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CX2SA > SATDIG 29.04.08 23:18l 752 Lines 24433 Bytes #999 (0) @ WW
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Today's Topics:
1. Re: Determining when Delfi-C3 is out of eclipse? (Edward Cole)
2. Re: ao27.org possible schedule error?
(Patrick STODDARD (WD9EWK/VA7EWK))
3. AMSAT goes to the races -- photos (Tom Clark, K3IO)
4. Re: Determining when Delfi-C3 is out of eclipse? (Rick Mann)
5. Re: CubeSats TLE object ?! (Chris Bloy)
6. Re: Delfi question (G8IFF/W8IFF)
7. Delfi-C3 pass #18 (Jari Koivurinne)
8. Delfi-C3 HEARD over the Delfi-C3 groundstation 08:53 UTC pass
- s/c in EMERGENCY mode (Wouter Jan Ubbels)
9. Re: Delfi-C3 (Geoff)
10. Delfi-C3 HEARD again in SCIENCE mode over the Delfi-C3
groundstation 10:30 UTC (Wouter Jan Ubbels)
11. RF connectors in 736R (n1jez(AT)burlingtontelecom.net)
12. CUTE-1.7 AFSK received (Mineo Wakita)
13. Re: RF connectors in 736R (i8cvs)
14. Re: Delfi_C3 life (Luc Leblanc)
15. Re: Delfi-C3 (Delfi-C3 Mission Control)
16. DELFI C 3 no TX on first ENA pass (Luc Leblanc)
17. Re: DELFI C 3 no TX on first ENA pass (Alan P. Biddle)
----------------------------------------------------------------------
Message: 1
Date: Mon, 28 Apr 2008 21:11:02 -0800
From: Edward Cole <kl7uw(AT)acsalaska.net>
Subject: [amsat-bb] Re: Determining when Delfi-C3 is out of eclipse?
To: "'AMSAT-BB Org'" <amsat-bb(AT)amsat.org>
Message-ID: <200804290511.m3T5B3qx064526(AT)malik.acsalaska.net>
Content-Type: text/plain; charset="us-ascii"; format=flowed
According to NOVA Delfi-Ce emerges from eclipse at approx. 0523utc, today.
It is still daylight here at 0506 and sun will set at 0552. We have
15h 39m daylight at this time of year (sunrise is 1413utc/ 6:13am local).
73 Ed - KL7UW
At 05:46 PM 4/28/2008, Rick Mann wrote:
>On Apr 28, 2008, at 18:42:56, Alan wrote:
>
> > In SATPC32 - use the "S" option to turn the "Sun Line ON/OFF" and
> > status of
> > satellite will show "SAT in SUN" or "SAT in ECLIPSE" beside your QTH
> > co-ordinates in top left corner.
>
>Ah, I'm on a Mac...
>
> > Thus, the satellite may be over the dark side of the earth while its
> > elevation will put it up into the sun.
> >
> > Very handy for AO-7 too.
> >
> > Can't give you specific info as you didn't tell us your QTH. Need
> > more than
> > just the 4 character grid square.
>
>
>My QTH shouldn't be necessary to tell if the satellite is in or out of
>eclipse at a given time, right? I just need to know if it's out of
>eclipse in the 10 - 15 minutes after each of these times (tonight):
>
>0342 UTC
>0516 UTC
>
>Unless I'm completely forgetting something...
>
>
>--
>Rick
>
>_______________________________________________
>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: 2
Date: Mon, 28 Apr 2008 22:58:34 -0700
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb(AT)wd9ewk.net>
Subject: [amsat-bb] Re: ao27.org possible schedule error?
To: amsat-bb(AT)amsat.org
Message-ID:
<2e18ad3e0804282258j222ca970r4e970afe7eb6ba45(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Hi Sam!
> From what I see, the schedule on ao27.org seems to be 8-10 mins off
> from actual time. The bird doesn't seem to have changed schedule at all.
> Can anyone else confirm this?
Your observation appears to be correct. I have seen this about a month or
so after the satellite gets a new schedule uploaded to it. It appears to be
a glitch on the web site. AO-27 should be turning on during afternoon
passes when it crosses approximately 29 degrees North latitude.
