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CX2SA > SATDIG 19.08.08 02:40l 1115 Lines 29679 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. more poking around SSB satellites (16 August)
(Patrick STODDARD (WD9EWK/VA7EWK))
2. Re: WG: Compass-1 recovery efforts (Alan Cresswell)
3. Re Compass-1 recovery efforts (Alan Cresswell)
4. Re: Re Compass-1 recovery efforts (Henk, PA3GUO)
5. Re: COMPASS-1 needs your help (Greg D.)
6. Re: Re Compass-1 recovery efforts (Alan Cresswell)
7. Re: Re Compass-1 recovery efforts (Alan Cresswell)
8. COMPASS-1 Recovery + Cute1.7+APDII & SEEDS Report
(9w2qc(AT)9w2qc.net)
9. COMPASS recovery efforts :-) (Mike Rupprecht)
10. COMPASS-1 beacon (Mike Rupprecht)
11. Re: COMPASS recovery efforts :-) (Alan Cresswell)
12. Re: COMPASS recovery efforts :-) (Alan Cresswell)
13. Re: DIY: Parabolic mirror (Joe)
----------------------------------------------------------------------
Message: 1
Date: Sun, 17 Aug 2008 12:14:38 -0700 (PDT)
From: "Patrick STODDARD \(WD9EWK/VA7EWK\)" <amsat-bb(AT)wd9ewk.net>
Subject: [amsat-bb] more poking around SSB satellites (16 August)
To: amsat-bb(AT)amsat.org
Message-ID: <625010.10726.qm(AT)web56102.mail.re3.yahoo.com>
Content-Type: text/plain; charset=us-ascii
Hi!
Yesterday, I took my portable SSB satellite station (2 FT-817NDs
with Arrow Antennas dual-band Yagi) to a park here in Phoenix on
the DM33xp/DM43ap grid boundary:
http://maps.google.com/maps?f=q&hl=en&geocode=&q=33+38.933+N+112+0.00+w&ie=UTF
8&ll=33.811102,-112.000122&spn=2.040058,3.872681&t=h&z=8&iwloc=addr&om=0
For the time being, I consider this location my "home QTH" when
working satellites. A nice open area, plus being right on 112
degrees West doesn't hurt. I did not wake up early enough to try
AO-7 during the morning passes, but I planned to try DO-64 (Delfi-C3)
and VO-52 again in the late morning. Later in the day, I tried an
AO-7 pass to the east. Mixed results, and a good day - other than
the 104F/40C heat and humidity.
I first tried a high DO-64 pass at 1727-1741 UTC yesterday morning.
About 3 minutes into the pass, I could clearly hear the CW beacon.
I did not try to copy the telemetry, but did hear "DELFI" coming
through - confirming I was listening to this satellite. No S-meter
movement on my receiver, noticeably weaker than VO-52, but workable.
I then tried to hear myself through the transponder. Success!
Again, signals through this satellite are weaker than VO-52, but
for my portable setup I do not need a preamp to hear anything. I
heard one other station, a W6, and then I proceeded to pick a spot
to camp out and call CQ.
I set up so I would be on/around 145.910 MHz USB on the downlink.
It did not take long to hear myself transmitting through the
satellite. I called CQ, and - unfortunately - only heard myself
for the remainder of the pass. A suggestion... since AMSAT is
now distributing keps for this satellite in the weekly keps
e-mails, why not put this satellite on the web site's pass-
prediction utility? I will definitely try for this satellite
again, hoping to make some contacts through it.
A few minutes later, VO-52 was coming by. Again, a high pass,
at 1750-1803 UTC, and I went to work. Calling CQ so I could hear
myself around 145.910 MHz USB on the downlink, Ken N6KTH responded
a couple of minutes into the pass. We had a nice chat, longer than
possible on most FM satellite passes. Ken - sorry if I was drifting
around a bit; I was trying to hold my downlink steady and make any
tweaks on my transmit frequency. After working Ken, I moved up to
145.915 MHz and called CQ for the remainder of the pass. Glenn AA5PK
found me in the last couple of minutes of the pass. We had a quick
chat - the satellite was almost out of range for him, and I had about
2 minutes left before I was out of range.
In the late afternoon, I returned to the same location to try for AO-7
on a 20-degree eastern pass at 0042-0100 UTC. I forgot that, with my
portable setup, I need to look for AO-7 passes with high maximum
elevation to hear it with my setup. Last month, I was able to hear
AO-7 passes with elevation above 40 degrees. I know that a preamp
might help me in this area, but I'd rather take the time (and expense)
to have computer control of at least my radios before looking for a
preamp. I will try AO-7 again, another time.
