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CX2SA > SATDIG 07.10.09 21:07l 699 Lines 21474 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: A0-27 Website (George Henry)
2. Re: [Hearsat] Opinions on receivers (Jim Jerzycke)
3. Re: [Hearsat] Opinions on receivers (Loren Moline WA7SKT)
4. UWE-2 news? (andy thomas)
5. CubeSat article in SatMagazine (Trevor .)
6. Re: Understanding ITAR (rwmcgwier@xxxxx.xxxx
7. Re: Radio Amateurs supporting a mission in space (video) (Joe)
8. Re: UWE-2 news? (Mike Rupprecht)
9. FT-897 CAT Control (Jesse Morris)
10. Re: FT-897 CAT Control (Nigel Gunn G8IFF/W8IFF)
11. RG316 / Ireland (Amateur Radio Station W4MPS)
12. Nice video on amateur satellite and supporting space science
(Fabiano Moser)
----------------------------------------------------------------------
Message: 1
Date: Tue, 6 Oct 2009 23:09:08 -0500
From: "George Henry" <ka3hsw@xxx.xxx>
Subject: [amsat-bb] Re: A0-27 Website
To: "Rick - WA4NVM" <wa4nvm@xxxxxxx.xxx>, "amsat bb"
<amsat-bb@xxxxx.xxx>
Message-ID: <A955DCB0EFB04637933C3B1EA0BA3722@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
There is a newer version of the AO-27 schedule utility that updates every 10
seconds... it is available for download at
<http://sites.google.com/site/ao27satellitescheduler>
Enjoy!!!
George, KA3HSW
----- Original Message -----
From: "Rick - WA4NVM" <wa4nvm@xxxxxxx.xxx>
To: "David Wing" <david@xxxxxx.xxx>; "'AMSAT BB'" <amsat-bb@xxxxx.xxx>
Sent: Tuesday, October 06, 2009 4:52 PM
Subject: [amsat-bb] Re: A0-27 Website
>
> David,
>
> Thanks for the url for the utility. And Congrats working John, W6ZKH the
> other day to get AL in your log.
>
> CU on the birds,
> Rick
>
>
>
>> Rick,
>>
>> Not sure about the AO-27 website but for tracking the TOPR, I use a
>> little
>> utility called "AO-27 Satellite Schedule"
>>
>> You can download this at:
>>
>> http://www.cs.rit.edu/~cjh9783/programs/satsched.php
>>
>>
>> Good contact this afternoon on AO-27...the QRN cleared just long enough
>> to
>> hear you call me after I told K8YSE there was too much noise to
>> understand
>> him.
>>
>> 73
>> David
>> K6CDW
>>
>> -----Original Message-----
>> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
>> Behalf Of Rick - WA4NVM
>> Sent: Tuesday, October 06, 2009 2:02 PM
>> To: AMSAT BB
>> Subject: [amsat-bb] A0-27 Website
>>
>> Hi All,
>>
>> Does anyone know what has happened to the A0-27 website? It hasn't
>> worked
>> for
>> over three days. So far, I just have to track and listen for the bird to
>> turn on.
>>
>> Thanks for any information,
>> Rick - WA4NVM
>> _______________________________________________
>> 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-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 2
Date: Tue, 6 Oct 2009 21:15:30 -0700 (PDT)
From: Jim Jerzycke <kq6ea@xxxxxxx.xxx>
Subject: [amsat-bb] Re: [Hearsat] Opinions on receivers
To: smeuse@xxxx.xxxx "Greg D." <ko6th_greg@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxxx lmoline@xxxxxxx.xxx
Message-ID: <311501.83002.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
There's quite a list of things for the R7000 on the mods.dk website.
Jim KQ6EA
--- On Tue, 10/6/09, Greg D. <ko6th_greg@xxxxxxx.xxx> wrote:
> From: Greg D. <ko6th_greg@xxxxxxx.xxx>
> Subject: [amsat-bb] Re: [Hearsat] Opinions on receivers
> To: smeuse@xxxx.xxx
> Cc: amsat-bb@xxxxx.xxxx lmoline@xxxxxxx.xxx
> Date: Tuesday, October 6, 2009, 8:41 PM
>
> REALLY?? Great tip!? It's never been a great
> receiver, but anything will help.