Do you have the AO-27 Satellite Scheduler program available from:
http://www.cs.rit.edu/~cjh9783/programs/satsched.php
It requires the Java Runtime Environment on your computer, and there are
versions that will run on any OS with Java or one specifically for Windows
(still needs Java installed). This will get you closer to the schedule on the
satellite, keeping in mind the statement on http://www.ao27.org/ that the
onboard clock is fast by 0.7 seconds/day from when the last schedule
was put into effect (currently, from 8 March 2008).
Comparing the program with the web site, it appears there is a discrepancy
of around 7 minutes (not accounting for onboard clock issues). If you can
get the program to determine the onboard schedule instead of using the
web site, that would probably be a good thing. Or use your program to
determine approximately when AO-27 crosses 29 degrees North, to get an
approximate idea when the satellite's repeater should be available.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 3
Date: Tue, 29 Apr 2008 03:18:35 -0400
From: "Tom Clark, K3IO" <k3io(AT)verizon.net>
Subject: [amsat-bb] AMSAT goes to the races -- photos
To: AMSAT BB <amsat-bb(AT)amsat.org>, AMSAT BoD <bod(AT)amsat.org>,
senior-officers <Senior-officers(AT)amsat.org>, Jim Jaeger
<jjaeger(AT)cinci.rr.com>
Message-ID: <4816CBCB.5040904(AT)verizon.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
This past weekend, W2GPS, WA4SXM and I attended the premier of AMSAT.ORG
in Grand-Am Racing at the Virginia International Raceway (VIR). As
reported earlier, Jim Jaeger (K8RQ) arranged for the AMSAT logo to
appear prominently on the yellow Doran Racing Kodak #77 Dallara/Ford car
driven by Brad Jaeger (Jim's son) and Memo Gidley. The Doran Racing web
site has a gallery of photos featuring their #77 Kodak & #47 BSi cars
available for viewing at http://www.doranracing.com/08_vir/photo.htm.
The VIR race can be seen this coming Saturday on the cable SPEED CHANNEL
from noon to 3PM EDT (16:00-19:00 UTC).
AMSAT's logo will again be flying this coming weekend at the Laguna Seca
track in California (see
http://www.grand-am.com/rolex/schedule/event.cfm?eid=10).
Rick and I have HUNDREDS of additional photos of the AMSAT car in action
which we will post soon for your enjoyment. You will be able to see (a
large photo of) the car in the AMSAT booth at Dayton.
73, Tom
------------------------------
Message: 4
Date: Tue, 29 Apr 2008 00:19:20 -0700
From: Rick Mann <rmann(AT)latencyzero.com>
Subject: [amsat-bb] Re: Determining when Delfi-C3 is out of eclipse?
To: Alan <ve4yz(AT)mts.net>
Cc: 'AMSAT-BB Org' <amsat-bb(AT)amsat.org>
Message-ID: <5816B5C5-1481-4DC4-9C8A-4D37155D247D(AT)latencyzero.com>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
On Apr 28, 2008, at 19:51:57, Alan wrote:
> 3:44 UTC enters Sun
> 5:22 UTC enters Sun
Thanks, Alan! I was able to get strong signal on both passes. I'm
fairly sure that Delfi-C3 started transmitting at 05:20:48 UTC (+/- a
couple seconds).
--
Rick
------------------------------
Message: 5
Date: Tue, 29 Apr 2008 10:04:24 +0100
From: "Chris Bloy" <chris(AT)photofuture.co.uk>
Subject: [amsat-bb] Re: CubeSats TLE object ?!
To: amsat-bb(AT)amsat.org
Message-ID: <WorldClient-F200804291004.AA04240007(AT)photofuture.co.uk>
Content-Type: text/plain; charset=us-ascii
Hi All,
Will these start to move away from each other in the next few weeks?
I am guess yes, but they really are allon top of each other...
Thanks,
Chris - M0DQO
-----Original Message-----
From: Mineo Wakita <ei7m-wkt(AT)asahi-net.or.jp>
To: amsat-bb(AT)amsat.org
Date: Tue, 29 Apr 2008 14:41:53 +0900
Subject: [amsat-bb] CubeSats TLE object ?!
