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CX2SA > SATDIG 06.09.11 21:16l 408 Lines 15010 Bytes #999 (0) @ WW
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Sent: 110906/1912Z @:CX2SA.LAV.URY.SA #:25904 [Minas] FBB7.00e $:AMSATBB6509
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: 6800 uF electrolitic capacitor purchased in Cina (PY5LF)
2. Re: Is Prospero still TX'ing? (John Wright)
3. Magnetic North vs True North (Carl Rimmer W8KRF)
4. New Views - Apollo Landing Sites (Clint Bradford)
5. Re: Magnetic North vs True North (Joseph Armbruster)
6. Re: New Views - Apollo Landing Sites (B J)
----------------------------------------------------------------------
Message: 1
Date: Tue, 6 Sep 2011 13:08:02 -0300
From: "PY5LF" <py5lf@xxxxxxxxxxxxx.xxx.xx>
To: <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] Re: 6800 uF electrolitic capacitor purchased in
Cina
Message-ID: <008001cc6caf$2a0a3390$7e1e9ab0$@xxx.xx>
Content-Type: text/plain; charset="iso-8859-1"
Actually is very difficult to find some type of RF transistor like 2SC1969 ,
2SC1307 , etc .
Sometimes they take TIP41 , repaint e sell like original one .The appearance
is very similar .
PY5LF
LUCIANO FABRICIO
Curitiba-PR-Brazil GG54jm
http://www.qrz.com/db/py5lf
-----Mensagem original-----
De: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx Em nome
de Tim Cunningham
Enviada: ter?a-feira, 6 de setembro de 2011 01:59
Para: AMSAT-BB
Assunto: [amsat-bb] Re: 6800 uF electrolitic capacitor purchased in Cina
Unfortunately, counterfeit parts are flooding the market, especially parts
in limited supply. Some components may be painted and stamped with the
choice of a difficult to obtain component.
73's,
Tim - N8DEU
----- Original Message -----
From: "i8cvs" <domenico.i8cvs@xxx.xx>
To: "Amsat - BBs" <amsat-bb@xxxxx.xxx>
Sent: Monday, September 05, 2011 5:32 PM
Subject: [amsat-bb] 6800 uF electrolitic capacitor purchased in Cina
> Hi All,
>
> Just for curiosity please look at this 6800 uF electrolitic capacitor
> purchased in Cina !
>
> http://sinocom.ru/attachment.php?attachmentid=2124&d=1302278111
>
> The left capacitor is encapsulated in original conditions while the right
> capacitor has
> been decapsulated.
>
> Info received from my friend Paolo, IW2HEU
>
> 73" de
>
> i8CVS Domenico
> _______________________________________________
> 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: 2
Date: Tue, 06 Sep 2011 17:30:37 +0100
From: John Wright <ham@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Is Prospero still TX'ing?
Message-ID: <0M1hZS-1RKHYE3s0A-00u1CD@xxxxxxxx.xxxxxxxxxxxx.xx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 11:41 06/09/2011, you wrote:
>Is Prospero still transmitting?
>
>Sometime ago, I think in 2007 the BBC TV program Coast was on the
>Isle of White
>where there had been a test stand for rocket testing.
I have a copy of that program, It was BBC "Coast" Series 2, Episode 1
Dover to Isle Of Wight.
Its right at the end of the episode. It tells the story of Prospero,
and shows a receiver connected to a small yagi, and the satellite
is audible. They use an AR8600 RX, and the displayed frequency is
137.5610 Wide FM
Don't know about sharing, the whole episode avi is 700+meg! + copyright
issues.
------------------------------
Message: 3
Date: Tue, 06 Sep 2011 13:38:09 -0400
From: Carl Rimmer W8KRF <w8krf@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Magnetic North vs True North
Message-ID: <4E665A81.9070703@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
The earlier discussion on this topic caused me to think about my setup.
I know the tracking programs use True North; my question: If my
declination is 8 ? 6' West, is my true north East or West of Magnetic
North. I am currently setup to where my True North is 8? East of
Magnetic North. I have looked a various sights on the Internet but I
have always had a problem wrapping my thick brain around this topic.
Thanks,
--
*Carl W8KRF*
------------------------------
Message: 4
Date: Tue, 06 Sep 2011 10:59:03 -0700
From: Clint Bradford <clintbradford@xxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] New Views - Apollo Landing Sites
Message-ID: <CCE3451C-C740-485D-97B1-CA2E6E36771C@xxx.xxx>
Content-Type: text/plain; CHARSET=US-ASCII
RELEASE: 11-289
NASA SPACECRAFT IMAGES OFFER SHARPER VIEWS OF APOLLO LANDING SITES
GREENBELT, Md. -- NASA's Lunar Reconnaissance Orbiter (LRO) captured
the sharpest images ever taken from space of the Apollo 12, 14 and 17
landing sites. Images show the twists and turns of the paths made
when the astronauts explored the lunar surface.