>
> I'll do some Googling around, but would you happen to have
> a pointer to more detailed information on the repair?
>
> Thanks,
>
> Greg.
>
>
> > Date: Tue, 6 Oct 2009 23:24:49 -0400
> > From: smeuse@xxxx.xxx
> > To: ko6th_greg@xxxxxxx.xxx
> > CC: amsat-bb@xxxxx.xxxx
> lmoline@xxxxxxx.xxx
> > Subject: Re: [amsat-bb] Re: [Hearsat] Opinions on
> receivers
> >
> > Greg D. expunged (ko6th_greg@xxxxxxx.xxxxx
> >
> > >
> > > But, as a general coverage receiver or scanner,
> it's 20-year age clearly shows.? First of all, it's a
> bit deaf by modern standards.? The local NWS weather
> channel is an S6 or S7, being fed by a very large TV
> antenna, with Preamp, in the attic.? It's full scale on
> my HT with its rubber duck antenna in the shack.? My
> S-band equipment (Drake 2880, and all that) barely gets
> above S1 or S2.? You get the idea.
> >
> > Keep in mind that the lack of receive sensitivity in
> the R7000 most likely is due to old leaking electrolytic
> caps. Specifically, there is a DC-DC converter board on the
> underside of the receiver that ends up generating broadband
> noise as the caps fail over time. I recently rebuilt this
> board and have regained nearly all of the sensitivity that
> I've lost. I suspect that if I replaced more electrolytics I
> could have it back to factory specs.
> >
> >
> > -Steve
> >
> > N1JFU -? http://n1jfu.blogspot.com -
> smeuse@xxxxxxx
> >
> ???
> ????????
> ?????? ???
> ?
> _________________________________________________________________
> Your E-mail and More On-the-Go. Get Windows Live Hotmail
> Free.
> http://clk.atdmt.com/GBL/go/171222985/direct/01/
> _______________________________________________
> 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: Tue, 6 Oct 2009 20:48:28 -0700
From: "Loren Moline WA7SKT" <lmoline@xxxxxxx.xxx>
Subject: [amsat-bb] Re: [Hearsat] Opinions on receivers
To: <ko6th_greg@xxxxxxx.xxx>, <smeuse@xxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <COL102-W171E5CC0C1F16CDA0CB8E1AFCD0@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Hello guys,
One other thing I have found is that the tracking of the varactor tuning may
not be as good as it once was. As far as the capacitors I looked at my
receiver and being a newer production it does not have the same DC board as
the older serial numbers. My DC board looks good and I scoped the DC lines
and they are clean..
I have more testing and possibly a re-align of the bandpass filters to do
but for now the receiver is ok...
I want a second receiver and thats why I asked about receivers.
Loren WA7SKT
Member: ARRL and Pacific Northwest VHF Society
Member: Hearsat Satellite Monitoring Group
Location: CN86cx
From: ko6th_greg@xxxxxxx.xxx
To: smeuse@xxxx.xxx
CC: amsat-bb@xxxxx.xxxx lmoline@xxxxxxx.xxx
Subject: RE: [amsat-bb] Re: [Hearsat] Opinions on receivers
Date: Tue, 6 Oct 2009 20:41:20 -0700
REALLY? Great tip! It's never been a great receiver, but anything will help.
I'll do some Googling around, but would you happen to have a pointer to more
detailed information on the repair?
Thanks,
Greg.
> Date: Tue, 6 Oct 2009 23:24:49 -0400
> From: smeuse@xxxx.xxx
> To: ko6th_greg@xxxxxxx.xxx
> CC: amsat-bb@xxxxx.xxxx lmoline@xxxxxxx.xxx
> Subject: Re: [amsat-bb] Re: [Hearsat] Opinions on receivers
>
> Greg D. expunged (ko6th_greg@xxxxxxx.xxxxx
>
> >
> > But, as a general coverage receiver or scanner, it's 20-year age clearly
shows. First of all, it's a bit deaf by modern standards. The local NWS
weather channel is an S6 or S7, being fed by a very large TV antenna, with
Preamp, in the attic. It's full scale on my HT with its rubber duck antenna
in the shack. My S-band equipment (Drake 2880, and all that) barely gets
above S1 or S2. You get the idea.
