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CX2SA > SATDIG 16.06.08 16:37l 905 Lines 21980 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. 2.4 GHz downconverters for sale (K & R Yoksh)
2. Spanish cubesat (rct(AT)uvigo.es)
3. Satellite Papers for IARU Region 1 Cavtat 08 Conference (Trevor)
4. Re: Spanish cubesat (Dave Guimont)
5. Satellites 101 (Tim Tuck)
6. Re: Spanish cubesat (Andrew Koenig)
7. Re: Satellites 101 (Tim Tuck)
8. DO-64 heard from 9M4CAN (sreem karini)
9. Re: DO-64 heard from 9M4CAN (Alan Cresswell)
10. Delfi-C3 / DO-64 status update 16 June 10:00 UTC
(Wouter Jan Ubbels)
11. Frequency Co-ordination. (John Hackett)
12. Oscar Satellite Status Page? (Doug Kuitula)
13. Re: Oscar Satellite Status Page? (Alan P. Biddle)
14. Re: Oscar Satellite Status Page? (Doug Kuitula)
15. Re: Frequency Co-ordination. (G0MRF(AT)aol.com)
16. AO-51 PBBS really on? (Alan P. Biddle)
----------------------------------------------------------------------
Message: 1
Date: Sun, 15 Jun 2008 14:03:40 -0500
From: "K & R Yoksh" <yokshs(AT)sbcglobal.net>
Subject: [amsat-bb] 2.4 GHz downconverters for sale
To: "Amsat BB" <amsat-bb(AT)amsat.org>
Message-ID: <00fb01c8cf1a$86d9f730$6401a8c0(AT)MAIN>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi,
I have two more S-band gear for sale. Pictures are available at the URL
under each item. Contact
me directly (not via the BB) at k0kn at amsat dot org.
* California Amplifier brand, model # 130003, consists of a downconverter
and integrated linear patch antenna. Can be mounted for either vertical
or horizontal polarization. Includes screw-on set of disc director elements.
144 MHz IF (2400 MHz = 143.55 MHz). $45 + s&h
http://www.qsl.net/k0kn/130003.jpg
* Same as above, but with 122 MHz IF instead (2400 MHz = 122.019 MHz)
$35 + s&h
http://www.qsl.net/k0kn/130003.jpg
These converters are capable of hearing AO-51, and can even be used as a
makeshift dish feed. I worked
AO-40 this way for a time! These should attach fairly easily to an Arrow
type antenna for mode V/s on
AO-51.
I also have two Cal Amp 31732 "dead ducks" that did work at one point in the
AO-40 days, but have since
stopped working. Can be used for parts, a signal source, or worst case, a
weatherproof enclosure with
one N female connector, and two F female connectors. Paint peeling on one
lid. $5 each
http://www.qsl.net/k0kn/31732.jpg
I had planned to follow the lead of GM1SXX, but have not yet found time to
convert these ducks. See his article:
"Project Duckling - or - Uses for Dead Drakes," The AMSAT Journal, May/Jun
2001, pp. 8-9.
73,
Kyle Yoksh
K0KN
Olathe, Kansas
------------------------------
Message: 2
Date: Sun, 15 Jun 2008 19:07:35 +0200
From: rct(AT)uvigo.es
Subject: [amsat-bb] Spanish cubesat
To: amsat-bb(AT)amsat.org
Message-ID: <20080615190735.4hojvf0uss44ck8w(AT)correoweb.uvigo.es>
Content-Type: text/plain; charset=ISO-8859-1; DelSp="Yes";
format="flowed"
Dear colleagues,
The Telecommunication School at Vigo University, Spain, is developing
a cubesat that will be launched by ESA. It will transmit in amateur
bands, and the University radioclub (EA1RCT) is collaborating in the
project. The design is not yet closed and we can send proposals to the
development team. The radioclub is willing to hear ideas from the
amateur radio comunity: we would like to have a short list ready by
next Thursday, June 26, so any proposal we receive before then will be
carefully read.
The satellite will be small and lightweight as you know, and it will
run on a short electrical budget. Moreover, the time schedule is very
tight. One of the main objectives is to test SDR systems in space (not
necessarily in amateur bands).
Neither the bands, power o full-duplex capability have been
established. It could eventually end up with just a telemetry beacon.