Some details on my FT-817NDs... both have the TCXO module, both
also have the 500Hz CW filter (I also have an SSB filter at home,
but with only one filter slot it's more important to me to have
that CW filter in place), and I usually transmit at 5W. I bought
my first FT-817ND in May 2004, and the second one 3 months ago
when I decided that my AOR AR8200Mk2B receiver didn't tune SSB in
small enough steps for my first attempts with the SSB satellites.
I run both of the radios from a 12V/20Ah gel-cell battery, or I
could use the internal NiMH battery packs in each radio (both at
9.6V, 1400mAh in the older 817 and 2000mAh in the newer 817). I
have been using the newer 817 as my transmit radio.
I'm getting comfortable enough with VO-52 and its powerful downlink,
that I will probably include VO-52 in my hamfest and other satellite
demonstrations I do. DO-64 could also be on that list, once I make
some contacts through it and there are stations on those passes on a
regular basis like VO-52. I might continue my focus on FM satellites
during road trips, but when I'm not on the move I will try to add the
SSB birds to my activities from unusual locations. :-)
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 2
Date: Sun, 17 Aug 2008 19:58:12 -0000
From: "Alan Cresswell" <alancresswell(AT)xtra.co.nz>
Subject: [amsat-bb] Re: WG: Compass-1 recovery efforts
To: "'AMSAT-BB'" <amsat-bb(AT)amsat.org>
Message-ID: <000201c900a3$9510b860$0501010a(AT)Dell1>
Content-Type: text/plain; charset="us-ascii"
Hi Mike,
All commands sent and acknowledged on the 1946 UT, 9 deg pass over ZL this
morning.
Alan
ZL2BX
------------------------------
Message: 3
Date: Sun, 17 Aug 2008 23:16:02 -0000
From: "Alan Cresswell" <alancresswell(AT)xtra.co.nz>
Subject: [amsat-bb] Re Compass-1 recovery efforts
To: <amsat-bb(AT)amsat.org>
Message-ID: <000b01c900bf$38125990$0501010a(AT)Dell1>
Content-Type: text/plain; charset="us-ascii"
Hi Mike,
All commands sent and acknowledged at 2302 UT on Compass 8 deg pass.
Alan
ZL2BX
------------------------------
Message: 4
Date: Mon, 18 Aug 2008 07:00:21 +0200 (CEST)
From: "Henk, PA3GUO" <hamoen(AT)iae.nl>
Subject: [amsat-bb] Re: Re Compass-1 recovery efforts
To: <amsat-bb(AT)amsat.org>
Message-ID: <1311.212.61.85.20.1219035621.squirrel(AT)webmail.iae.nl>
Content-Type: text/plain; charset=iso-8859-1
Hi Alan,
I am glad you can help them. Here, all my efforts resulted in silence.
During the coming days (at least at the times when Compass is in the sun)
it is QRL that keeps me busy. So I won't be of much use ...
Henk, PA3GUO
>Hi Mike,
>All commands sent and acknowledged at 2302 UT on Compass 8 deg pass.
>Alan
>ZL2BX
------------------------------
Message: 5
Date: Sun, 17 Aug 2008 22:11:21 -0700
From: "Greg D." <ko6th_greg(AT)hotmail.com>
Subject: [amsat-bb] Re: COMPASS-1 needs your help
To: Mike Rupprecht <mail(AT)mike-rupprecht.de>, "'AMSAT-BB'"
<amsat-bb(AT)amsat.org>
Message-ID: <BLU133-W438FD127F1B62A6921D69BA96E0(AT)phx.gbl>
Content-Type: text/plain; charset="Windows-1252"
I had a pass about 15 min ago where my satellite program (Predict) showed
COMPASS just coming out of eclipse. I sent the heater sequence (****14#200#;
no # after the *'s) a few times by hand (DTMF keypad) until the calculated
LOS. No beep was heard, but I haven't calibrated my receive side frequency to
this satellite, so I might have missed it.
Is the DTMF timing important?
Greg KO6TH
CM98
----------------------------------------
> From: mail(AT)mike-rupprecht.de
> To: amsat-bb(AT)amsat.org
> Date: Sun, 17 Aug 2008 11:12:19 +0200
> Subject: [amsat-bb] Re: COMPASS-1 needs your help
>
> Hi all,
>
> Now we received 2 successfully contacts with COMPASS from Alan (ZL2BX) and
> Sion (9W2QC).