I'm forecasting now TLE object as follows,
because of the separated sequence.
28Apr2008 UTC
PSLV-C9 03:53:51 Launched
OBJECT A = CANTROSAT-2A 04:08:36 Separated
OBJECT B = IMS-1 04:09:21 Separated
OBJECT C = CUTE-1.7+APDII 04:11:03 Separated
OBJECT D = CANX-2 04:11:23 Separated
OBJECT E = DELFI-C3 04:11:43 Separated
OBJECT F = AAUSAT-II 04:12:03 Separated
OBJECT G = SEEDS 04:12:23 Separated
OBJECT H = COMPASS-1 04:12:43 Separated
OBJECT J = CANX-6 04:13:04 Separated
OBJECT A
1 32783U 08021A 08119.88027102 .00000646 00000-0 10000-3 0 105
2 32783 097.9238 179.7711 0029795 228.8808 130.9863 14.76319584 103
OBJECT B
1 32784U 08021B 08119.94564281 .00069490 00000-0 88843-2 0 96
2 32784 097.9993 179.9780 0014395 290.8942 069.0752 14.80954700 118
OBJECT C
1 32785U 08021C 08119.87823559 .00000714 00000-0 10000-3 0 113
2 32785 098.0018 179.9127 0013160 284.9772 074.9985 14.80602469 102
OBJECT D
1 32786U 08021D 08119.87805543 .00000721 00000-0 10000-3 0 115
2 32786 097.9993 179.9103 0012861 292.3044 067.6803 14.80984919 100
OBJECT E
1 32787U 08021E 08120.01294647 .00000729 00000-0 10000-3 0 85
2 32787 097.9952 180.0399 0013948 297.7423 062.2303 14.81397180 120
OBJECT F
1 32788U 08021F 08119.94534902 .00000731 00000-0 10000-3 0 80
2 32788 097.9969 179.9695 0014256 302.4237 057.5509 14.81501743 111
OBJECT G
1 32789U 08021G 08119.94541883 .00068724 00000-0 86975-2 0 109
2 32789 097.9925 179.9678 0013523 294.4274 065.5528 14.81394650 119
OBJECT H
1 32790U 08021H 08119.94537520 .00000732 00000-0 10000-3 0 38
2 32790 098.0048 179.9689 0012489 327.6008 032.4084 14.81590405 98
OBJECT J
1 32791U 08021J 08119.74282862 .00000726 00000-0 10000-3 0 14
2 32791 097.9961 179.7775 0014804 307.9492 052.0379 14.81249662 53
_______________________________________________
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: 6
Date: Tue, 29 Apr 2008 09:15:19 +0000
From: G8IFF/W8IFF <nigel(AT)ngunn.net>
Subject: [amsat-bb] Re: Delfi question
To: stargatesg1(AT)verizon.net
Cc: Amsat-Bb <amsat-bb(AT)amsat.org>
Message-ID: <4816E727.3090809(AT)ngunn.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
SpaceTrack updates (I believe) twice a day with anything they can see on
the radar but it can then take several days to correctly identify and
label the object.
Stargate wrote:
> 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-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
>
>
--
<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Nigel A. Gunn. 59 Beadlemead, Milton Keynes, MK6 4HF, England.
Tel +44 (0)1908 604004 mobile +44 (0)7951079089
e-mail nigel(AT)ngunn.net www http://www.ngunn.net
Amateur radio stations G8IFF, W8IFF (was KC8NHF)
Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pig #385,
Dayton ARA #2128, AMSAT-NA LM-1691, MKARS, RAYNET
<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
------------------------------
Message: 7
Date: Tue, 29 Apr 2008 09:09:32 -0000
From: "Jari Koivurinne" <jari.koivurinne(AT)aina.net>
Subject: [amsat-bb] Delfi-C3 pass #18
To: <amsat-bb(AT)amsat.org>
Message-ID: <ELENKCKBGJGJDOPPNPOGIEBKDDAA.jari.koivurinne(AT)aina.net>
Content-Type: text/plain; charset="us-ascii"
Hello!
Perfect overhead pass #18 but no telemetry this time. Only some
sort of carrier. Was the Delfi-C3 data stuck or something?