We would like to hear your opinions about what the amateur radio
community would prefer to carry on board, in these three scenarios:
? full-duplex communication capability (linear transponder, fm rep, etc)
? half-duplex systems (digipeater?)
? beacon modes (afsk, psk, cw)
Best regards,
EA1RCT RadioClub Telecomunicaciones Vigo
http://lostrego.uvigo.es
------------------------------
Message: 3
Date: Sun, 15 Jun 2008 20:53:15 +0000 (GMT)
From: Trevor <m5aka(AT)yahoo.co.uk>
Subject: [amsat-bb] Satellite Papers for IARU Region 1 Cavtat 08
Conference
To: AMSAT BB <amsat-bb(AT)amsat.org>
Message-ID: <929679.30594.qm(AT)web27201.mail.ukl.yahoo.com>
Content-Type: text/plain; charset=utf-8
A number of Amateur Satellite related papers will be submitted to the Cavtat
08 IARU Region 1 Conference, 16th to 21st November, including:
Sat Advisor Support for satellite frequency coordination
144 MHz increased satellite service
3400 MHz amateur satellite allocation
Microwave spectrum requirements
A new vision for 23 cm
Amateur satellites handbook chapter
Microwave spectrum requirements
VHF spectrum requirements
A link to the papers is available via:
IARU-R1 Cavtat papers available
http://www.southgatearc.org/news/may2008/cavtat_papers.htm
73 Trevor M5AKA
__________________________________________________________
Sent from Yahoo! Mail.
A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html
------------------------------
Message: 4
Date: Sat, 14 Jun 2008 16:05:07 -0700
From: Dave Guimont <dguimon1(AT)san.rr.com>
Subject: [amsat-bb] Re: Spanish cubesat
To: rct(AT)uvigo.es
Cc: amsat-bb(AT)amsat.org
Message-ID:
<20080615230511.PQKJ23887.cdptpa-omta02.mail.rr.com(AT)Dave.san.rr.com>
Content-Type: text/plain; charset="iso-8859-1"; format=flowed
>
>? full-duplex communication capability (linear transponder, fm rep, etc)
>? half-duplex systems (digipeater?)
>? beacon modes (afsk, psk, cw)
FULL DUPLEX LINEAR!!!
Thank you for asking....
73, Dave, WB6LLO
dguimon1(AT)san.rr.com
Disagree: I learn....
Pulling for P3E...
------------------------------
Message: 5
Date: Mon, 16 Jun 2008 08:57:36 +1000
From: "Tim Tuck" <tim.tuck(AT)penrith.net>
Subject: [amsat-bb] Satellites 101
To: AMSAT BB <amsat-bb(AT)AMSAT.Org>
Message-ID: <48559E60.4080803(AT)penrith.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Hi all,
I've been asked to give a "101" talk about satellites at my local radio club
and
before I go reinventing the wheel I was wondering if anyone has a slide deck
in
pdf or pps I could use ?
thanks
Tim
--
VK2XTT :: QF56if :: BMARC :: WIA :: AMSAT
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AntiSpam: SpamAssassin 3.2.3
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------------------------------
Message: 6
Date: Sun, 15 Jun 2008 16:51:49 -0500
From: "Andrew Koenig" <andrewkoenig(AT)thathamkid.com>
Subject: [amsat-bb] Re: Spanish cubesat
To: rct(AT)uvigo.es
Cc: amsat-bb(AT)amsat.org
Message-ID:
<2f52b89b0806151451t7deddd90l570e325173cd17f1(AT)mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
I know the transponder satellites have been getting smaller and smaller, but
I think an FM transponder in a cubesat would be amazing.
If no FM transponder, maybe some sort of digi-talker similar to SEEDS, where
it has a voice part and then an SSTV part. Either of these would be awesome.
Thanks, KE5GDB
On Sun, Jun 15, 2008 at 12:07 PM, <rct(AT)uvigo.es> wrote:
> Dear colleagues,
>
> The Telecommunication School at Vigo University, Spain, is developing
> a cubesat that will be launched by ESA. It will transmit in amateur
> bands, and the University radioclub (EA1RCT) is collaborating in the
> project. The design is not yet closed and we can send proposals to the
> development team. The radioclub is willing to hear ideas from the
> amateur radio comunity: we would like to have a short list ready by
> next Thursday, June 26, so any proposal we receive before then will be
> carefully read.