> On both passes was COMPASS in full sunlight.
>
> The most important commando is ****#14#200# to switch the heater off.
>
> Thank you so much for your effort and time. And please, continue to trying
> and help us to recover COMPASS.
>
> Again, thank you very much for your help.
>
> 73, Mike
> DK3WN
>
>
>
>
> -----Urspr?ngliche Nachricht-----
> Von: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] Im
> Auftrag von Alan Cresswell
> Gesendet: Samstag, 16. August 2008 23:22
> An: 'AMSAT-BB'
> Betreff: [amsat-bb] Re: COMPASS-1 needs your help
>
> Mike,
>
> I have just sent the tone sequences to compass and received a very short
> beep tone immediately after each command on the downlink. The tone has a
> slight change of pitch for its duration. The equipment used was a TS-2000
> with the tones in memory and the tone duration set to "SLOW" (100ms tone,
> 100ms mute).
> Compass pass at 2102 UT and max el 54 deg.
>
> Alan
> ZL2BX
>
>
> -----Original Message-----
> From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org]
On
> Behalf Of Mike Rupprecht
> Sent: Saturday, 16 August 2008 13:55
> To: 'AMSAT-BB'
> Cc: Jakob.Schab(AT)gmx.de; johannes.piepenbrock(AT)gmx.de;
> felix.koenig(AT)alumni.fh-aachen.de; 'Artur Scholz'; kev(AT)kunz.biz
> Subject: [amsat-bb] COMPASS-1 needs your help
>
> Hi all,
>
> The recent events are dramatically. Our two ground stations are almost
> inoperable.
>
> A few days ago however, a hard-reset of the satellite had occurred, which
> brought the satellite back into the following vicious circle: Once the
> heater is being switched on, the battery power drops drastically, which
> causes another hard-reset. This goes on and on. The only chance to recover
> the satellite is to avoid the activation of the heater. This can be done by
> adjusting threshold values.
>
> Since these values are reset after each hard-reset, we would need to send
> them again and again, until the satellite is in a stable condition
> (batteries charging), where no reset occurs.
>
> Thus, if you would like to support this recovery phase and have the right
> equipment to do so, please upload the following DTMF tones to COMPASS-1
> (simply from loudspeaker via microphone)
>
> THRESHOLD ADJUSTMENT (to do after every hard reset)
>
> ****14#200# heater off to -55 degr THIS
> IS THE VERY IMPORTANT COMMAND
>
>
>
> ****13#200# heater on to -55 degr
> ****16#170# critical batt threshold to 3.3V
> ****15#255# low batt threshold to max -> charge batteries
>
> The commands consist of 4 stars, two numbers, a hash, 3 numbers, and a hash.
>
>
> If COMPASS receive this sequence successfully you can hear a short
> confirmation beep.
>
>
>
> There is an good and free DTMF dialer to download here:
>
> http://www.polar-electric.com/DTMF/Index.html#Encoder
>
>
>
> Uplink: 145.980 MHz FM
>
> Downlink: 437.275 MHz CW
>
>
>
> If you have any questions, please ask me. Thank you very much in advance !!!
>
>
> We appreciate your support!! On behalf the COMPASS-team
>
> 73, Mike DK3WN
>
> For more information see : http://www.raumfahrt.fh-aachen.de/news.htm
>
> _______________________________________________
> 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
_________________________________________________________________
Be the filmmaker you always wanted to be?learn how to burn a DVD with
Windows?.
http://clk.atdmt.com/MRT/go/108588797/direct/01/
------------------------------
Message: 6
Date: Mon, 18 Aug 2008 05:51:20 -0000
From: "Alan Cresswell" <alancresswell(AT)xtra.co.nz>
Subject: [amsat-bb] Re: Re Compass-1 recovery efforts
To: <amsat-bb(AT)amsat.org>
Message-ID: <000801c900f6$71282160$0301010a(AT)Cresswell2>
Content-Type: text/plain; charset="us-ascii"
Hi Henk,
Yes it is a bit strange that things seem to work OK on every sunlit pass
down here. Perhaps there is QRM on the uplink in the northern hemisphere.
No such problem down here but the downside of that is that I have no one to
work on most passes Hi. Let's hope the recovery efforts are a success!
Alan
ZL2BX
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] On
Behalf Of Henk, PA3GUO
Sent: Monday, 18 August 2008 05:00
To: amsat-bb(AT)amsat.org
Subject: [amsat-bb] Re: Re Compass-1 recovery efforts
Hi Alan,
I am glad you can help them. Here, all my efforts resulted in silence.
