>I calculated and predicted the time of ARISSat-1 Re-entry.
>>
>>http://www.ne.jp/asahi/hamradio/je9pel/arissat5.htm
>>
>>JE9PEL, Mineo Wakita
>>
>>
>>_______________________________________________
>>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: 12
Date: Tue, 15 Nov 2011 13:57:26 +0000
From: Roger Duthie <rjad@xxxx.xxx.xx.xx>
To: pe0sat@xxxxx.xx
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Status on re-activating Prospero
Message-ID: <4EC26FC6.8040105@xxxx.xxx.xx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Apologies, Jan!
We've now set up a blgo at:
blogs.ucl.ac.uk/prospero-satellite
It's still in it's infancy, and we need to add backdated information on
the project, though it will have all the goings on of the project that
we're going to publicise.
Again, apologies for the silence.
-Rr.
PE0SAT wrote:
> Roger,
>
>
> Can you send us an update?
>
> A lot of people have spend time and energie on this and it would nice
> to hear how it ended?
>
> - Did you ever hear prospero?
> - Was it possible to send commands to prospero?
> - How was de setup your group used?
> - Are there some audio-, video clips, picture?
> - An article on the whole proces of re-activating prospero?
> - New data on the satellite?
> - etc, etc.
>
> 73 Jan PE0SAT
>
>
>
>> Hi Roger,
>>
>>
>> What became of the attempts to bring Prospero back to life?
>>
>> Can you give us an update?
>>
>>
>> 73 Jan - PE0SAT
>>
>
>
>
--
---
Roger J A Duthie
PhD Candidate
Plasma Group
Department of Space & Climate Physics
UCL, London
w: +44(0)1483 204 100 ext 2299
m: +44(0)7938 55 70 44
------------------------------
Message: 13
Date: Tue, 15 Nov 2011 10:25:01 -0500 (EST)
From: "Hector Luis Martinez Sis" <hmartinez@xxx.xxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] CO6CBF/p EL91
Message-ID: <1143.10.14.32.18.1321370701.squirrel@xxxxxx.xxx.xxx.xx>
Content-Type: text/plain;charset=utf-8
Hi guys
This afternoon (15 Nov) I will do a work travel to EL91. If anyone needs
this grid,
please drop me an email for a schedule and I will carry my homebrew portable
setup.
73!
Hector, CO6CBF
EL92
***************************************
Genius is one per cent inspiration,
and ninety-nine per cent
perspiration.
-- Thomas A. Edison
***************************************
---
Free the Cuban Five!
http://www.injusticia.cubaweb.cu/, http://www.antiterroristas.cu/
Participe en Universidad 2012, del 13 al 17 de febrero de 2012. Habana, Cuba.
http://www.congresouniversidad.cu/
Consulte la Enciclopedia Colaborativa Cubana: http://www.ecured.cu/
------------------------------
Message: 14
Date: Tue, 15 Nov 2011 09:29:31 -0800 (PST)
From: DeYoung James <deyoung_james@xxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] ARISSat-1 (37772) decay
Message-ID:
<1321378171.90069.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Greetings,
?
First, thank you Mineo for reading the AMSAT Journal and making several of
my papers available
on?your web site.
My AMSAT Journal
paper published in the March/April 2011 issue is actually still fairly valid
for the scenarios shown in the paper. The solar flux has turned out to be
somewhat higher than was used/predicted in the paper. This has caused the
atmospheric densities to be higher which results in higher decay rates. When I
wrote the paper I had this nagging feeling that stopping the
release height
scenarios at 370-km was not going to be high enough. We are very fortunate
that
the ISS was boosted to such a height before release of ARISSat-1 and not after
release!
?
There is a
valuable lesson, I think, to be made with respect to predicting satellite
decay
dates far into the future. The future state of the atmosphere, i.e. the
atmospheric density that the satellite will pass through is poorly predictable
in the long-term, say starting greater than a week or two into the future.
Predictions of?satellite decay?dates months in the future should be
evaluated with the understanding that your date of prediction errors may be
large. The errors
are due to the future uncertainties of the orbital path which
grow quickly with time in a prediction. The atmospheric density is not the
only
source of error. Your orbit model, the integrator, and the accounting of the
gravitational and
drag forces among others will affect your results.
Predictions of
satellite decay dates are not do-and-forget. The general process is to make a
prediction, get new measured observations of the height in the future, and at
some point re-do your prediction when the errors become significant to you.
With that all
said here is my current prediction using the same tools used in the AMSAT J.
paper and produced as of 2011 November 13th. The decay of ARISSat-1 (37772)
will happen nominally on 2012 January 30th with a 10% rule-of-thumb error
allowance of 18 days around this date. The
errors may be larger than the rule-of-thumb indicates!
Jim, N8OQ
------------------------------
_______________________________________________
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 628
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