| |
CX2SA > SATDIG 29.10.14 14:04l 853 Lines 23060 Bytes #999 (0) @ WW
BID : AMSATBB9368
Read: GUEST
Subj: AMSAT-BB-digest V9 368
Path: IW8PGT<IZ3LSV<IV3SCP<IW0QNL<JH4XSY<JE7YGF<7M3TJZ<CX2SA
Sent: 141029/1201Z @:CX2SA.SAL.URY.SOAM #:11845 [Salto] FBB7.00e $:AMSATBB9368
From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: Torque Coil turns vanish? (Robert Bruninga)
2. Antares Launch: Tonight (Weds) from Wallops Island, VA @ 6:22
PM (Eric Rosenberg)
3. Re: Torque Coil turns vanish? (Thomas Doyle)
4. Two Perspectives On Orbital Debris And Cubesats (B J)
5. D700 vs D7 at 9600 baud? (Robert Bruninga)
6. whoops ! (Ted)
7. Re: Torque Coil turns vanish? (Joe Leikhim)
8. Re: whoops ! (Ted)
9. Re: whoops ! (Andrew Glasbrenner)
10. NASA Post-launch News Conference @ 8:00 PM ET (Eric Rosenberg)
11. Re: whoops ! (Ted)
12. Re: whoops ! (B J)
13. More On Antares Mishap (B J)
14. We lost satellite payloads this evening! (Eric Rosenberg)
15. Re: whoops ! (Alan)
----------------------------------------------------------------------
Message: 1
Date: Tue, 28 Oct 2014 08:28:11 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: David G0MRF <g0mrf@xxx.xxx>, amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Torque Coil turns vanish?
Message-ID: <7c0fa856e740c364ae3ec388e3388952@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Amen, one has to have kickback diodes to the rails to absorb that energy.
(Else, poof goes the pin)
Bob
*Subject:* Re: [amsat-bb] Torque Coil turns vanish?
That's an interesting technique, but as the CPU pin turns off and the
magnetic field collapses, don't you get a huge spike in voltage due to
dI/dt that could kill the CPU I/O port?
We ended up with 600 turns of #34 wire to keep the current at 25 mA so we
can drive it directly from a CPU pin.
73
David
-----Original Message-----
From: Robert Bruninga <bruninga@xxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Sent: Mon, 27 Oct 2014 20:35
Subject: [amsat-bb] Torque Coil turns vanish?
I keep coming up with the number of turns of a torque coil vanishing with
respect to torque (for a given wire size).
Given that Torque = A x B x I x n where A is area, B is field, I is current
and n is number of turns.
But I is inversely proportional to the length of wire (resistance). I = V/R
but R is proportional to n.
Hence the number of turns. So I is proportional to V/n.
But V is fixed in the cubesat, (5v) area is fixed (where we can put the
coil) and so plugging in,
T = A x B x V/n x n and the n?s cancel.
So I can get the same torque with ?any- number of turns for a given size
wire.
What changes with turns, of course, is the current. So to save spacecraft
power, the more turns, the less current, and thus, the least power for the
same torque.
Interesting result.
We ended up with 600 turns of #34 wire to keep the current at 25 mA so we
can drive it directly from a CPU pin.
I wonder where?s the limit? Infinitie number of turns? Zero current? I
guess you run out of space.
AH HA! Yes, that was it. We started with #30 wire but it took so many
turns to get to below the 25 mA, that there wasn?t room for the coil. So
we went to smaller wire and ended up with the #34 to give us a ?? thick
coil with 600 turns to give 25 mA.
But I just always found it interesting that once you have chosen the wire
size, the number of turns is only determined by the current you want. The
Torque is constant.
