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CX2SA > SATDIG 29.04.08 02:00l 663 Lines 20021 Bytes #999 (0) @ WW
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Subj: AMSAT-BB-digest V3 206
Path: IZ3LSV<I0TVL<CX2SA
Sent: 080429/0042Z @:CX2SA.LAV.URY.SA #:64298 [Minas] FBB7.00e $:64298-CX2SA
From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Congrats to Delfi-C3 and all other Cubesat teams
(William Leijenaar)
2. Delfi-C3 Pass OK (Dave Aitch)
3. Delfi-C3 heard over TU Delft Groundstation 1843 UTC
(Wouter Jan Ubbels)
4. witch object corresponde witch object (Pedro Cruz)
5. delfi-c3 1939utc pass in io92jp (Robert Turlington)
6. Strong signal from Delfi over Canada (Jean-Pierre Houle)
7. Delfi C-3 received 21:42UTC in JO40JA (Jens Kirsten)
8. DELFI-C3 heard in JN35 (Piero Baudino)
9. Re: Delfi-C3 HEARD, strong signal over the Delfi-C3
groundstat... (G0MRF(AT)aol.com)
10. Delphi C3 pass2023 (Alan Cresswell)
11. Delfi-C3 heard on pass 2115UTC over TU Delft Groundstation
(Wouter Jan Ubbels)
12. DelfiC3 21:15UTC report (Rob Hardenberg PE1ITR)
13. Correction: New Satellite Observations. (Colin Hurst)
14. Delfi C-3 tracking an keplerian elements (Jens Kirsten)
15. Delphi-C3 pass 2200 over ZL (Alan Cresswell)
16. Re: Delfi C-3 tracking an keplerian elements (Bruce Robertson)
17. Delfi-C3 not heard, SEEDS and CUTE heard (David)
18. Delfi question (Stargate)
----------------------------------------------------------------------
Message: 1
Date: Mon, 28 Apr 2008 12:39:33 -0700 (PDT)
From: William Leijenaar <pe1rah(AT)yahoo.com>
Subject: [amsat-bb] Congrats to Delfi-C3 and all other Cubesat teams
To: amsat-bb(AT)amsat.org
Message-ID: <643866.89386.qm(AT)web31804.mail.mud.yahoo.com>
Content-Type: text/plain; charset=us-ascii
Hi AMSATs,
I am happy to hear that the PSLV-C9 has safely delivered all the new ham
satellites in their orbit. My congratulations to all the people who have
worked on this. Also to the ISRO team, as I met some of them in 2005.
In 2005 the PSLV-C6 was the rocket that brought my transponder onboard VO-52
into space, and now some 3 years later the Delfi-C3 added another Dutch
transponder in space. It gives a great feeling when after many hours of work
the satellite is safe in space and doing its job.
Even after 3 years the memory that is still clear in my mind is the actual
launch of PSLV-C6, with the noise of the engine and extreem bright light from
the flame that comes out of the rocket engine. Finaly silence comes back and a
trail of smoke is left. Then its waiting for the first sign of life from the
satellite, what seems to take ages hihi.
I just checked the orbit of Delfi-C3 and the interresting thing that I
noticed is that Delfi-C3 and VO-52 are in the same orbit, even the hight is
almost the same. This can be interresting as one can hop from one to the other
satellite when they are passing.
However, VO-52 is little faster in speed than DELFI-C3 and somewhere in
May/June they will be almost at the same place. Wonder how that will work out
hihi...
Unfortunatly I have QRL at daytime, but Wednesday and Thursday is QRL off and
will have my ear listen to Delfi-C3 and all the other new sats.
Good job to all the teams,
Delfi-C3, SEEDS, Cute1.7, Compass-1, AAUSAT-II, and CANX-2
73 PE1RAH
William Leijenaar
---
______________________________________________________________________________
______
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know-it-all with Yahoo! Mobile. Try it now.
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------------------------------
Message: 2
Date: Mon, 28 Apr 2008 20:54:16 +0100
From: "Dave Aitch" <dave(AT)g1ocn.com>
Subject: [amsat-bb] Delfi-C3 Pass OK
To: <amsat-bb(AT)amsat.org>
Message-ID: <00ce01c8a969$a4297620$cd00a8c0(AT)pc5>
Content-Type: text/plain; charset="iso-8859-1"
Heard and sent only a couple of lines of TLM to the server
during the pass to the east of here, IO80SM, from 1940 to
about 1947 UTC.