>
> The satellite will be small and lightweight as you know, and it will
> run on a short electrical budget. Moreover, the time schedule is very
> tight. One of the main objectives is to test SDR systems in space (not
> necessarily in amateur bands).
>
> Neither the bands, power o full-duplex capability have been
> established. It could eventually end up with just a telemetry beacon.
> We would like to hear your opinions about what the amateur radio
> community would prefer to carry on board, in these three scenarios:
>
> ? full-duplex communication capability (linear transponder, fm rep, etc)
> ? half-duplex systems (digipeater?)
> ? beacon modes (afsk, psk, cw)
>
>
> Best regards,
> EA1RCT RadioClub Telecomunicaciones Vigo
> http://lostrego.uvigo.es
>
>
>
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. 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
>
--
73's
Andrew K.
KE5GDB
http://www.thathamkid.com
------------------------------
Message: 7
Date: Mon, 16 Jun 2008 14:03:17 +1000
From: "Tim Tuck" <tim.tuck(AT)penrith.net>
Subject: [amsat-bb] Re: Satellites 101
To: AMSAT BB <amsat-bb(AT)amsat.org>
Message-ID: <4855E605.5020705(AT)penrith.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Tim Tuck wrote:
> Hi all,
>
> I've been asked to give a "101" talk about satellites at my local radio club
and
> before I go reinventing the wheel I was wondering if anyone has a slide deck
in
> pdf or pps I could use ?
>
Further to this, can someone send me the link for the cardboard cut-out
satellites so I can build up a mock up or two :)
I seem to have misplaced the bookmark for that !
thanks
Tim
--
VK2XTT :: QF56if :: BMARC :: WIA :: AMSAT
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Scanned with Copfilter Version 0.84beta3a (ProxSMTP 1.6)
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------------------------------
Message: 8
Date: Mon, 16 Jun 2008 03:58:02 +0000 (GMT)
From: sreem karini <sreemkarini(AT)yahoo.co.uk>
Subject: [amsat-bb] DO-64 heard from 9M4CAN
To: amsat-bb(AT)amsat.org
Message-ID: <324443.95992.qm(AT)web28603.mail.ukl.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
We heard DO-64 today but were unable to decode the telemetry downlink signal
as it did not sync with the RASCAL software.
?
Can anyone please advice.
?
73,
Shida (9W2YMY) & Sreem (9W2VSK)
__________________________________________________________
Sent from Yahoo! Mail.
A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html
------------------------------
Message: 9
Date: Mon, 16 Jun 2008 05:38:35 -0000
From: "Alan Cresswell" <alancresswell(AT)xtra.co.nz>
Subject: [amsat-bb] Re: DO-64 heard from 9M4CAN
To: <amsat-bb(AT)amsat.org>
Message-ID: <000001c8cf73$3b02b140$0501010a(AT)Cresswell2>
Content-Type: text/plain; charset="iso-8859-1"
Hi Sreem,
DO-64 can be difficult to sync without some sort of tuning aid. The signal
has two strong components equally spaced about the centre frequency and
these can easily confuse Rascal. If you display the signal on any program
that has a "Waterfall" display (e.g. "Spectran", "Ham Radio Delux" etc. you
can then tune your receiver so that the centre component is exactly on
1600Hz and then Rascal should decode OK.
I can send you a picture of the way the signal looks on a display if that
would help.
Good luck.
Alan
ZL2BX
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] On
Behalf Of sreem karini
Sent: Monday, 16 June 2008 03:58
To: amsat-bb(AT)amsat.org
Subject: [amsat-bb] DO-64 heard from 9M4CAN
We heard DO-64 today but were unable to decode the telemetry downlink signal
as it did not sync with the RASCAL software.
?
Can anyone please advice.
?
73,
Shida (9W2YMY) & Sreem (9W2VSK)
__________________________________________________________
Sent from Yahoo! Mail.
