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CX2SA > SATDIG 28.04.11 21:08l 399 Lines 14496 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V6 246
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Sent: 110428/1904Z @:CX2SA.LAV.URY.SA #:2391 [Minas] FBB7.00e $:AMSATBB6246
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. UT1FG/MM Photo Album (John Papay)
2. AO-51 reported down 27 April 2011 1200utc (Nick Lewis)
3. OSCAR-11 Report (Clive Wallis)
4. SO-50 question (Ronald Nutter)
5. Re: SO-50 question (Mark L. Hammond)
6. Re: Icom D-Star (Gregg Wonderly)
7. HudsonValleySatcomGroupNet Tonight At 8 PM
EDT-EcholinkN2EYH-L April28 (Cotejaune2@xxx.xxxx
8. Re: SO-50 question (Gould Smith)
9. More UT1FG/MM photos (John Papay)
----------------------------------------------------------------------
Message: 1
Date: Wed, 27 Apr 2011 23:39:25 -0400
From: John Papay <john@xxxxxx.xxx>
Subject: [amsat-bb] UT1FG/MM Photo Album
To: amsat-bb@xxxxx.xxx
Message-ID: <327997.74055.qm@xxxxxxx.xxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Yuri, UT1FG/MM, is currently in port at San Juan Puerto Rico.
Walt WP4T and his family drove over to San Juan yesterday to
attempt to see him. They were successful and were treated to
a red carpet tour of his ship the Mottler. They took pictures
and they are available for viewing on my website:
http://www.papays.com/sat
The Mottler is very modern and was just built in 2009. Yuri
has logged many miles on it since last October when I first heard
him on the satellites. He will fly home to the Ukraine later this
week.
I never did get the feedback from Yuri on the qsl procedure but I
will post what I think would work the best. Enjoy the photos and
thanks to Walt WP4T and his ham radio family for making the trip!
73,
John K8YSE
------------------------------
Message: 2
Date: Wed, 27 Apr 2011 19:34:18 +0100
From: "Nick Lewis" <nick.lewis@xxxxxxxxxx.xxx>
Subject: [amsat-bb] AO-51 reported down 27 April 2011 1200utc
To: <amsat-bb@xxxxx.xxx>
Message-ID: <001e01cc0509$bc0a54e0$341efea0$@xxxxx@xxxxxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
Hi All,
You know, I feel so guilty...
After goodness knows how many years, I decided to try satellite work again.
I read around, I took advice, and I purchased a nice new Kenwood TH-D72. It
arrived a couple of weeks ago, so I took it with me on vacation, programmed
the memories for Doppler and persuaded my XYL that what she really wanted to
do each afternoon of her holiday was listen to AO-51 passes... That was
fine. Using just the rubber duck, I copied every pass without trouble and no
divorce proceedings ensued. She's very tolerant after all these years...
We then returned home to find the shiny new Elk that I'd ordered from
AMSAT-UK waiting for me. Eagerly, I screwed my courage to the sticking point
and attempted to work the bird. (Without a great deal of success, I have to
admit, hopefully because the only two chances I've had so far have been
Sunday afternoons, when every amateur in Europe seems to be on..)
But, horror of horrors! As soon as I pointed my Elk at AO-51, this BBS
started filling up with messages about how the bird was going down all the
while!
I'm sorry, folks. I know it was my fault. I really meant to take my Evil
Genius' Prototype Satellite Killing Death Ray out of circuit before
transmitting. It was a honest mistake that could have happened to
anybody.... I promise not to do it again... :-)
73
Nick MW0JGE
P.S. Seriously, many thanks to all those who labour long and hard to make
satellites available to the likes of me. It is much appreciated.
-----------------------------------
Date: Wed, 27 Apr 2011 09:11:19 -0400
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] AO-51 reported down 27 April 2011 1200utc
To: Amsat - BBs <amsat-bb@xxxxx.xxx>
Message-ID: <BANLkTikhdW4-Emx_e9wsUhhcUzC52YCwog@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hello AO-51 Users,
We are receiving reports that AO-51 is down. It will be several hours
until a command station is in the footprint. We'll do try and get it
active as soon as possible.
73,
--
Mark L. Hammond [N8MH]
------------------------------
------------------------------
Message: 3
Date: Thu, 28 Apr 2011 11:37:02 +0100
From: Clive Wallis <clive@xxxxx.xx.xx>
Subject: [amsat-bb] OSCAR-11 Report
To: amsat <amsat-bb@xxxxx.xxx>
Message-ID: <4DB9434E.9090400@xxxxx.xx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
OSCAR-11 REPORT 27 April 2011
This report covers the period from 02 March to 27 April 2011 .