Should be better prepared for the next pass.
73, Dave. G1OCN.
Portland. Dorset.
p.s. Disregard my last about which object to track.
------------------------------
Message: 3
Date: Mon, 28 Apr 2008 21:58:08 +0200
From: "Wouter Jan Ubbels" <wjubbels(AT)gmail.com>
Subject: [amsat-bb] Delfi-C3 heard over TU Delft Groundstation 1843
UTC
To: amsat-bb(AT)amsat.org
Message-ID:
<af4c9b1b0804281258g548712d8n2459bb24bfe1817a(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
All,
Delfi-C3 was heard again over the Delfi-C3 groundstation at 1843 UTC with
solid signals on 145.930MHz 1200bd BPSK, using the "old" TLE's which are
still on our mission ops page at:
http://www.delfic3.nl/index.php?option=com_content&task=view&id=93&Itemid=122
it's been a long and exciting day!
73
Wouter Jan Ubbels PE4WJ
------------------------------
Message: 4
Date: Mon, 28 Apr 2008 19:59:55 -0000
From: "Pedro Cruz" <pccu2jx(AT)sapo.pt>
Subject: [amsat-bb] witch object corresponde witch object
To: <AMSAT-BB(AT)amsat.org>
Message-ID: <001201c8a96a$6e4c49a0$6602a8c0(AT)pedro>
Content-Type: text/plain; charset="iso-8859-1"
HI to all
any one know witch object correspont witch sat.
Best 73 !
Pedro Cruz - CU2JX
------------------------------
Message: 5
Date: Mon, 28 Apr 2008 21:14:22 +0100
From: Robert Turlington <rob_g8ate(AT)hotmail.com>
Subject: [amsat-bb] delfi-c3 1939utc pass in io92jp
To: Amsat Buleitin Board <amsat-bb(AT)amsat.org>
Message-ID: <BAY112-W31631607B17486876948BCC0DE0(AT)phx.gbl>
Content-Type: text/plain; charset="Windows-1252"
Hi All
I copied a good pass of Delfi-c3 from 1939utc got lots of telemetry87 packets
in all but the transmissions stopped abruptly at approx 1945utcRegards Robert
G8ATE
_________________________________________________________________
100?s of prizes to be won at BigSnapSearch.com
http://www.bigsnapsearch.com
------------------------------
Message: 6
Date: Mon, 28 Apr 2008 15:38:29 -0400
From: Jean-Pierre Houle <colberthoule(AT)videotron.ca>
Subject: [amsat-bb] Strong signal from Delfi over Canada
To: amsat-bb(AT)amsat.org
Message-ID: <000801c8a967$6f98ce30$03f28242(AT)jp>
Content-Type: text/plain; charset=iso-8859-1
Very strong signal from Delfi telemetry transmitter on 15:07 U.T.C 28 April
2008.
Maximum elevation was 58 degres but was unable to synchronize de telemetry
decoding software,will have to get use of the doppler shift which was quite
high
for this pass that was almost overhead.
Set up here is: Receiver: Yaesu FT-726R
Antenna: Cushcraft 10 elements Yagi, Azimuth and
elevation controlled.
The bird was at the rendez-vous using the kepler elements downloaded from the
Delfi
website. Have recorded the entire pass in wav format.
Good work and congratulations to the Delfi team!
Best 73 to all!
Jean-Pierre VE2AHD
------------------------------
Message: 7
Date: Mon, 28 Apr 2008 22:18:39 +0200
From: Jens Kirsten <jens_kirsten(AT)yahoo.de>
Subject: [amsat-bb] Delfi C-3 received 21:42UTC in JO40JA
To: amsat-bb(AT)amsat.org
Message-ID: <4816311F.4020706(AT)yahoo.de>
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
Delfi C-3 received in JO40JA at 21:42 UTC on Monday 28th of April
Telemetry decoded with RASCAL software.
Great job by the Delfi C-3 Team!
Screenshot can be found here:
http://www.mydarc.de/dl2fjk/Delfi-C3_RASCAL.jpg
Best 73!
Jens - DL2FJK
------------------------------
Message: 8
Date: Mon, 28 Apr 2008 21:55:52 +0200
From: Piero Baudino <pbaudino(AT)formatnet.it>
Subject: [amsat-bb] DELFI-C3 heard in JN35
To: missioncontrol(AT)delfic3.nl, amsat-bb(AT)amsat.org
Message-ID: <48162BC8.8020909(AT)formatnet.it>
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
Dear all,
just heard the satellite during the pass starting at about 19.35 UTC.