A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html
_______________________________________________
Sent via AMSAT-BB(AT)amsat.org. 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: Mon, 16 Jun 2008 12:08:41 +0200
From: "Wouter Jan Ubbels" <wjubbels(AT)gmail.com>
Subject: [amsat-bb] Delfi-C3 / DO-64 status update 16 June 10:00 UTC
To: AMSAT-BB <amsat-bb(AT)amsat.org>
Message-ID:
<af4c9b1b0806160308o4a089feeob1e098a338e8ee34(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Hi all,
another status update of the Delfi-C3 / DO-64 satellite:
1. The spacecraft continues to work fine, we have received over 270000
telemetry frames so far, thanks so much!
2. A magnificent model of the satellite, made by Stefan Wagener VE4NSA
is available on our photo weblog at
http://www.delfic3.nl/photoblog/
3. The spacecraft still experiences the downlink dropout issue, since
this is a non-critical issue, and since we are limited in our
possibilities to do something about it, we have decided to leave it as
it is. If the spacecraft's downlink is off when over our
groundstation, we will command it back on. Our expectation is that
this does not occur when the spacecraft is in transponder mode, so
once we switch it to that mode, it should be fine.
4. The TX distortion issue has turned out to be a separate issue
(contrary to our earlier assumptions, it is not related to the
dropouts), related to the behaviour of the (battery-less) power
system. This is also non-critical, and has shown to solve itself after
the spacecraft has rotated a bit more.
73 on behalf of the Delfi-C3 team,
Wouter Jan Ubbels PE4WJ
------------------------------
Message: 11
Date: Mon, 16 Jun 2008 12:54:00 +0200
From: John Hackett <archie.hackett(AT)hotmail.com>
Subject: [amsat-bb] Frequency Co-ordination.
To: <amsat-bb(AT)amsat.org>
Cc: allan_gm1sxx(AT)hotmail.com
Message-ID: <BLU149-W2133C005B18513AF98A2C691A90(AT)phx.gbl>
Content-Type: text/plain; charset="iso-8859-1"
I believe this mail ought to be forwarded to *ALL* amateur radio satellite
organisations.
We've - (GM1SXX & LA2QAA) - said it often enough in the last 10 years but if
we persist, somebody just might finally get the message.
Commander John Brannegan G4IHJ made us aware of the problem in 1994 ... so
far, to the best of my knowledge, it's been totally ignored.
Please *DO* note the last paragraph.
73 John. <la2qaa(AT)amsat.org>
To: eu-amsat(AT)yahoogroups.com
From: allan_gm1sxx(AT)hotmail.com
Date: Mon, 16 Jun 2008 08:33:45 +0000
Subject: [eu-amsat] The IARU, Satellite Frequency Co-ordination and the
CUBESAT Bands.
Hi Folks.
Having read through the material pointed to by Trevor, it seems the
case that unco-ordinated satellites and the proliferation of
University CUBESATs on 2M and 70Cms (the prime bands for linear
transponder birds), are indeed a problem that is not being addressed,
or about to be addressed, any time soon. Sure, there will be talk
about addressing the problem, but that's all.
As best I can understand, the IARU believes it is an issue for local
(National) radio societies. With no-one 'steering the ship', as it
were, it's hardly any wonder it ran aground a long time ago.
Complaining to your national radio society is unlikely to carry much
clout for a satellite builder at the other end of the world. In
short, it's a free-for-all.
It's not a new problem either, see Altruistic radio amateurs (1994)
ftp://ftp.amsat.org/amsat/articles/satgen/sgen268.txt
John GM4IHJ noted this growing problem 14 *years* ago, and yet nobody
seems to care. Perhaps we really do get what we deserve.
It's likely that AMSAT will be a forgotten organisation once the two
most useful band segments we are allowed are littered with 'me-too'
satellites.
Can you imagine a future scenario....not too far in the future.
'Linear transponders on 2m & 70Cms?'.... don't be silly, those are the
Cubesat bands :-).
73 Al.
GM1SXX
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Message: 12
Date: Mon, 16 Jun 2008 07:52:23 -0400
From: "Doug Kuitula" <ka8qcu(AT)pasty.net>
Subject: [amsat-bb] Oscar Satellite Status Page?
To: <amsat-bb(AT)AMSAT.Org>
Message-ID: <001201c8cfa7$736d7360$05ef6742(AT)net>
Content-Type: text/plain; charset="iso-8859-1"
Hi all,
Is anyone else having trouble getting into the Oscar Satellite Status Page? I
haven't been able to access it for a few days.
I don't have an e-mail address for KD5QGR to let him know.