Bob, WB4APR
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. 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://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 2
Date: Tue, 28 Oct 2014 09:33:45 -0400
From: Eric Rosenberg <ericrosenberg.dc@xxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Cc: amsat-dc@xxxxx.xxx
Subject: [amsat-bb] Antares Launch: Tonight (Weds) from Wallops
Island, VA @ 6:22 PM
Message-ID:
<CAGX_=kcaiv1gfhx_97aeH6GCNKHkiE1A9HsMmj8ig335upjYxw@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
from NASA.GOV
-----------------------Antares Launch Postponed to Oct. 28
Posted on October 27, 2014 at 6:47 pm
The next launch attempt for Orbital Sciences? Antares rocket carrying its
Cygnus cargo spacecraft is scheduled for 6:22 p.m. EDT Tuesday, Oct. 28
from the Mid-Atlantic Regional Spaceport Pad 0A at NASA?s Wallops Flight
Facility in Virginia. There is a 10 minute launch window. Live coverage on
NASA TV will begin at 5:30 p.m. EDT.
Monday?s launch attempt was scrubbed because of a boat down range in the
trajectory Antares would have flown had it lifted off.
At last report, the weather forecast for Oct. 28 was 95-percent favorable.
Arrival of the Cygnus spacecraft at the International Space Station would
occur Nov. 2.
? How to View the CRS-3 Launch:
http://blogs.nasa.gov/orbital/2014/10/24/how-to-view-the-crs-3-launch/
>Maps of viewing locations:
http://www.orbital.com/NewsInfo/MissionUpdates/Orb-3/Maps/default.aspx?
> NASA's Orbital Website:
http://www.nasa.gov/mission_pages/station/structure/launch/orbital.html
Should be quite a show from those of us in the mid-Atlantic area.
Enjoy!
73,
Eric W3DQ
Washington, DC
------------------------------
Message: 3
Date: Tue, 28 Oct 2014 08:52:44 -0500
From: Thomas Doyle <tomdoyle1948@xxxxx.xxx>
To: Robert Bruninga <bruninga@xxxx.xxx>
Cc: AMSAT <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Torque Coil turns vanish?
Message-ID:
<CAHnRQRLJcRc6ScNgFcFkeV+3YJPirhQqF7W8fmrevV4X=B3=kQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Bob,
Often the simplest things turn out to be the most interesting. Your post
reminded me of something a bit similar that happened while I worked for
Motorola. There was 450MHz mobile radio in the product line that had 3.5
Watts of audio power for the speaker. The brain trust in the marketing
department decided that the competitors radios had 5.0 watts so we had to
re-design the audio section. The design had been optimized for maximum
efficiency in the small space available for the speaker but none the less
we had to do it.
The speaker had to be re-designed - the wire used for the voice coil was
too small to handle the 5 watts. When the wire size was increased to handle
the increased current there was room for fewer turns of wire in the voice
coil. The end result was the radio now had 5 watts of audio power but
actually generated several dB lower sound levels than the previous
efficient design with 3.5 watts of audio power. Marketing was happy - we
just shook our heads.
W9KE tom...
On Mon, Oct 27, 2014 at 3:35 PM, Robert Bruninga <bruninga@xxxx.xxx> wrote:
> I keep coming up with the number of turns of a torque coil vanishing with
> respect to torque (for a given wire size).
>
>
>
> Given that Torque = A x B x I x n where A is area, B is field, I is current
> and n is number of turns.
>
> But I is inversely proportional to the length of wire (resistance). I = V/R
> but R is proportional to n.
>
> Hence the number of turns. So I is proportional to V/n.
>
>
>
> But V is fixed in the cubesat, (5v) area is fixed (where we can put the
> coil) and so plugging in,
>
> T = A x B x V/n x n and the n?s cancel.
>
>
>
> So I can get the same torque with ?any- number of turns for a given size
> wire.
>
>
>
> What changes with turns, of course, is the current. So to save spacecraft
> power, the more turns, the less current, and thus, the least power for the
> same torque.
>
> Interesting result.
>
>
>
> We ended up with 600 turns of #34 wire to keep the current at 25 mA so we
> can drive it directly from a CPU pin.
>
>
>
> I wonder where?s the limit? Infinitie number of turns? Zero current? I
> guess you run out of space.