>
> Keep in mind that the lack of receive sensitivity in the R7000 most likely
is due to old leaking electrolytic caps. Specifically, there is a DC-DC
converter board on the underside of the receiver that ends up generating
broadband noise as the caps fail over time. I recently rebuilt this board
and have regained nearly all of the sensitivity that I've lost. I suspect
that if I replaced more electrolytics I could have it back to factory specs.
>
>
> -Steve
>
> N1JFU - http://n1jfu.blogspot.com - smeuse@xxxxxxx
>
Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. Sign up now.
------------------------------
Message: 4
Date: Wed, 7 Oct 2009 00:32:58 -0700 (PDT)
From: andy thomas <andythomasmail@xxxxx.xx.xx>
Subject: [amsat-bb] UWE-2 news?
To: amsat <amsat-bb@xxxxx.xxx>
Message-ID: <275565.68771.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Any news of UWE-2? I have never heard her and I see a relevant observation
on the DK3WN satblog.
73 de andy g0sfj
------------------------------
Message: 5
Date: Wed, 7 Oct 2009 09:50:14 +0000 (GMT)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
Subject: [amsat-bb] CubeSat article in SatMagazine
To: amsat-bb@xxxxx.xxx
Message-ID: <354691.4736.qm@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Page 43 of the October issue of SatMagazine features an article on CubeSats
titled 'A Costing + Pricing Challenge', see
http://www.satmagazine.com/2009/SatMag_Oct09.pdf
73 Trevor M5AKA
Daily Amateur Radio Email/RSS news: http://www.southgatearc.org/
----
------------------------------
Message: 6
Date: Wed, 7 Oct 2009 10:55:00 +0000
From: rwmcgwier@xxxxx.xxx
Subject: [amsat-bb] Re: Understanding ITAR
To: "Greg D" <ko6th_greg@xxxxxxx.xxx>, "amsat bb" <amsat-bb@xxxxx.xxx>
Message-ID:
<40976677-1254912797-cardhu_decombobulator_blackberry.rim.net-194712776-@xxxxx
x.xxxx.xxxx.xx.xxxxxxxxxx>
Content-Type: text/plain; charset="Windows-1252"
It is. The book is available under the creative common license. Rules for
ITAR and security procedures where ridiculous candidates are treated guilty
until proven innocent kill the system. The calculation is explained
beautifully by Doctorow in his "false positives" section.
I read a couple of chapters after pdf download and then bought the hardback
to provide support (and I love books).
73
Bob
N4HY
Sent from my Verizon Wireless BlackBerry
-----Original Message-----
From: Greg D. <ko6th_greg@xxxxxxx.xxx>
Date: Mon, 5 Oct 2009 22:21:21
To: <rwmcgwier@xxxxx.xxx>; <amsat-bb@xxxxx.xxx>
Subject: RE: [amsat-bb] Re: Understanding ITAR
> Date: Mon, 5 Oct 2009 07:14:42 -0400
> From: rwmcgwier@xxxxx.xxx
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Re: Understanding ITAR
>
> I want everyone seeing this to read a book. Little Brother by Cory
> Doctorow is a book aimed at late teens to young adults. This is
> irrelevant. It is a must read for anyone who doesn't understand the
> nature of the problems. It is a DEVASTATING treatment of several
> current event topics, including anti-terrorism approaches, internet
> privacy, and more.
>
If anyone's interested, the complete text appears to be available from Cory
on the Web:
http://craphound.com/littlebrother/Cory_Doctorow_-_Little_Brother.htm
I assume this is the work you are referring to... Haven't read past the
introduction, but it looks interesting.
Greg KO6TH
_________________________________________________________________
Your E-mail and More On-the-Go. Get Windows Live Hotmail Free.
http://clk.atdmt.com/GBL/go/171222985/direct/01/
------------------------------
Message: 7
Date: Wed, 07 Oct 2009 07:15:55 -0400
From: Joe <jbarkley@xxxxxxxx.xxx>
Subject: [amsat-bb] Re: Radio Amateurs supporting a mission in space
(video)
To: "Henk, PA3GUO" <hamoen@xxx.xx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4ACC786B.3090304@xxxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Very Nice Video Henk. It was fun and interesting to have participated
in supplying data. I will forward this along to a few who wonder
what all this aluminum if for in my field.