At the Apollo 17 site, the tracks laid down by the lunar rover are
clearly visible, along with the last foot trails left on the moon.
The images also show where the astronauts placed some of the
scientific instruments that provided the first insight into the
moon's environment and interior.
"We can retrace the astronauts' steps with greater clarity to see
where they took lunar samples," said Noah Petro, a lunar geologist at
NASA's Goddard Space Flight Center in Greenbelt, Md., who is a member
of the LRO project science team.
All three images show distinct trails left in the moon's thin soil
when the astronauts exited the lunar modules and explored on foot. In
the Apollo 17 image, the foot trails, including the last path made on
the moon by humans, are easily distinguished from the dual tracks
left by the lunar rover, which remains parked east of the lander.
"The new low-altitude Narrow Angle Camera images sharpen our view of
the moon's surface," said Arizona State University researcher Mark
Robinson, principal investigator for the Lunar Reconnaissance Orbiter
Camera (LROC). "A great example is the sharpness of the rover tracks
at the Apollo 17 site. In previous images the rover tracks were
visible, but now they are sharp parallel lines on the surface."
At each site, trails also run to the west of the landers, where the
astronauts placed the Apollo Lunar Surface Experiments Package
(ALSEP) to monitor the moon's environment and interior. This
equipment was a key part of every Apollo mission.
It provided the first insights into the moon's internal structure,
measurements of the lunar surface pressure and the composition of its
atmosphere. Apollo 11 carried a simpler version of the science
package.
One of the details that shows up is a bright L-shape in the Apollo 12
image. It marks the locations of cables running from ALSEP's central
station to two of its instruments. Although the cables are much too
small for direct viewing, they show up because they reflect light
very well.
The higher resolution of these images is possible because of
adjustments made to LRO's orbit, which is slightly oval-shaped or
elliptical. "Without changing the average altitude, we made the orbit
more elliptical, so the lowest part of the orbit is on the sunlit
side of the moon," said Goddard's John Keller, deputy LRO project
scientist. "This put LRO in a perfect position to take these new
pictures of the surface."
The maneuver lowered LRO from its usual altitude of approximately 31
miles (50 kilometers) to an altitude that dipped as low as nearly 13
miles (21 kilometers) as it passed over the moon's surface. The
spacecraft has remained in this orbit for 28 days, long enough for
the moon to completely rotate. This allows full coverage of the
surface by LROC's Wide Angle Camera. The cycle ends today when the
spacecraft will be returned to its 31-mile orbit.
"These images remind us of our fantastic Apollo history and beckon us
to continue to move forward in exploration of our solar system," said
Jim Green, director of the Planetary Science Division at NASA
Headquarters in Washington.
LRO was built and managed by Goddard. Initial research was funded by
the Exploration Systems Mission Directorate at NASA Headquarters. In
September 2010, after a one-year successful exploration mission, the
mission turned its attention from exploration objectives to
scientific research in NASA's Science Mission Directorate.
To learn more about LRO, visit:
http://www.nasa.gov/lro
-end-
Clint Bradford
clintbradford@xxx.xxx
------------------------------
Message: 5
Date: Tue, 6 Sep 2011 14:28:45 -0400
From: Joseph Armbruster <josepharmbruster@xxxxx.xxx>
To: Carl Rimmer W8KRF <w8krf@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Magnetic North vs True North
Message-ID:
<CADkz4c9v-t7H+KmbRKARR3=hLoiPcUpUn-gMXT_dReXB+pWYxA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Carl,
Please look at the FAQ provided by NOA, this should help:
http://www.ngdc.noaa.gov/geomag/faqgeom.shtml
If you are interested in the technical details of the IGRF, see:
http://www.ngdc.noaa.gov/IAGA/vmod/igrf.html
If I was not at work, I could provide a longer explanation.
Hope this helps!
Joseph Armbruster, KJ4JIO
skype: Joseph Armbruster, Orlando Florida
On Tue, Sep 6, 2011 at 1:38 PM, Carl Rimmer W8KRF <w8krf@xxxxx.xxx> wrote:
> The earlier discussion on this topic caused me to think about my setup. I
> know the tracking programs use True North; my question: If my declination
> is 8 ? 6' West, is my true north East or West of Magnetic North. I am
> currently setup to where my True North is 8? East of Magnetic North. I have
> looked a various sights on the Internet but I have always had a problem
> wrapping my thick brain around this topic.