>
>
>
> AH HA! Yes, that was it. We started with #30 wire but it took so many
> turns to get to below the 25 mA, that there wasn?t room for the coil. So
> we went to smaller wire and ended up with the #34 to give us a ?? thick
> coil with 600 turns to give 25 mA.
>
>
>
> But I just always found it interesting that once you have chosen the wire
> size, the number of turns is only determined by the current you want. The
> Torque is constant.
>
>
>
> Bob, WB4APR
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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://amsat.org/mailman/listinfo/amsat-bb
>
--
Sent from my computer.
tom ...
------------------------------
Message: 4
Date: Tue, 28 Oct 2014 21:06:32 +0000
From: B J <va6bmj@xxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Two Perspectives On Orbital Debris And Cubesats
Message-ID:
<CAP7QzkNvLrm7=dC_PZvoTiG0WhZModrBM_4vPazpBPJv2Dqy_g@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
http://www.spacenews.com/article/civil-space/4207665th-international-astronaut
ical-congress-cubesat-revolution-spotty
http://www.spacenews.com/article/opinion/42329another-view-on-cubesats-and-deb
ris
73s
Bernhard VA6BMJ @ DO33FL
------------------------------
Message: 5
Date: Tue, 28 Oct 2014 17:14:51 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] D700 vs D7 at 9600 baud?
Message-ID: <c5f3b60f80a264f75cfda37f75d8ed8f@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
9600 baud differences in the D700 vs D7?
We are testing a cubesat with 9600 baud AX.25 uplink on VHF and it works
fine with the D7 as the transmitting radio, but the satellite ignores the
same commands transmitted from the D700 radio. Anyone else noticed this?
I guess we will have to put it on a scope and see if we can see the
difference.
But maybe we are doing something stupid. The D700 (and D7) receive the
cubesat just fine.
I knew there was a slight difference on 1200 baud with regard to
pre-and-de-emphasis between the two radios, but that should not apply at
9600 which is baseband modulated.
Bob, WB4APR
------------------------------
Message: 6
Date: Tue, 28 Oct 2014 15:40:52 -0700
From: "Ted" <k7trkradio@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] whoops !
Message-ID: <000501cff300$3aea58e0$b0bf0aa0$@xxx>
Content-Type: text/plain; charset="us-ascii"
Wallops Is rocket explodes just now
K7TRK
22:35z
------------------------------
Message: 7
Date: Tue, 28 Oct 2014 18:43:44 -0400
From: Joe Leikhim <rhyolite@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Torque Coil turns vanish?
Message-ID: <54501C20.1010307@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I am no rocket scientist, but wouldn't the earths magnetic fields tend
to bias those diodes on as the satellite cuts through them, creating
subtle drag?
Joe K4SAT
------------------------------------------------------------------------
_
__Amen, one has to have kickback diodes to the rails to absorb that energy.
(Else, poof goes the pin)
Bob_
--
Joe Leikhim
Leikhim and Associates
Communications Consultants
Oviedo, Florida
JLeikhim@xxxxxxx.xxx
407-982-0446
WWW.LEIKHIM.COM
------------------------------
Message: 8
Date: Tue, 28 Oct 2014 15:47:54 -0700
From: "Ted" <k7trkradio@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] whoops !
Message-ID: <000a01cff301$36783c40$a368b4c0$@xxx>
Content-Type: text/plain; charset="us-ascii"
http://video.foxnews.com/v/2553565094001/antares-rocket-explodes-on-launch/#
sp=watch-live
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Ted
Sent: Tuesday, October 28, 2014 3:41 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] whoops !
Wallops Is rocket explodes just now
K7TRK
22:35z
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. 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://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 9
Date: Tue, 28 Oct 2014 19:35:42 -0400
From: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
To: Ted <k7trkradio@xxxxxxx.xxx>
Cc: "<amsat-bb@xxxxx.xxx>" <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] whoops !
Message-ID: <1E84AE6A-B383-4C48-B6DF-A0E39A18B6E8@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
No injuries reported on ground. Elsewhere some boat captain just had a
revelation about exclusion zones.