73,
Joe
KI4TZ
Henk, PA3GUO wrote:
> Dear all,
>
> Very often I find it difficult to explain to 'outsiders' what HAM radio is
all about.
>
> Therefore I have released a short video on YouTube about the recent ANDE-2
> experiments and how radio amateurs world-wide contributed to this mission.
>
> When I was young I watched the first Space Shuttle flight on TV. A far away,
> fantastic scientific event. Many years later we as radio amateurs are given
> opportunities to engage directly in space-experiments. It's a thrill !
>
> Featured in the video are the launch and deploy from STS-127, as well as
> reception and decoding of the satellite's radio signals received from space.
>
> http://www.youtube.com/watch?v=WGvRnqII0j8
> For highest quality ensure you enable HD (it does slow-down the download a
bit though)
>
> Best regards,
> Henk, PA3GUO
>
>
>
> _______________________________________________
> 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: Wed, 7 Oct 2009 13:28:06 +0200 (MEST)
From: "Mike Rupprecht" <mail@xxxxxxxxxxxxxx.xx>
Subject: [amsat-bb] Re: UWE-2 news?
To: "andy thomas" <andythomasmail@xxxxx.xx.xx>, "amsat"
<amsat-bb@xxxxx.xxx>
Message-ID: <200910071128.n97BS6sl015490@xxxx.xxxxxxxxx.xx>
Content-Type: text/plain; charset="ISO-8859-1"
Andy,
they disabled the beacon to save energy.
73, Mike
DK3WN
----- original Nachricht --------
Betreff: [amsat-bb] UWE-2 news?
Gesendet: Mi, 07. Okt 2009
Von: andy thomas<andythomasmail@xxxxx.xx.xx>
> Any news of UWE-2? I have never heard her and I see a relevant observation
> on the DK3WN satblog.
>
> 73 de andy g0sfj
>
>
>
>
> _______________________________________________
> 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
>
--- original Nachricht Ende ----
------------------------------
Message: 9
Date: Wed, 07 Oct 2009 10:38:02 -0400
From: "Jesse Morris" <w4mvb@xxxxxxx.xxx>
Subject: [amsat-bb] FT-897 CAT Control
To: <amsat-bb@xxxxx.xxx>
Message-ID: <ED915188D8774541B6952C40749B3FDB@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"
There have been several posts here and elsewhere that suggest that it is not
possible to change the frequency of the FT-897 via CAT during transmit. Is
that really true? If it is that would seem to make it unsuitable for
satellite operations but I know many people use it (and the 817/857).
Thanks for the info.
de Jess - W4MVB
------------------------------
Message: 10
Date: Wed, 07 Oct 2009 14:48:50 +0000
From: Nigel Gunn G8IFF/W8IFF <nigel@xxxxx.xxx>
Subject: [amsat-bb] Re: FT-897 CAT Control
To: Jesse Morris <w4mvb@xxxxxxx.xxx>
Cc: amsat-bb@xxxxx.xxx
Message-ID: <4ACCAA52.7070504@xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8; format=flowed
Its true
You cannot tune or receive whilst transmitting.
Jesse Morris wrote:
> There have been several posts here and elsewhere that suggest that it is
not possible to change the frequency of the FT-897 via CAT during transmit.
Is that really true? If it is that would seem to make it unsuitable for
satellite operations but I know many people use it (and the 817/857).
>
------------------------------
Message: 11
Date: Wed, 7 Oct 2009 12:15:51 -0400
From: "Amateur Radio Station W4MPS" <W4MPS@xx.xx.xxx>
Subject: [amsat-bb] RG316 / Ireland
To: <amsat-bb@xxxxx.xxx>
Message-ID: <9123AA017E9A4665AD6FE643067AE190@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset="us-ascii"
Many thanks for the replies re RG316 and also for the several links showing
coax
comparison charts. Very helpful. I'm old school and familiar with RG58 and
RG8,
and started to get confused when they came out with 9913. With all the new
stuff, I'm clueless, HI.
I'm using a 6 Ft length of RG316 with an SMA connector at one end for my
handheld, and a PL259 type on the other end for the Elk. So no adapters,
which I
like. That gives me plenty of length for waving around the Elk during a
pass.