I think there was some cyclical "data" modulation or interference on
that carrier but all too weak to even identify.
-jari oh3uw
------------------------------
Message: 8
Date: Tue, 29 Apr 2008 11:21:38 +0200
From: "Wouter Jan Ubbels" <wjubbels(AT)gmail.com>
Subject: [amsat-bb] Delfi-C3 HEARD over the Delfi-C3 groundstation
08:53 UTC pass - s/c in EMERGENCY mode
To: amsat-bb(AT)amsat.org, missioncontrol(AT)delfic3.nl
Message-ID:
<af4c9b1b0804290221w84c9f5cwb37e989b543e764(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Hi all,
we just heard Delfi-C3 again over the Delfi-C3 groundstation on the 08:53
pass. Signal was strong, NORAD Object #32786 seemed to fit best, but we are
not 100% sure.
Judging from the downlink, the spacecraft is in emergency mode.
TLE's for object #32786:
1 32786U 08021D 08119.87805543 .00000721 00000-0 10000-3 0 115
2 32786 097.9993 179.9103 0012861 292.3044 067.6803 14.80984919 100
Frequency: 145.930MHz
Downlink signal in emergency mode are 2 tones, of 500Hz and 900Hz each,
modulated DSB onto the (suppressed) carrier, use USB to receive this signal.
These tones themselves are modulated with 100Bd FSK each with raw payload
data. If you hear this signal, please record a wav file if possible.
If you hear Delfi-C3 please send your reports to
missioncontrol(AT)delfic3.nl
stating AOS, LOS, frequency, signal strength
If possible, please record and attach a WAV file
Thanks!
Wouter Jan Ubbels PE4WJ
------------------------------
Message: 9
Date: Tue, 29 Apr 2008 20:21:40 +1000
From: Geoff <vk2tfg(AT)ozemail.com.au>
Subject: [amsat-bb] Re: Delfi-C3
To: amsat-bb(AT)amsat.org, missioncontrol(AT)delfic3.nl
Message-ID: <200804292021.41720.vk2tfg(AT)ozemail.com.au>
Content-Type: text/plain; charset="iso-8859-1"
On Tuesday 29 April 2008 14:23, Alan Cresswell wrote:
> It seems that most reports of good Delfi reception relate to northbound
> passes. So far it appears that Delfi has not been heard in VK/ZL during a
> number of Southbound sunlit passes despite a number of stations listening
> and good reception of SEEDS and Cute1.7. Could this be a spacecraft
> orientation issue or has Delfi just a bit anti Southern hemisphere?
>
snipped
It is possible that Alan is right? I have listened to two good sun-lit passes
without hearing a thing from DelfiC3. I wonder what the telemetry is saying
about orientation and power system performance? I like it when a new bird
presents us with a puzzle :-)
73 de Geoff vk2tfg.
------------------------------
Message: 10
Date: Tue, 29 Apr 2008 12:55:14 +0200
From: "Wouter Jan Ubbels" <wjubbels(AT)gmail.com>
Subject: [amsat-bb] Delfi-C3 HEARD again in SCIENCE mode over the
Delfi-C3 groundstation 10:30 UTC
To: amsat-bb(AT)amsat.org
Message-ID:
<af4c9b1b0804290355y68244079w10d5ae2c4371392f(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
All,
Delfi-C3 was heard again with solid signals in SCIENCE mode on 145.930MHz
BPSK :) over the TU Delft Groundstation. Everything looked nominal again. We
seem to have had an issue with our databus, but the next eclipse solved it.
Furthermore, we verified the command uplink functionality and were able to
talk to the satellite, we even got an on-board database dump upon command.
Awesome.
pfewwww.... interesting days these indeed
Thanks all for listening and submitting telemetry!!!
Wouter Jan Ubbels PE4WJ
------------------------------
Message: 11
Date: Tue, 29 Apr 2008 07:20:43 -0400
From: <n1jez(AT)burlingtontelecom.net>
Subject: [amsat-bb] RF connectors in 736R
To: "AMSAT BB" <amsat-bb(AT)amsat.org>, "VHF" <vhf(AT)w6yx.stanford.edu>
Message-ID: <000b01c8a9eb$11a8e830$6901a8c0(AT)Mike2>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Howdy,
A while ago I seem to remember a discussion on availability of the small
push on RF connectors used inside the FT-736R to interconnect boards. These
same connectors are used in quite a few radios. They were a crimp on style.