73, Drew KO4MA
Sent from my iPhone
> On Oct 28, 2014, at 6:47 PM, Ted <k7trkradio@xxxxxxx.xxx> wrote:
>
> http://video.foxnews.com/v/2553565094001/antares-rocket-explodes-on-launch/#
> sp=watch-live
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
> Behalf Of Ted
> Sent: Tuesday, October 28, 2014 3:41 PM
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] whoops !
>
> Wallops Is rocket explodes just now
>
>
>
> K7TRK
>
> 22:35z
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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://amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 10
Date: Tue, 28 Oct 2014 19:38:20 -0400
From: Eric Rosenberg <ericrosenberg.dc@xxxxx.xxx>
Cc: pvrc@xxxxxxx.xxx.xxxx Amsat-bb Mailing List <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] NASA Post-launch News Conference @ 8:00 PM ET
Message-ID: <545028EC.8050507@xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
NASA will be holding a post-launchnews conference at 8:00 PM ET tonight
on the nasa.com website.
http://www.nasa.gov/multimedia/nasatv/index.html#.VFAm8xZNe6U
should be interesting.
Eric W3DQ
(was at the MLK Memorial -- a great viewing site)
------------------------------
Message: 11
Date: Tue, 28 Oct 2014 16:42:27 -0700
From: "Ted" <k7trkradio@xxxxxxx.xxx>
To: "'Andrew Glasbrenner'" <glasbrenner@xxxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] whoops !
Message-ID: <000001cff308$d5b21720$81164560$@xxx>
Content-Type: text/plain; charset="us-ascii"
Video looks like it just got started...boy, lot's of shrapnel !!!
K7TRK
-----Original Message-----
From: Andrew Glasbrenner [mailto:glasbrenner@xxxxxxxxxx.xxxx
Sent: Tuesday, October 28, 2014 4:36 PM
To: Ted
Cc: <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] whoops !
No injuries reported on ground. Elsewhere some boat captain just had a
revelation about exclusion zones.
73, Drew KO4MA
Sent from my iPhone
> On Oct 28, 2014, at 6:47 PM, Ted <k7trkradio@xxxxxxx.xxx> wrote:
>
> http://video.foxnews.com/v/2553565094001/antares-rocket-explodes-on-la
> unch/#
> sp=watch-live
>
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx
> On Behalf Of Ted
> Sent: Tuesday, October 28, 2014 3:41 PM
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] whoops !
>
> Wallops Is rocket explodes just now
>
>
>
> K7TRK
>
> 22:35z
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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://amsat.org/mailman/listinfo/amsat-bb
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 12
Date: Wed, 29 Oct 2014 01:38:27 +0000
From: B J <va6bmj@xxxxx.xxx>
To: Ted <k7trkradio@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] whoops !
Message-ID:
<CAP7QzkPEUYzBZBiPHfYfQC6FyndSTWx+c1ZBLDPFgC9ewLtQtg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
On 10/28/14, Ted <k7trkradio@xxxxxxx.xxx> wrote:
> Wallops Is rocket explodes just now
Here are some video recordings of what happened:
http://www.spacenews.com/article/launch-report/42340antares-rocket-explodes-af
ter-liftoff
http://www.americaspace.com/?p=69934
http://www.parabolicarc.com/2014/10/28/video-antares-rocket-explosion/
It looked like some sort of sideways explosion occurred near the
bottom just before the rocket became unstable and exploded.
73s
Bernhard VA6BMJ @ DO33FL
------------------------------
Message: 13
Date: Wed, 29 Oct 2014 03:59:01 +0000
From: B J <va6bmj@xxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] More On Antares Mishap
Message-ID:
<CAP7QzkMgQiqWWJ4Pe_G4TgQSuCpx0b74r9PWndL3A8gA+aKuYQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
http://www.parabolicarc.com/2014/10/28/53809/
http://www.nasa.gov/press/2014/october/nasa-statement-regarding-oct-28-orbital
-sciences-corp-launch-mishap/
http://www.spacenews.com/article/civil-space/42345nasa-statement-on-antares-la
unch-mishap
73s
Bernhard VA6BMJ @ DO33FL
------------------------------
Message: 14
Date: Wed, 29 Oct 2014 00:27:19 -0400
From: Eric Rosenberg <ericrosenberg.dc@xxxxx.xxx>
To: Amsat-bb Mailing List <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] We lost satellite payloads this evening!
