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CX2SA > SATDIG 14.06.14 14:01l 588 Lines 18214 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Math Tool for Authors (JoAnne Maenpaa)
2. Re: CN70 (David Palmer KB5WIA)
3. TabletSat-Aurora has D-STAR + Summer OSCAR News released (M5AKA)
4. SpaceX Launch Delayed Again (B J)
5. Re: FUNcube/AO-73 Mode change (Jim Heck)
6. AO-7 (Bob- W7LRD)
7. Re: AO-7 (Glenn Miller - AA5PK)
8. Re: AO-7 (Andrew Glasbrenner)
9. Re: AO-7 (Bob- W7LRD)
10. re AO-7 (Tom Worthington)
11. Re: AO-7 (Bob Cutter)
12. receiving APT on 137 MHz (Lizeth Norman)
13. Re: receiving APT on 137 MHz (kc6uqh@xxx.xxxx
14. Re: receiving APT on 137 MHz (Jim Jerzycke)
15. Re: receiving APT on 137 MHz (Alan)
----------------------------------------------------------------------
Message: 1
Date: Fri, 13 Jun 2014 10:15:48 -0500
From: "JoAnne Maenpaa" <k9jkm@xxxxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Math Tool for Authors
Message-ID: <002301cf871a$5b770560$12651020$@xxx>
Content-Type: text/plain; charset="us-ascii"
Hello everyone,
I found an interesting tool for those who publish technical articles
such as Symposium Papers and AMSAT Journal articles. (hint)
A review by the University of Wisconsin reads, "Created through the
collaborative efforts of the American Mathematical Society, Design
Science, Inc., and the Society for Industrial and Applied Mathematics,
MathJax is the best source for visually displaying math online."
Demos of features and samples of various mathematical expressions and
equations and downloading of the free JavaScript-based engine is at:
http://www.mathjax.org/
You can even copy/paste your equations and math into Word without
finding the special fonts much less figuring out how to make them
work.
Looking forward to your articles!
--
73 de JoAnne K9JKM
k9jkm@xxxxx.xxx
Editor, AMSAT Journal
PS - Our AMSAT Journal welcomes all kinds of articles in addition to
the fancy pants math. How did you optimize your station? ... lend a
helping hand to beginners ... operate a demonstration at a hamfest ...
work with a satellite team ...
------------------------------
Message: 2
Date: Fri, 13 Jun 2014 08:17:04 -0700
From: David Palmer KB5WIA <kb5wia@xxxxx.xxx>
To: Richard Tejera <Saguaroastro@xxx.xxx>
Cc: AMSAT <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] CN70
Message-ID:
<CAO-vtPMF4iWqJEE4GrPq8L5Eqan1sOjmqHt4g4TOSASGECoL=g@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Thanks Rick!
I'm still scratching the mosquito bites from that trip, ha!! Just
kidding -- that grid expedition was a fun adventure!
73 de Dave KB5WIA
On Wed, Jun 11, 2014 at 8:26 PM, Richard Tejera <Saguaroastro@xxx.xxx> wrote:
> Last time I recall that grid being activated was 7 Aug 2011, when Dave
Palmer KB5WIA worked the corner of CN70,CN80,CM79 & CM89.
>
> He put a lot of effort to work that corner, and really appreciated it.
Those four grids gave me my VUCC (#227).
>
> 73
> Rick
> K7TEJ
>
> On June 11, 2014, at 19:51, Glenn Miller - AA5PK wrote:
>
> I worked Joe/NU6O in Eureka, CA, (CN70) on the 0250Z FO-29 pass. Fairly
rare, mostly water grid.