During this time the satellite has been heard from 03 to 13
March, 24 March to 03 April, 13 April to 23 April 2011. It is
expected to switch-on again 04 May until 14 May.
Excellent signals have been reported from stations located around
the world, and good copy obtained from decoded telemetry frames.
Transmissions are controlled by the watchdog timer, which has a
20.7 day cycle time, 10.35 days on, 10,35 days off. Solar
eclipses occur during every orbit, when signals are weaker. This
indicates that there is still some capacity remaining in the
battery.
The on-board clock is now very stable. It gained 12 seconds
during during the current reporting period. This is comparable
with its accuracy when the satellite was fully operational, when
it gained approximately one minute per year. However, there is
still an accumulated loss of 309 days, which has occurred during
eclipses of the last few years.
The VHF beacon frequency is 145.826 MHz. AFSK FM ASCII Telemetry
Reception reports have been received from Horatio CX8AF, Jerry
WB5LHD and Stefano IZ1GRJ. Many thanks.
At the present time, while OSCAR-11 is operating in a predictable
way, I no longer need direct reports or files by e-mail. However,
could all listeners continue to enter their reports on the
general satellite status website
http://oscar.dcarr.org/index.php. This is a very convenient and
easy to use facility, which shows the current status of all the
amateur satellites, and is of use to everyone. Reports around the
expected times of switch-on and switch-off are of special
interest, especially for times 12:00 - 17:00 and 22:00 - 07:00
UTC, to when the satellite is out-of-range in the UK.
A longer version of this report report is available on my
website, and new listeners to OSCAR-11 should read this for
further information. The URL is www.g3cwv.co.uk/oscar11.htm .
This page contains a links to the longer report, a short audio
clip to help you identify the satellite and a file of the last
telemetry received. The website also contains an archive of news
& telemetry data which is updated from time to time, and details
about using a soundcard or hardware demodulators for data
capture. There is also software for capturing data, and decoding
ASCII telemetry.
If you place this bulletin on a terrestrial packet network,
please use the bulletin identifier $BID:U2RPT155.CWV, to prevent
duplication.
73 Clive G3CWV xxxxx@xxxxx.xxx (please replace the x's by
g3cwv)
------------------------------
Message: 4
Date: Thu, 28 Apr 2011 08:21:22 -0500
From: "Ronald Nutter" <rnutter@xxxxxxxxxx.xxx>
Subject: [amsat-bb] SO-50 question
To: "amsat" <amsat-bb@xxxxx.xxx>
Message-ID:
<213da4ca0c467ca275773391ce5908a0.squirrel@xxxxx.xxxxxx.xxx>
Content-Type: text/plain;charset=iso-8859-1
I should know the answer to this one. I am looking at the satellite data
on SO-50. How many miles up in orbit is it from the ground (approx).
Trying to explain to a non-ham how far away the satellite is.
Ron
Ka4kyi
------------------------------
Message: 5
Date: Thu, 28 Apr 2011 09:38:17 -0400
From: "Mark L. Hammond" <marklhammond@xxxxx.xxx>
Subject: [amsat-bb] Re: SO-50 question
To: rnutter@xxxxxxxxxx.xxx
Cc: amsat <amsat-bb@xxxxx.xxx>
Message-ID: <BANLkTi=P=nHhA-YZRbuxyxpuUTpms8BKrA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
About 700km above the earth, or 435 miles. Your range will vary, of
course (it's 700km above you only during a 90 pass! other times, it's
more...)
That's less than the distance between Savannah, GA and Miami, FL!
73,
Mark N8MH
On Thu, Apr 28, 2011 at 9:21 AM, Ronald Nutter <rnutter@xxxxxxxxxx.xxx> wrote:
> I should know the answer to this one. ?I am looking at the satellite data
> on SO-50. ?How many miles up in orbit is it from the ground (approx).
> Trying to explain to a non-ham how far away the satellite is.
>
> Ron
> Ka4kyi
>
> _______________________________________________
> 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
>
--
Mark L. Hammond [N8MH]
------------------------------
Message: 6
Date: Thu, 28 Apr 2011 09:27:47 -0500
From: Gregg Wonderly <w5ggw@xxx.xxx>
Subject: [amsat-bb] Re: Icom D-Star
To: Tony Langdon <vk3jed@xxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4DB97963.8050502@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
One of the ways to look at the voice codec is as a "capacitor", "amplifier" or
some other component of you circuit design. Sure, it's single source, but if
you are careful about how you put it in, you can provide a switched circuit,
daughter board or some other path to alternative codecs. It just depends on
what your real desire is, and how complicated you want to make your system.