The sat was transmitting on 145.930, I have used RASCAL to try to decode
the signal, but It was very difficult for me, it was very difficult to
"Sync" the signal, and so nothing was decoded.
My setup:
- ICOM IC-910H
- antenna KLM 2x7 el.
- signal sometimes better in RHCP, sometimes in LHCP
- signal about S3-S4
I'll try again tomorrow ....
Best '73 de Piero IZ1ERR
JN35UI - north west Italy
------------------------------
Message: 9
Date: Mon, 28 Apr 2008 16:27:38 EDT
From: G0MRF(AT)aol.com
Subject: [amsat-bb] Re: Delfi-C3 HEARD, strong signal over the
Delfi-C3 groundstat...
To: wjubbels(AT)gmail.com
Cc: amsat-bb(AT)amsat.org
Message-ID: <cee.31e8eba5.35478d3a(AT)aol.com>
Content-Type: text/plain; charset="US-ASCII"
Hi.
Received good signals from DelfiC3 tonight in IO91TK 15km west of London.
Nice to hear another satellite on 2m. Just love that low path loss!
145.930
IC706 + 10m RG58 to roof mounted vertical. No pre-amp. Signals 18dB above
noise.
Nominal distance to satellite 1400km
The signal abruptly disappeared at 19:45 and 5 seconds. ( Command from
ground station?) This was not the usual transistion as a satellite pases over
the
horizon
Anyway, strong signals so very good news.
Well done Delft University of Technology.
David
------------------------------
Message: 10
Date: Mon, 28 Apr 2008 21:17:12 -0000
From: "Alan Cresswell" <alancresswell(AT)xtra.co.nz>
Subject: [amsat-bb] Delphi C3 pass2023
To: <AMSAT-BB(AT)amsat.org>
Message-ID: <000001c8a975$3a5c62a0$0301010a(AT)Cresswell2>
Content-Type: text/plain; charset="us-ascii"
Nothing heard on the first sunlit pass over ZL. (20:23UT 10el X Yagi,
TS2000, AZ/El control) Perhaps related to loss of signal at 1945?
Alan
ZL2BX
------------------------------
Message: 11
Date: Mon, 28 Apr 2008 23:37:44 +0200
From: "Wouter Jan Ubbels" <wjubbels(AT)gmail.com>
Subject: [amsat-bb] Delfi-C3 heard on pass 2115UTC over TU Delft
Groundstation
To: amsat-bb(AT)amsat.org
Message-ID:
<af4c9b1b0804281437k4b63b1bfod1fdecf919720785(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Hi all,
we heard Delfi-C3 again on the 2115 pass over the groundstation and heard
the spacecraft boot during the pass when she got out of eclipse. Actually,
PA3WEG and I are sitting at home controlling the GS via VNC/Skype... worked
fine:) Strong sigs again.
We can confirm the earlier reports by G0MRF and G8ATE of the sudden dropout
of the TX at 145.930. We have observed this on previous passes, usually, the
TX comes up on again after a few secs but not so this time. But the "free
reset" we got when getting out of the eclipse that followed got it running
ok again.
We are receiving quite some telemetry on our server, thanks a lot to all of
you listening!!!
Time to go to bed now:), more updates tomorrow.
73
Wouter Jan Ubbels PE4WJ
------------------------------
Message: 12
Date: Mon, 28 Apr 2008 23:32:51 +0200 (CEST)
From: "Rob Hardenberg PE1ITR" <rob(AT)itr-datanet.com>
Subject: [amsat-bb] DelfiC3 21:15UTC report
To: amsat-bb(AT)amsat.org
Message-ID:
<36197.62.194.94.103.1209418371.squirrel(AT)customer.itr-datanet.com>
Content-Type: text/plain;charset=iso-8859-1
Hi,
Just heard great signals of Delfic3 on 145.930.
Satellite switched 21:15UTC on when it came out of eclipse.
LOS time was 21:24:21UTC
I was tracking Object B.
Also heard strong signals of seeds, but I switched to delfic3 when it switched
on.
73 Rob PE1ITR
http://www.pe1itr.com
------------------------------
Message: 13
Date: Mon, 28 Apr 2008 23:23:14 +0930
From: "Colin Hurst" <cjhurst(AT)bigpond.net.au>
Subject: [amsat-bb] Correction: New Satellite Observations.