During the coming days (at least at the times when Compass is in the sun)
it is QRL that keeps me busy. So I won't be of much use ...
Henk, PA3GUO
>Hi Mike,
>All commands sent and acknowledged at 2302 UT on Compass 8 deg pass.
>Alan
>ZL2BX
_______________________________________________
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: 7
Date: Mon, 18 Aug 2008 07:58:39 -0000
From: "Alan Cresswell" <alancresswell(AT)xtra.co.nz>
Subject: [amsat-bb] Re: Re Compass-1 recovery efforts
To: <amsat-bb(AT)amsat.org>
Message-ID: <001101c90108$3a8ac970$0301010a(AT)Cresswell2>
Content-Type: text/plain; charset="us-ascii"
Hi Mike,
No problem. I will try the test beacon command on the two good passes
tomorrow. (14 deg and 58 deg.) I assume you still want me to send the other
four commands as well.
I will be away for the third pass tomorrow but it is only 4 deg anyway. I
should be OK for all other passes for the rest of the week.
Alan
ZL2BX
-----Original Message-----
From: Mike Rupprecht [mailto:mail(AT)mike-rupprecht.de]
Sent: Monday, 18 August 2008 05:54
To: Alan Cresswell
Subject: Re: [amsat-bb] Re Compass-1 recovery efforts
Hi Alan,
I can not say enough thank you so much for your time.
It is unclear why we get an confirmation but no beacon is sent.
The confirmation comes from the internal TTC. The beacon is commanded from
EPS to the TTC.
So you could try to request a test beacon. This is the code: ****35##
The beacon text is: 00 dp0com-compass-1-012345-compass-1
This beacon is also controlled by the TTC. It could be that the internal
system bus (I2C) is down and in case we have no internal communcation. Maybe
the low voltage is the reason.
So if you have a good pass (and you have the time) in full sunlight you can
try to get an testbeacon.
Thanks for your great support on behalf of the entire COMPASS team.
73, Mike
----- original Nachricht --------
Betreff: [amsat-bb] Re Compass-1 recovery efforts
Gesendet: Mo, 18. Aug 2008
Von: Alan Cresswell<alancresswell(AT)xtra.co.nz>
> Hi Mike,
>
> All commands sent and acknowledged at 2302 UT on Compass 8 deg pass.
>
> Alan
> ZL2BX
>
> _______________________________________________
> 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
>
--- original Nachricht Ende ----
------------------------------
Message: 8
Date: Mon, 18 Aug 2008 04:28:34 -0400
From: "9w2qc(AT)9w2qc.net" <9w2qc(AT)9w2qc.net>
Subject: [amsat-bb] COMPASS-1 Recovery + Cute1.7+APDII & SEEDS Report
To: mail(AT)mike-rupprecht.de, amsat-bb(AT)amsat.org
Cc: sangatsingh(AT)gmail.com, cute1.7_receive(AT)lss.mes.titech.ac.jp,
seeds_message(AT)forth.aero.cst.nihon-u.ac.jp
Message-ID: <380-2200881188283458(AT)M2W039.mail2web.com>
Content-Type: text/plain; charset=iso-8859-1
Dear All,
Had two passes of Compass-1 this morning as below:
1001 Local, 0201 UTC, 21 degrees
1137 Local, 0337 UTC, 16 degrees
Attempted to uplink the usual command cycle, but unfortunately nothing was
heard this time. Its seems that around this two time period, the
satellite's solar panel does not seem to be getting any sun. This might
explain why Delfi-C3 is always off over West Malaysia except during 0900
Local or 0100 UTC passes.
I will keep on trying when time permits and report to the BB. I wish all
the best to the Compass team on their recovery efforts.
Below are four recordings of CUTE-1.7+APD II and SEEDS this morning. Sorry
for the long interruption of my telemetry contribution. This was due to a
PSU failure, unfortunately.
(Not full pass, as the passes overlaps COMPASS-1, which I have gave
priority to)
18 August, 0215 UTC, 24 degrees, CUTE-1.7+APDII
http://www.9w2qc.net/amsatbb/cute18aug1015-24.mp3
18 August, 0350 UTC, 13 degrees, CUTE-1.7+APDII
http://www.9w2qc.net/amsatbb/cute18aug1150-13.mp3
18 August, 0220 UTC, 33 degrees, SEEDS
http://www.9w2qc.net/amsatbb/seeds18aug1020-33.mp3
18 August, 0354 UTC, 9 degrees, SEEDS
http://www.9w2qc.net/amsatbb/seeds18aug1154-9.mp3
73,
Sion Chow Q. C.,
9W2QC.