So far, I don't see any obvious degradation of signals compared to my RG58
cable
with adapters, although I have no way of measuring. Bottom line...if I can
work
'em, I'll be happy. The small diameter cable will be great for traveling.
I'll
keep field testing until we leave next week.
I'll be QRV from County Cork, Ireland from October 16 through October 26.
Most
of the time will be in Grid IO52, although we may also travel to IO42 and
IO51
(if the family ever lets us out of the pub). I've made a number of
transatlantic contacts to the UK and Portugal via AO-51 using my FT-60R at 5
Watts and an Arrow antenna from my previous QTH in New Jersey (FN20)standing
on
my back deck. I was blown away by the experience. Ireland is closer than
both
UK and Portugal so I see no reason why I shouldn't be able to make a few Q's
back home. So, keep an ear open for me when the mutual window is open. The
call will be EI/W4MPS.
73
Marc, W4MPS
Clayton, North Carolina
------------------------------
Message: 12
Date: Wed, 7 Oct 2009 18:51:56 +0100
From: Fabiano Moser <fabianomoser@xxxxx.xxx>
Subject: [amsat-bb] Nice video on amateur satellite and supporting
space science
To: amsat-bb <AMSAT-BB@xxxxx.xxx>
Message-ID:
<bf2deb8f0910071051k80bd024lc37e7432c2c715d4@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Re- sending.
Take time to watch!
Good Job Henk !
73 Fabiano
>
>> Hello all,
>>
>> In case you didn't see the announcement about a video produced by Henk,
below is the link. It is a really nice video showing amateur radio
contribution to space science. I plan on using this video when I give
presentations to high school students. I also plan on showing it to my
bosses so I
>> can get more science missions made available to the amateur radio
community.
>> These two satellites have been a learning experience. There are some
things I will want to do differently. I enjoyed getting reports from you and
working with you. I want to do it again and it looks like it may happen. We
have another science experiment in proposal and are starting to get some
>> funding. The mission will be to map the radiation environment in real
time. The trick will be to get the potentially large amount of data down.
9600 baud may not be fast enough. I will try to work something out to stay
within the common amateur radio gear. I may have to switch to KISS mode for
>> more compact data.
>>
>> Also, if anyone has captured any audio, hold on to it. I know one of the
experiments was to try out FX.25. This is an experimental protocol that
wraps forward error correction data around the standard AX.25 packet. This
method allows standard TNCs and software to decode error free packets
>> while allowing FX.25 decoders to recover AX.25 packets with a few bit
errors. We tried getting the FX.25 software completed but time constraints
have been the issue. Last Friday, we were able to test the FX.25 decoder on
some audio files and were able to recover corrupted packets. Our small
>> sample showed up to 50% recovery rate. We will be processing more audio
files. Our next step is to make the code available. It runs on linux only.
Our first problem was trying to get access to the raw data stream before any
AX.25 decoder. We were able to find where to tap the raw bit stream in
>> the soundmodem software and pipe it to our FX.25 decoder program. We will
write up some
>> documentation and release the software in the next couple weeks. You can
try running your audio files through the software and see if you see any
improvements.
>>
>> So, next question. How many people are running linux for their ground
station? How many would be interested? We are thinking for the next
satellite to develop a telemetry protocol with forward error correction that
will greatly improve packet decoding. We will target FM modulation since
that
>> is easier to track and capture. Since we only know how to program in
linux, we would target that platform. Anyone wanting to port to Windows or
Mac is welcomed to our code.
>>
>> Ivan
>>
>>
>>
>> http://www.youtube.com/watch?v=WGvRnqII0j8&feature=channel_page
>> (enable HD for best quality)
>>
>> 73, Henk
>>
>>
>>
>>
>>
>
>
> --
73
Fabiano Moser CR7/PY5RX
ARISS-PORTUGAL (Amateur Radio on the International Space Station)
Representative at Teleconference and Portugal Telebridge Coordinator.
AMRAD/AMSAT-CT
http://www.amrad.pt/ariss.php
"There is no great talent without great will. (Honor? de Balzac)"
------------------------------
_______________________________________________
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 4, Issue 522
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