To: <amsat-bb(AT)amsat.org>
Message-ID: <INEGKIBIIECPIBBDGHLEAELADJAA.cjhurst(AT)bigpond.net.au>
Content-Type: text/plain; charset="us-ascii"
Having listened to a recording of the pass mentioned below, the chirpy
signal is crystal locked, but the doppler shift deviated significantly from
the auto-tuning, which suggests the keps in use need some refinement.
Unfortunately the two signals are only 300 Hz apart.
>From the chirpy signal I was able to decode from the start of a sequence
00C01.A..29000000000000000.502C5...
Apologies about jumping to the conclusion about the crystal.
Colin VK5HI
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org]On
Behalf Of Colin Hurst
Sent: Monday, 28 April 2008 10:41 PM
To: amsat-bb(AT)amsat.org
Subject: [amsat-bb] New Satellite Observations.
Observations from the pass 1242 UTC to 1255 UTC, over VK.
Copied two CW signals on nominal 437.275.
One was very unstable and chirpy with slow CW, the other was clean, fast
CW, but quite weak in signal strength. The unstable signal drifted down the
band very quickly, definitely not crystal locked.
Also copied SEEDS on nominal 437.485, but may be slightly lower in
frequency.
Signal clean but very weak. Visible on Spectran but not decode-able.
This pass was in Eclipse.
Used auto-tracking throughout the pass, which may have been a retrograde
move.
Colin VK5HI.
_______________________________________________
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: 14
Date: Tue, 29 Apr 2008 00:08:29 +0200
From: Jens Kirsten <jens_kirsten(AT)yahoo.de>
Subject: [amsat-bb] Delfi C-3 tracking an keplerian elements
To: amsat-bb(AT)amsat.org
Message-ID: <48164ADD.9050607(AT)yahoo.de>
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
Hi Dave,
for satellite tracking I use "orbitron". It's easy to use and freeware.
You can find it here: http://www.stoff.pl/
The Keplerian elements needed for tracking can be found on the Delfi C-3
web page:
http://www.delfic3.nl/index.php?option=com_content&task=view&id=93&Itemid=122
Simply copy and paste the 2-line format in a txt-file and save this file
as *.txt. This txt-file can then be loaded into the satellite tracking
program, for example "orbitron".
Don't worry about Az/El rotor. I could receive almost every cubesat on
VHF with my general groundplane antenna. Even with my HT TH-F7E
reception in the field is possible.
You can also download the RASCAL telemetry decoding software from the
Delfi C-3 page. See here:
http://www.delfic3.nl/index.php?option=com_content&task=view&id=94&Itemid=123
Best 73! from JO40ja
Jens - DL2FJK
D. Mynatt wrote:
> Group,
>
> I'm new to this and a local ham has agreed to help me build a 'J'-type
> antenna matched to 145.930Mhz to track Delfi. I won't have a Az/El
> rotor setup, but my apt is the highest in the city (ain't saying much
> about CO, huh?) and I'm hoping that's enough as the antenna is good on
> the sides but not on the overhead, as I understand him to say.
>
> Any way, so I don't appear toooooo stupid can you tell me what
> application I'd use to know where this bird is at, when. How does the
> Keps for Delfi get into the app. Is everyone using SatPC ?
>
> Thanks for taking time outta this exciting moment,
>
> Dave (KA0SWT)
>
>
------------------------------
Message: 15
Date: Mon, 28 Apr 2008 22:18:40 -0000
From: "Alan Cresswell" <alancresswell(AT)xtra.co.nz>
Subject: [amsat-bb] Delphi-C3 pass 2200 over ZL
To: <amsat-bb(AT)amsat.org>
Message-ID: <000201c8a97d$d096f7a0$0301010a(AT)Cresswell2>
Content-Type: text/plain; charset="us-ascii"
Again nothing heard on 2200ut 31deg pass over ZL. Last pass for today.
Good CW signal from SEEDS on 437.485
Alan
ZL2BX
------------------------------
Message: 16
Date: Mon, 28 Apr 2008 20:17:54 -0300
From: "Bruce Robertson" <ve9qrp(AT)gmail.com>
Subject: [amsat-bb] Re: Delfi C-3 tracking an keplerian elements
To: "Jens Kirsten" <jens_kirsten(AT)yahoo.de>
Cc: amsat-bb(AT)amsat.org
Message-ID:
<49657a760804281617o3a317b57ma1a745e2e119542a(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
On Mon, Apr 28, 2008 at 7:08 PM, Jens Kirsten <jens_kirsten(AT)yahoo.de>
wrote:
> Hi Dave,
>
> for satellite tracking I use "orbitron". It's easy to use and freeware.