I.e; if you are worried about designing a system with a single source codec,
don't design it that way.
Sure we have open systems, but we also have single source systems, like
windows.
Many many people are content with saying, if it doesn't run on windows, I'm
not interested in it because that's all they've ever used. Or, even worse,
I'm
not supporting anything but windows because I don't know how to do that on
Linux, or Mac or B-OS or... Look at what is happening with Apple. Every
quarter they are reporting explosive growth in Mac sales (2x from same
period a
year ago for this past quarter) and other items. That is completely single
source stuff, but you can run windows or linux on a mac. People are finding
value in the package they see and are switching horses so to speak.
Everywhere in life we get to make choices, measure the good vs bad with our
own
skills and experiences etc. In the end, our choices and experiences are
controlled if not limited by any decision we make.
Don't think about this from the single vendor perspective. Think about this
from the "what can I do with this technology" perspective that is that heart
of
HAM radio experimentation.
Clearly ICOM is now understanding that if you can't access a repeater with
digital data services, then paying 2x the cost of an analog rig of the same
caliber just doesn't make sense to most people. Also, as this discussion has
illustrated, some of us have no interest in the whole of digital coded data
and
voice.
Gregg Wonderly
On 4/27/2011 9:33 PM, Tony Langdon wrote:
> At 11:33 AM 4/28/2011, you wrote:
>
>> I'd like to point out that it's difficult, at best, to participate when
>> you can't "roll your own". There are many codecs available out there
>> today that don't require purchasing a license to use. The biggest
>> pro the codec is proprietary, but
> there are implementations available, from a bare chip (at around $20)
> to the DV Dongle for people to play with. And there's a LOT of
> tinkering to be done without even decoding the audio, as many of the
> above people can attest to first hand. As far as I'm concerned, this
> argument is a furphy. There are open source implementations for just
> about everything else - gateways, repeaters, GMSK modem (using a
> soundcard), routing advertisements (ircDDB), everything except DPlus
> (though there is an open source functional equivalent - DExtra).
>
> 73 de VK3JED / VK3IRL
> http://vkradio.com
>
> _______________________________________________
> 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: 7
Date: Thu, 28 Apr 2011 12:30:09 EDT
From: Cotejaune2@xxx.xxx
Subject: [amsat-bb] HudsonValleySatcomGroupNet Tonight At 8 PM
EDT-EcholinkN2EYH-L April28
To: amsat-bb@xxxxx.xxx
Message-ID: <57af0.2fa0a84.3aeaf011@xxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
Hope to hear you all on the Net tonight .Please join us. On Echolink
N2EYH-L or the MT Beacon Repeater 146.970 pl 100. 73 Gary WA2AQH
------------------------------
Message: 8
Date: Thu, 28 Apr 2011 12:43:46 -0400
From: "Gould Smith" <gouldsmi@xxxxxxxxx.xxx>
Subject: [amsat-bb] Re: SO-50 question
To: <rnutter@xxxxxxxxxx.xxx>, "amsat" <amsat-bb@xxxxx.xxx>
Message-ID: <DC061522BF9F4832BE6C2E56AA147165@xxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi Ron,
Use a tracking program to help explain this. The altitude/height for SO-59
varies between 615-704 km above the earth because of the orbit. The range
depends upon the maximum elevation that the satellite reaches on each pass.
At the beginning of a pass for SO-50 the range is around 3000km and for each
pass the range will decrease until it is at TCA. The range at a 90 degree
pass over a QTH will be the same as the altitude.
The signal will have quite a bit of path loss difference due to the large
(3000 to 700 km) distances experienced during a pass. Generally the
beginning and ending signal will be around 3000km and the signal at TCA
depends upon the maximum elevation for that pass.
Gould
----- Original Message -----
From: "Ronald Nutter" <rnutter@xxxxxxxxxx.xxx>
To: "amsat" <amsat-bb@xxxxx.xxx>
Sent: Thursday, April 28, 2011 9:21 AM
Subject: [amsat-bb] SO-50 question
>I should know the answer to this one. I am looking at the satellite data
> on SO-50. How many miles up in orbit is it from the ground (approx).
> Trying to explain to a non-ham how far away the satellite is.
>
> Rphotos taken with his phone
during their visit with Yuri UT1FG/MM on the Mottler.
Lots of electronics on that ship. Thanks Walner!
http://www.papays.com/sat
73,
John K8YSE
------------------------------
_______________________________________________
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 246
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