>
> 73
> Glenn AA5PK
>
> _______________________________________________
> 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: 3
Date: Fri, 13 Jun 2014 16:47:34 +0100 (BST)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] TabletSat-Aurora has D-STAR + Summer OSCAR News
released
Message-ID:
<1402674454.2607.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
TabletSat-Aurora on the Yasny Dnepr launch planned for June 19 will use 8192
MHz and two 435 MHz channels. The Russian language article says there will
also be a D-STAR payload for radio amateurs on 437.050 MHz
http://www.sputnix.ru/ru/mediainfo/item/351-pervyj-rossijskij-tabletsat-gotov-
k-poletu
The Summer issue of OSCAR News now available and features Brent Salmi KB1LQD
and Bryce Salmi KB1LQC at the National Radio Centre in Bletchley Park, UK
where they met up with AMSAT-UK's Graham Shirville G3VZV.
http://amsat-uk.org/2014/06/13/summer-issue-of-oscar-news-now-available/
Special event station GB1JSS on the satellites for Summer Solstice
http://amsat-uk.org/2014/06/11/gb1jss-summer-solstice/
Her Majesty Queen Elizabeth II shown radio ham?s Raspberry Pi balloon payload
http://amsat-uk.org/2014/06/11/queen-shown-radio-hams-raspberry-pi-balloon-pay
load/
50th anniversary of historic Chelmsford EME contact
http://amsat-uk.org/2014/06/08/50th-anniversary-of-historic-chelmsford-eme-con
tact/
----
Trevor M5AKA
AMSAT-UK
Website http://amsat-uk.org/
Facebook https://www.facebook.com/amsatuk
Twitter https://twitter.com/AMSAT_UK
----
------------------------------
Message: 4
Date: Fri, 13 Jun 2014 17:04:11 +0000
From: B J <va6bmj@xxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] SpaceX Launch Delayed Again
Message-ID:
<CAP7QzkO+uSVWV2uFOtQqDm=J4pFCJuYiByVyOGN9-N6fQ8fGNA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
http://www.parabolicarc.com/2014/06/13/falcon-9-launch-delayed-2/
An earlier news item on delays for upcoming SpaceX and Orbital launches:
http://www.nasaspaceflight.com/2014/06/commercial-duo-refine-upcoming-launch-d
ates/
73s
Bernhard VA6BMJ @ DO33FL
------------------------------
Message: 5
Date: Fri, 13 Jun 2014 21:33:22 +0100
From: "Jim Heck" <jimlist@xxxx.xxx>
To: "'AMSAT BB'" <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] FUNcube/AO-73 Mode change
Message-ID: <001b01cf8746$b9b8f300$2d2ad900$@xxx>
Content-Type: text/plain; charset="US-ASCII"
Hi Folks,
FUNcube/AO-73 is now in continuous transponder mode with low power
beacon, as at approx 20:24 UTC. Change back to Auto eclipse mode planned
for
Sunday PM UTC.
Enjoy the transponder
73s Jim G3WGM
------------------------------
Message: 6
Date: Fri, 13 Jun 2014 22:39:54 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] AO-7
Message-ID:
<1652515753.3137826.1402699194238.JavaMail.root@xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
At 2231Z AO-7 downlink quit. In full sun, any ideas?
73 Bob W7LRD
------------------------------
Message: 7
Date: Fri, 13 Jun 2014 17:47:32 -0500
From: "Glenn Miller - AA5PK" <aa5pk@xxxxxxxxxx.xxx>
To: "Bob- W7LRD" <w7lrd@xxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] AO-7
Message-ID: <AF84BC60462B4C3594B2A2A5B2F17B09@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Bob,
Some QRO CW station was hammering the transponder, forcing the mode change.
Glenn AA5PK
-----Original Message-----
From: Bob- W7LRD
Sent: Friday, June 13, 2014 5:39 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] AO-7
At 2231Z AO-7 downlink quit. In full sun, any ideas?
73 Bob W7LRD
_______________________________________________
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: Fri, 13 Jun 2014 19:04:23 -0400
From: "Andrew Glasbrenner" <glasbrenner@xxxxxxxxxx.xxx>
To: "'Bob- W7LRD'" <w7lrd@xxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] AO-7
Message-ID: <00b201cf875b$d1139950$733acbf0$@xxx>
Content-Type: text/plain; charset="US-ASCII"
I have a theory, and it's just a theory based on my time managing AO-51, and
looking at several of the older available publications that describe the
satellite.
AO-7 is barrel shaped, with solar panels around the outside of the barrel
(really an octagonal column shape). The top and bottom ends do not have
solar cells or panels. (AO-51 had panels on each Z end, but only half the
number of cells as the sides.) AO-7 is also magnetically stabilized, where
the bottom flat end and the VHF/UHF antenna array of the satellite points
towards magnetic north when in vicinity of the north magnetic pole (Northern
Canada).