> You can find it here: http://www.stoff.pl/
> The Keplerian elements needed for tracking can be found on the Delfi C-3
> web page:
>
http://www.delfic3.nl/index.php?option=com_content&task=view&id=93&Itemid=122
>
> Simply copy and paste the 2-line format in a txt-file and save this file
> as *.txt. This txt-file can then be loaded into the satellite tracking
> program, for example "orbitron".
>
> Don't worry about Az/El rotor. I could receive almost every cubesat on
> VHF with my general groundplane antenna. Even with my HT TH-F7E
> reception in the field is possible.
>
> You can also download the RASCAL telemetry decoding software from the
> Delfi C-3 page. See here:
>
http://www.delfic3.nl/index.php?option=com_content&task=view&id=94&Itemid=123
>
>
> Best 73! from JO40ja
> Jens - DL2FJK
>
>
I would add to Jen's helpful comments that your antenna choice
decisions are somewhat different when dealing with satellites. A
high-gain omni antenna for terrestrial use gets its gain by keeping
the radiation angle low. For a satellite, though, that means that you
will receive poorly above, say, 15 degrees, and that might be the part
of the pass where your omni antenna would otherwise have a fighting
chance.
All to say that a crummy 1/4 wave groundplane might work better than
the jpole, especially if you can tilt the vertical element over a bit
to reduce the null overhead.
This is truly an experimental branch of the hobby: each bird has its
different characteristics, and antenna design is great fun. Have as
many different options at hand as you can and see what works best for
you.
73, Bruce
VE9QRP
> D. Mynatt wrote:
> > Group,
> >
> > I'm new to this and a local ham has agreed to help me build a 'J'-type
> > antenna matched to 145.930Mhz to track Delfi. I won't have a Az/El
> > rotor setup, but my apt is the highest in the city (ain't saying much
> > about CO, huh?) and I'm hoping that's enough as the antenna is good on
> > the sides but not on the overhead, as I understand him to say.
> >
> > Any way, so I don't appear toooooo stupid can you tell me what
> > application I'd use to know where this bird is at, when. How does the
> > Keps for Delfi get into the app. Is everyone using SatPC ?
> >
> > Thanks for taking time outta this exciting moment,
> >
> > Dave (KA0SWT)
> >
> >
>
> _______________________________________________
> 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: 17
Date: Tue, 29 Apr 2008 09:28:23 +0930
From: David <vk5dg(AT)aapt.net.au>
Subject: [amsat-bb] Delfi-C3 not heard, SEEDS and CUTE heard
To: amsat-bb(AT)amsat.org
Message-ID: <200804290928.23616.vk5dg(AT)aapt.net.au>
Content-Type: text/plain; charset="us-ascii"
Hello All,
Didn't hear Delfi-c3 over VK (Grid QF02) at 2340 UTC. Heard SEEDS and a frame
from CUTE-1.7+APD II before it went LOS.
Using 'old' keps from Delfi website.
73 de David VK5DG
------------------------------
Message: 18
Date: Mon, 28 Apr 2008 20:03:02 -0400
From: "Stargate" <stargatesg1(AT)verizon.net>
Subject: [amsat-bb] Delfi question
To: "Amsat-Bb" <amsat-bb(AT)amsat.org>
Message-ID: <HLENIILIDNGDDDJIDEMFIEMBFMAA.stargatesg1(AT)verizon.net>
Content-Type: text/plain; charset=iso-8859-1
Hi all,
I use Orbitron for satellite tracking and get my TLE/KEPS from CelesTrak
and/or Space-Track.
Whenever there is a new launch, I can never figure out which satellites are
"NEW" from the names
given on my list of satellites.
Does Celestrak/Spacetrak update their data as soon as the bird is
launched
our should
I do it manually?
Orbitron has a TLE-NEW.txt file that usually shows the space shuttle
launches
in a format that I know. (example...STS-123)
I hope this makes sense to someone. I'm not sure if I have made myself
clear. hihi
TIA
RoD
KD0XX
------------------------------
_______________________________________________
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
End of AMSAT-BB Digest, Vol 3, Issue 206
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