73 de Doug KA8QCU
------------------------------
Message: 13
Date: Mon, 16 Jun 2008 07:08:33 -0500
From: "Alan P. Biddle" <APBIDDLE(AT)UNITED.NET>
Subject: [amsat-bb] Re: Oscar Satellite Status Page?
To: <amsat-bb(AT)amsat.org>
Message-ID: <68D17EAD46884E539E3209E3049E54A6(AT)WA4SCA>
Content-Type: text/plain; charset="us-ascii"
Doug,
Working fine this morning using either IE or Firefox. What is it doing?
Hanging at loading the page, giving you error messages, or ???
I don't normally use the page, but often check the AO-51 dedicated links.
Recently, I have noticed that often, but not always, the first time I try I
get a page of error messages, but the next and subsequent clicks take me
there.
Alan
WA4SCA
------------------------------
Message: 14
Date: Mon, 16 Jun 2008 08:34:18 -0400
From: "Doug Kuitula" <ka8qcu(AT)pasty.net>
Subject: [amsat-bb] Re: Oscar Satellite Status Page?
To: <APBIDDLE(AT)MAILAPS.ORG>, <amsat-bb(AT)amsat.org>
Message-ID: <000c01c8cfad$4edda6e0$05ef6742(AT)net>
Content-Type: text/plain; charset="iso-8859-1"
I'm using IE. It states that the page cannot be displayed. I haven't made
any changes. Maybe it's with my ISP.
----- Original Message -----
From: "Alan P. Biddle" <APBIDDLE(AT)UNITED.NET>
To: <amsat-bb(AT)amsat.org>
Sent: Monday, June 16, 2008 08:08
Subject: [amsat-bb] Re: Oscar Satellite Status Page?
> Doug,
>
> Working fine this morning using either IE or Firefox. What is it doing?
> Hanging at loading the page, giving you error messages, or ???
>
> I don't normally use the page, but often check the AO-51 dedicated links.
> Recently, I have noticed that often, but not always, the first time I try
I
> get a page of error messages, but the next and subsequent clicks take me
> there.
>
> Alan
> WA4SCA
>
>
>
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. 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: Mon, 16 Jun 2008 08:35:32 EDT
From: G0MRF(AT)aol.com
Subject: [amsat-bb] Re: Frequency Co-ordination.
To: la2qaa(AT)amsat.org, amsat-bb(AT)amsat.org
Message-ID: <d15.2797e569.3587b814(AT)aol.com>
Content-Type: text/plain; charset="US-ASCII"
Hi Archie.
All 22 teams who were persuing the Free ESA ride to space on the Vega
launcher were given a presentation on how to apply for a frequency via the
IARU
co-ordinating process.
Thanks
David
In a message dated 16/06/2008 10:57:37 GMT Standard Time,
archie.hackett(AT)hotmail.com writes:
I believe this mail ought to be forwarded to *ALL* amateur radio satellite
organisations.
We've - (GM1SXX & LA2QAA) - said it often enough in the last 10 years but if
we persist, somebody just might finally get the message.
------------------------------
Message: 16
Date: Mon, 16 Jun 2008 07:44:11 -0500
From: "Alan P. Biddle" <APBIDDLE(AT)UNITED.NET>
Subject: [amsat-bb] AO-51 PBBS really on?
To: "AMSAT-BB" <amsat-bb(AT)amsat.org>
Message-ID: <65CEA50543F04FD989216D077BC62057(AT)WA4SCA>
Content-Type: text/plain; charset="us-ascii"
Hi,
Decided to blow the dust off WISP and try the BBS. Downlink is rock solid
using either WISP or TLMECHO, but I have not been able to request a
directory. I have the current PECHO-11 and PECHO-12, and plenty of mode L
ERP. It has been a while since I operated LS, but the uplink frequency was
netted in and the TNC deviation was ~ 3Kz the last time I checked with no
relevant changes. There hasn't been anybody in the queue on any of the
passes.
Before I break out the deviation and frequency meters, anybody operated
successfully this round, and any suggestions if so?
Alan
WA4SCA
-----------------------------------
There is something fascinating about science.
One gets such wholesale returns of conjecture
from such a trifling investment of fact.
Mark Twain
------------------------------
_______________________________________________
Sent via amsat-bb(AT)amsat.org. 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
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