Anyone remember the source?
Tnx
73,
Mike N1JEZ
AMSAT #29649
"A closed mouth gathers no feet"
------------------------------
Message: 12
Date: Tue, 29 Apr 2008 21:27:15 +0900
From: Mineo Wakita <ei7m-wkt(AT)asahi-net.or.jp>
Subject: [amsat-bb] CUTE-1.7 AFSK received
To: amsat-bb(AT)amsat.org
Message-ID: <2CC8A9F45B85AEei7m-wkt(AT)asahi-net.or.jp>
Content-Type: text/plain; charset=us-ascii
437.475MHz, 1200bd AFSK
Using OBJECT C:
Over Japan only?
JQ1YTC>JQ1YCZ [04/29/08 11:47:00z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:47:03z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:47:06z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:47:09z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:47:12z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:47:15z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:47:18z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:47:21z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:47:24z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:47:39z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:47:42z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:47:45z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:47:48z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:47:51z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:48:00z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:48:03z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:48:12z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:48:15z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:48:18z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:48:21z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:48:33z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:49:00z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:49:21z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:49:24z] <UI C>:.....
JQ1YTC>JQ1YCZ [04/29/08 11:49:30z] <UI C>:.....
---------------------------------------------
Name: Mineo Wakita / JE9PEL, JAMSAT member
Mail: ei7m-wkt(AT)asahi-net.or.jp
URL : http://www.ne.jp/asahi/hamradio/je9pel/
QTH : Yokohama Japan, GL:pm95tj
Date: Apr 29, 2008
---------------------------------------------
------------------------------
Message: 13
Date: Tue, 29 Apr 2008 16:31:22 +0200
From: "i8cvs" <domenico.i8cvs(AT)tin.it>
Subject: [amsat-bb] Re: RF connectors in 736R
To: <n1jez(AT)burlingtontelecom.net>, "AMSAT BB" <amsat-bb(AT)amsat.org>,
"VHF" <vhf(AT)w6yx.stanford.edu>
Message-ID: <000e01c8aa05$b3766ba0$0201a8c0(AT)tin.it>
Content-Type: text/plain; charset="iso-8859-1"
Hi Mike, N1JEZ
I don't have a FT-736R but if the small push on RF connector plug is female
and the jack is a male they probably are SMB connectors normally used also
by HP to interconnect the modules inside the instruments.
Look here to see in the catalog pag H-17 if they really match the type you
need.
http://www.rfmicrowave.it/pdf/connettori.pdf
If so you can find the SMB connectors with easy in USA
I remember many interesting contacts with you on AO40 mode L/S
and the AO40 S1/K test early 02/23/2003............when the new P3-E ?
73" de
i8CVS Domenico
----- Original Message -----
From: <n1jez(AT)burlingtontelecom.net>
To: "AMSAT BB" <amsat-bb(AT)amsat.org>; "VHF" <vhf(AT)w6yx.stanford.edu>
Sent: Tuesday, April 29, 2008 1:20 PM
Subject: [amsat-bb] RF connectors in 736R
> Howdy,
>
> A while ago I seem to remember a discussion on availability of the small
> push on RF connectors used inside the FT-736R to interconnect boards.
These
> same connectors are used in quite a few radios. They were a crimp on
style.
>
> Anyone remember the source?
>
> Tnx
>
> 73,
> Mike N1JEZ
> AMSAT #29649
> "A closed mouth gathers no feet"
>
> _______________________________________________
> 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 04:30:28 -0400
From: Luc Leblanc <lucleblanc6(AT)videotron.ca>
Subject: [amsat-bb] Re: Delfi_C3 life
To: eu-amsat(AT)yahoogroups.com
Cc: amsat-bb(AT)AMSAT.Org
Message-ID: <4816A464.4949.1ED966(AT)lucleblanc6.videotron.ca>
Content-Type: text/plain; charset=US-ASCII
Hi
In a chat session yesterday about DELFI C 3 with Jean-Pierre VE2AHD we are
questioning ourselves about the mission length. As per the
mission web site (see below) even if the satellite should stay in space for
"several decade" the mission lifetime is planned for +- 1 year.