>
> Thanks,
> --
> *Carl W8KRF*
> ______________________________**_________________
> 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<http://amsat.org/mailman/listinfo
/amsat-bb>
>
------------------------------
Message: 6
Date: Tue, 6 Sep 2011 18:46:31 +0000
From: B J <va6bmj@xxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: New Views - Apollo Landing Sites
Message-ID:
<CAP7QzkNqsHRfnJGFsqW8d71367H02vqcJGSz6D4Ba1S4Q47ZAg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
On Tue, Sep 6, 2011 at 5:59 PM, Clint Bradford <clintbradford@xxx.xxx>wrote:
> RELEASE: 11-289
>
> NASA SPACECRAFT IMAGES OFFER SHARPER VIEWS OF APOLLO LANDING SITES
>
> GREENBELT, Md. -- NASA's Lunar Reconnaissance Orbiter (LRO) captured
> the sharpest images ever taken from space of the Apollo 12, 14 and 17
> landing sites. Images show the twists and turns of the paths made
> when the astronauts explored the lunar surface.
>
> At the Apollo 17 site, the tracks laid down by the lunar rover are
> clearly visible, along with the last foot trails left on the moon.
> The images also show where the astronauts placed some of the
> scientific instruments that provided the first insight into the
> moon's environment and interior.
>
> "We can retrace the astronauts' steps with greater clarity to see
> where they took lunar samples," said Noah Petro, a lunar geologist at
> NASA's Goddard Space Flight Center in Greenbelt, Md., who is a member
> of the LRO project science team.
>
> All three images show distinct trails left in the moon's thin soil
> when the astronauts exited the lunar modules and explored on foot. In
> the Apollo 17 image, the foot trails, including the last path made on
> the moon by humans, are easily distinguished from the dual tracks
> left by the lunar rover, which remains parked east of the lander.
>
> "The new low-altitude Narrow Angle Camera images sharpen our view of
> the moon's surface," said Arizona State University researcher Mark
> Robinson, principal investigator for the Lunar Reconnaissance Orbiter
> Camera (LROC). "A great example is the sharpness of the rover tracks
> at the Apollo 17 site. In previous images the rover tracks were
> visible, but now they are sharp parallel lines on the surface."
> At each site, trails also run to the west of the landers, where the
> astronauts placed the Apollo Lunar Surface Experiments Package
> (ALSEP) to monitor the moon's environment and interior. This
> equipment was a key part of every Apollo mission.
>
> It provided the first insights into the moon's internal structure,
> measurements of the lunar surface pressure and the composition of its
> atmosphere. Apollo 11 carried a simpler version of the science
> package.
>
> One of the details that shows up is a bright L-shape in the Apollo 12
> image. It marks the locations of cables running from ALSEP's central
> station to two of its instruments. Although the cables are much too
> small for direct viewing, they show up because they reflect light
> very well.
> The higher resolution of these images is possible because of
> adjustments made to LRO's orbit, which is slightly oval-shaped or
> elliptical. "Without changing the average altitude, we made the orbit
> more elliptical, so the lowest part of the orbit is on the sunlit
> side of the moon," said Goddard's John Keller, deputy LRO project
> scientist. "This put LRO in a perfect position to take these new
> pictures of the surface."
>
> The maneuver lowered LRO from its usual altitude of approximately 31
> miles (50 kilometers) to an altitude that dipped as low as nearly 13
> miles (21 kilometers) as it passed over the moon's surface. The
> spacecraft has remained in this orbit for 28 days, long enough for
> the moon to completely rotate. This allows full coverage of the
> surface by LROC's Wide Angle Camera. The cycle ends today when the
> spacecraft will be returned to its 31-mile orbit.
>
> "These images remind us of our fantastic Apollo history and beckon us
> to continue to move forward in exploration of our solar system," said
> Jim Green, director of the Planetary Science Division at NASA
> Headquarters in Washington.
>
> LRO was built and managed by Goddard. Initial research was funded by
> the Exploration Systems Mission Directorate at NASA Headquarters. In
> September 2010, after a one-year successful exploration mission, the
> mission turned its attention from exploration objectives to
> scientific research in NASA's Science Mission Directorate.
>
> To learn more about LRO, visit:
>
>
>
> http://www.nasa.gov/lro
>
There are photos at:
http://www.onorbit.com/node/3780
http://lroc.sese.asu.edu/news/index.php?/archives/454-Skimming-the-Moon.html#e
xtended
73s
Bernhard VA6BMJ @ DO33FL
------------------------------
_______________________________________________
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 509
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