Message-ID: <54506CA7.20201@xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
From the ARRL website:
http://www.arrl.org/news/satellites-carrying-amateur-radio-payloads-among-thos
e-lost-in-launch-explosion
<http://www.arrl.org/news/satellites-carrying-amateur-radio-payloads-among-tho
se-lost-in-launch-explosion>
Satellites Carrying Amateur Radio Payloads Among Those Lost in Launch
Explosion 10/28/2014
The GOMX-2 and RACE CubeSats were among more than 2 dozen satellites that
were lost after an unmanned Orbital Space Sciences (OSC) Antares 130 vehicle
exploded spectacularly shortly after launch at 2222 UTC on Tuesday, October
28, from the Mid-Atlantic Regional Spaceport on Wallops Island on Virginia?s
Eastern Shore. Both satellite packages carried payloads that operated on
Amateur Radio frequencies. The Antares is a new medium-class launch vehicle
developed by OSC.
The rocket exploded about 6 seconds after launch, sending a huge ball of
fire hurtling toward the ground, which set a massive fire at the NASA launch
site.
?A mishap has occurred at pad 0A,? a launch conductor said during the live
broadcast on NASA TV. ?There is no indication there is personnel in danger,
although we do have significant property damage and significant vehicle
damage.?
The 2U GMX-2 CubeSat was intended to test a de-orbit system designed by
Aalborg University in Denmark. Karl Klaus Laursen, OZ2KK, is listed as the
?responsible operator? on International Amateur Radio Union frequency
coordination documents. The Amateur Radio payload proposed using a 9.6 k MSK
data downlink on 437.250 MHz. Also on board was an optical communications
experiment from the National University of Singapore. The mission also hoped
to
flight qualify a new high-speed UHF transceiver and SDR receiver built by an
Aalborg University team.
The Radiometer Atmospheric Cubesat Experiment (RACE) CubeSat was a joint
project between The Texas Spacecraft Laboratory (TSL) at the University of
Texas-Austin and NASA?s Jet Propulsion Laboratory (JPL). It carried a 183
GHz radiometer, a new science instrument designed by JPL. The primary
objective of the RACE mission was to collect atmospheric water vapor
measurements. The spacecraft was equipped to transmit using GMSK at 38.4 k and
CW telemetry on a downlink frequency of 437.525MHz, as coordinated with the
IARU. TSL?s Edgar Glenn Lightsey, KE5DDG, was listed in the IARU
coordination documents as the responsible operator.
The Antares 130 launcher was on a resupply mission, carrying some 5000
pounds of cargo to the International Space Station. GOMX-2 and the other
satellites
onboard the rocket were to be launched into orbit from the International
Space Station.
The Antares 130 also was carrying the Flock-1d array of 26 satellites as
well as Arkyd-3, Cygnus CRS-3, and the RACE CubeSat
------------------------------
Message: 15
Date: Wed, 29 Oct 2014 05:17:18 -0500
From: Alan <wa4sca@xxxxx.xxx>
To: "'Ted'" <k7trkradio@xxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] whoops !
Message-ID: <003601cff361$861a94e0$924fbea0$@xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
An impressive, unexpected rapid disassembly.
Alan
WA4SCA
<-----Original Message-----
<From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Ted
<Sent: Tuesday, October 28, 2014 5:41 PM
<To: amsat-bb@xxxxx.xxx
<Subject: [amsat-bb] whoops !
<
<Wallops Is rocket explodes just now
<
<
<
<K7TRK
<
<22:35z
<
<_______________________________________________
<Sent via AMSAT-BB@xxxxx.xxx. 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://amsat.org/mailman/listinfo/amsat-bb
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx.
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 member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 9, Issue 368
****************************************
Read previous mail | Read next mail
| |