As no batteries are in the satellite what will prevent the mission to go where
no man has gone before... oups! to go well over the expected
one year period? Components failure? this will most likely be the main reason
for a limited time frame life expectation?
As a cute girl cannot give what she don't have i think there is nothing who
will prevent DELFI C3 to live for several years aside of a
component failure or a shut down command given from earth. She seems to be
made strong but it is an external evaluation...
>
> How long will the Delfi-C3 be in orbit?
> The drawback of the altitude at which the satellite will fly is the decay of
the orbit. Due to atmospheric drag the satellite will lose energy, and thus
altitude.
> For Delfi-C3 this means that it will stay in orbit for several decades. The
Delfi-C3 mission has been developed around a mission lifetime of one year.
>
Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
WAC BASIC CW PHONE SATELLITE
------------------------------
Message: 15
Date: Tue, 29 Apr 2008 12:29:03 +0200
From: Delfi-C3 Mission Control <missioncontrol(AT)delfic3.nl>
Subject: [amsat-bb] Re: Delfi-C3
To: Geoff <vk2tfg(AT)ozemail.com.au>
Cc: amsat-bb(AT)amsat.org
Message-ID: <4816F86F.90700(AT)delfic3.nl>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Geoff wrote:
> On Tuesday 29 April 2008 14:23, Alan Cresswell wrote:
>
>> It seems that most reports of good Delfi reception relate to northbound
>> passes. So far it appears that Delfi has not been heard in VK/ZL during a
>> number of Southbound sunlit passes despite a number of stations listening
>> and good reception of SEEDS and Cute1.7. Could this be a spacecraft
>> orientation issue or has Delfi just a bit anti Southern hemisphere?
>>
>>
> snipped
>
> It is possible that Alan is right? I have listened to two good sun-lit
passes
> without hearing a thing from DelfiC3. I wonder what the telemetry is saying
> about orientation and power system performance? I like it when a new bird
> presents us with a puzzle :-)
>
> 73 de Geoff vk2tfg.
>
Hi Geoff,
Next pass if you don't hear anything on 145.87 or `45.93 try to listen
to delfi's emergency signal.
Downlink signal in emergency mode are 2 tones, of 500Hz and 900Hz each,
modulated DSB onto the (suppressed) carrier, use USB to receive this signal.
These tones themselves are modulated with 100Bd FSK each with raw
payload data. If you hear this signal, please record a wav file if possible.
Thanks,
Bram
Delfi-C3 Mission Control
------------------------------
Message: 16
Date: Tue, 29 Apr 2008 10:29:26 -0400
From: Luc Leblanc <lucleblanc6(AT)videotron.ca>
Subject: [amsat-bb] DELFI C 3 no TX on first ENA pass
To: amsat-bb(AT)AMSAT.Org
Cc: eu-amsat(AT)yahoogroups.com
Message-ID: <4816F886.8856.1678153(AT)lucleblanc6.videotron.ca>
Content-Type: text/plain; charset=US-ASCII
On the 1347Z pass over eastern NA no data has been received a faint carrier
but not too sure if it was coming from DELFI C 3
Luc Leblanc VE2DWE
Skype VE2DWE
www.qsl.net/ve2dwe
WAC BASIC CW PHONE SATELLITE
------------------------------
Message: 17
Date: Tue, 29 Apr 2008 11:02:16 -0500
From: "Alan P. Biddle" <APBIDDLE(AT)UNITED.NET>
Subject: [amsat-bb] Re: DELFI C 3 no TX on first ENA pass
To: <amsat-bb(AT)amsat.org>
Message-ID: <000001c8aa12$65ad7960$6501a8c0(AT)WA4SCA>
Content-Type: text/plain; charset="us-ascii"
During the 1525 UTC NA pass today, heard nothing on either frequency, except
one very brief, 2-3 second burst of what was clearly BPSK on 145.930.MHz. I
was tuning, and it caught me by surprise, so I was not able to capture it. I
did not have time to look at the S-meter, but it sounded loud, well above
the noise level.
Alan
WA4SCA
------------------------------
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