If you look at the position of the sun, AO-7 and north magnetic polar during
most of the reported failures, the satellite is in a position where the sun
is shining down on the top, and only partially illuminating the panels on
the side, and at a very low (poor) angle. In this attitude, the power
generated drops, and the reset occurs, especially in the presence of strong
user signals.
There are other factors, including just the ageing of the solar cells
leading to a reduction in power generated, precession of the orbit, and
probably others.
Just food for thought.
73, Drew KO4MA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Bob- W7LRD
Sent: Friday, June 13, 2014 6:40 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] AO-7
At 2231Z AO-7 downlink quit. In full sun, any ideas?
73 Bob W7LRD
_______________________________________________
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: 9
Date: Sat, 14 Jun 2014 00:23:29 +0000 (UTC)
From: Bob- W7LRD <w7lrd@xxxxxxx.xxx>
To: Glenn Miller - AA5PK <aa5pk@xxxxxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] AO-7
Message-ID: <87016943.3171450.1402705409027.JavaMail.root@xxxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Thanks Glenn- I was on ssb when it just stopped. I did not know about this
forcing the mode change thing. So if too many station try to access the sat
it will just switch? I had a sked with G4DOL earlier today. Did not make it
but the satellite sounded good. Looking into JT65 EME.
73 Bob W7LRD
----- Original Message -----
From: "Glenn Miller - AA5PK" <aa5pk@xxxxxxxxxx.xxx>
To: "Bob- W7LRD" <w7lrd@xxxxxxx.xxx>, amsat-bb@xxxxx.xxx
Sent: Friday, June 13, 2014 3:47:32 PM
Subject: Re: [amsat-bb] AO-7
Bob,
Some QRO CW station was hammering the transponder, forcing the mode change.
Glenn AA5PK
-----Original Message-----
From: Bob- W7LRD
Sent: Friday, June 13, 2014 5:39 PM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] AO-7
At 2231Z AO-7 downlink quit. In full sun, any ideas?
73 Bob W7LRD
_______________________________________________
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: 10
Date: Fri, 13 Jun 2014 14:32:20 -1000
From: "Tom Worthington" <worth@xxxx.xxx>
To: <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] re AO-7
Message-ID: <008d01cf8768$1af276c0$50d76440$@xxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
It was in mode B for the pass at 0020z.
Low for me, 8 degrees maximum which is about the best I can do to the east.
I could copy my cw returns but not SSB.
I did not hear any other stations.
73, Tom, NH6Y, BL10ts
------------------------------
Message: 11
Date: Fri, 13 Jun 2014 19:28:13 -0700
From: Bob Cutter <ki0g@xxxxx.xxx>
To: Andrew Glasbrenner <glasbrenner@xxxxxxxxxx.xxx>
Cc: "<amsat-bb@xxxxx.xxx>" <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] AO-7
Message-ID: <577D64AC-755F-49EC-9B48-3AE2A11C88C3@xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Well said.
73, Bob KI?G
> On Jun 13, 2014, at 4:04 PM, "Andrew Glasbrenner"
<glasbrenner@xxxxxxxxxx.xxx> wrote:
>
> I have a theory, and it's just a theory based on my time managing AO-51, and
>
------------------------------
Message: 12
Date: Fri, 13 Jun 2014 23:00:48 -0400
From: Lizeth Norman <normanlizeth@xxxxx.xxx>
To: "<,amsat-bb@xxxxx.xxxxxxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] receiving APT on 137 MHz
Message-ID:
<CAJUhCTN65b6ogCZqB3KLk+m-=atw9UwgBMuYa0ee5S21Bf=v6w@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hi all!
What are people using to receive APT on 137 MHz?. Since I do have an az el
rotator, was possibly looking for a homebrew yagi design. What say you??
Norm n3ykf
Currently very bored in Lima, Peru.
------------------------------
Message: 13
Date: Fri, 13 Jun 2014 20:37:58 -0700
From: <kc6uqh@xxx.xxx>
To: "'Lizeth Norman'" <normanlizeth@xxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] receiving APT on 137 MHz
Message-ID: <004a01cf8782$092baff0$1b830fd0$@xxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Lizeth,
I suggest a 1/2 Wave 1/2 turn Quadra Filler Helix.
Art,
KC6UQH
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Lizeth Norman
Sent: Friday, June 13, 2014 8:01 PM
To: <,amsat-bb@xxxxx.xxxxxxx
Subject: [amsat-bb] receiving APT on 137 MHz
Hi all!
What are people using to receive APT on 137 MHz?. Since I do have an az el
rotator, was possibly looking for a homebrew yagi design. What say you??
Norm n3ykf
Currently very bored in Lima, Peru.
_______________________________________________
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: 14
Date: Sat, 14 Jun 2014 03:48:59 +0000
From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] receiving APT on 137 MHz
Message-ID: <539BC62B.2060406@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I have several ways to do it.
I have one of the old Hamtronix R139 crystal controlled receivers I
built from a "kit".
It wasn't what I'd really call a kit, more like a box of parts with some
instructions. It works fine once you get it operating.
I also have an old Radio Shack scanner I "converted" by pulling out the
IF filter and replacing it with a fixed capacitor. It also works "OK",
and considering I have about $5 in it, it's winner in the
"Bang-for-the-buck" category.
And lastly, I have several of the USB "dongles", including both versions
of the FunCube dongle.
They all work fine using an M2 2 Meter eggbeater with an SSB Electronic
2 Meter preamp mounted at 20'.
Yes, I know I'm using the antenna and preamp way "out of band", but it
doesn't seem to hurt. I get solid copy from when the APT birds are above
10*, and that's plenty good for me.
73, Jim KQ6EA
On 06/14/2014 03:00 AM, Lizeth Norman wrote:
> Hi all!
> What are people using to receive APT on 137 MHz?. Since I do have an az el
> rotator, was possibly looking for a homebrew yagi design. What say you??
> Norm n3ykf
> Currently very bored in Lima, Peru.
> _______________________________________________
> 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: Sat, 14 Jun 2014 06:54:37 -0500
From: Alan <wa4sca@xxxxx.xxx>
To: "'Jim Jerzycke'" <kq6ea@xxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] receiving APT on 137 MHz
Message-ID: <2BDEFFD9DB0F4157888213B071644CA3@xxxxxx>
Content-Type: text/plain; charset="US-ASCII"
As an experiment, I used a 2m J-pole, AMSAT/ARRL preamp, and FUNcube dongle
to get "acceptable"
reception. It was just a quick test, so I did not pursue the issue further.
73s,
Alan
WA4SCA
<-----Original Message-----
<From: amsat-bb-bounces@xxxxx.xxx
<[mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Jim Jerzycke
<Sent: Friday, June 13, 2014 10:49 PM
<To: amsat-bb@xxxxx.xxx
<Subject: Re: [amsat-bb] receiving APT on 137 MHz
<
<I have several ways to do it.
<
<I have one of the old Hamtronix R139 crystal controlled receivers I
<built from a "kit".
<
<It wasn't what I'd really call a kit, more like a box of parts
<with some
<instructions. It works fine once you get it operating.
<
<I also have an old Radio Shack scanner I "converted" by
<pulling out the
<IF filter and replacing it with a fixed capacitor. It also works "OK",
<and considering I have about $5 in it, it's winner in the
<"Bang-for-the-buck" category.
<
<And lastly, I have several of the USB "dongles", including
<both versions
<of the FunCube dongle.
<
<They all work fine using an M2 2 Meter eggbeater with an SSB
<Electronic
<2 Meter preamp mounted at 20'.
<
<Yes, I know I'm using the antenna and preamp way "out of band", but it
<doesn't seem to hurt. I get solid copy from when the APT birds
<are above
<10*, and that's plenty good for me.
<
<73, Jim KQ6EA
<
<On 06/14/2014 03:00 AM, Lizeth Norman wrote:
<> Hi all!
<> What are people using to receive APT on 137 MHz?. Since I do
<have an az el
<> rotator, was possibly looking for a homebrew yagi design.
<What say you??
<> Norm n3ykf
<> Currently very bored in Lima, Peru.
<> _______________________________________________
<> 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
<
------------------------------
_______________________________________________
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 9, Issue 195
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