--------------------------------------------------------------------
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------------------------------
Message: 9
Date: Mon, 18 Aug 2008 10:55:52 +0200
From: "Mike Rupprecht" <mail(AT)mike-rupprecht.de>
Subject: [amsat-bb] COMPASS recovery efforts :-)
To: <amsat-bb(AT)amsat.org>
Message-ID: <00c401c90110$3859bf00$a90d3d00$(AT)de>
Content-Type: text/plain; charset="us-ascii"
Hi all,
good news ! Tetsu (JA0CAW) heard the beacon at 00:23 UTC over Japan !
A great thank especially to Alan (ZL2BX) who switched the heater
successfully off for 3 times (at 1946, 2124 and 2302 UTC), Sion (9W2QC and
Bob (W1ICW).
And of course to all who tried her best - thanks for your time and support.
This is a good sign, that the batteries will be charged. Please continue to
send the 4 commands to COMPASS whenever you hear the beacon or COMPASS is in
full sunlight.
Let's hope the recovery efforts are a success!
Respectfully,
Mike
DK3WN
Dear Mike
The mail that I sent Compass Team is sent.
73
JA0CAW(Testu)
**************************
Dear Kevin
COMPASS-Beacon Report
I heard the Compass Beacon what Beacon might.
I slowed the preparation for the recording, and was able to record
only by the last two frames.
However, the conviction is not popular whether this is Compass Beacon..
Please hear the recording.
Received time:UTC 00:23
Aug-18-2008
UTC Aos 00:14 ELMax(46.0) 00:21 Los 00:27
------------------------------
Message: 10
Date: Mon, 18 Aug 2008 11:08:57 +0200
From: "Mike Rupprecht" <mail(AT)mike-rupprecht.de>
Subject: [amsat-bb] COMPASS-1 beacon
To: <amsat-bb(AT)amsat.org>
Message-ID: <00cc01c90112$0c381190$24a834b0$(AT)de>
Content-Type: text/plain; charset="us-ascii"
Hi all,
If you hear the COMPASS-1 beacon on 437.275 MHz (CW) please report your
results to us.
There is a simple decoder to download here:
<http://www.dk3wn.info/files/compass.zip>
http://www.dk3wn.info/files/compass.zip
compass ff073900070300210000a300ff
^
this "1" means - heater ON
In this case you can try to send the important command ****#14#200#. And the
other ones as well..
COMPASS is in emergency mode - so the beacon comes every 8 minutes. Please
listen and have a little patience :-)
Thank you very much for your efforts,
73, Mike
DK3WN
------------------------------
Message: 11
Date: Mon, 18 Aug 2008 09:32:51 -0000
From: "Alan Cresswell" <alancresswell(AT)xtra.co.nz>
Subject: [amsat-bb] Re: COMPASS recovery efforts :-)
To: <amsat-bb(AT)amsat.org>
Message-ID: <001c01c90115$6374a6a0$0301010a(AT)Cresswell2>
Content-Type: text/plain; charset="us-ascii"
Hi again Mike,
Have just had a Compass pass here in eclipse. On the off chance I sent the
heater off command and it was accepted at 0912. Further commands gave no
response. I tried again shortly before LOS and commands 1 and 2 were
accepted. This was a 16 deg pass. The next pass is better but not sure if
you want commands sent during eclipse. Should I try again on the next pass?
Alan
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] On
Behalf Of Mike Rupprecht
Sent: Monday, 18 August 2008 08:56
To: amsat-bb(AT)amsat.org
Subject: [amsat-bb] COMPASS recovery efforts :-)
Hi all,
good news ! Tetsu (JA0CAW) heard the beacon at 00:23 UTC over Japan !
A great thank especially to Alan (ZL2BX) who switched the heater
successfully off for 3 times (at 1946, 2124 and 2302 UTC), Sion (9W2QC and
Bob (W1ICW).
And of course to all who tried her best - thanks for your time and support.
This is a good sign, that the batteries will be charged. Please continue to
send the 4 commands to COMPASS whenever you hear the beacon or COMPASS is in
full sunlight.
Let's hope the recovery efforts are a success!
Respectfully,
Mike
DK3WN
Dear Mike
The mail that I sent Compass Team is sent.
73
JA0CAW(Testu)
**************************
Dear Kevin
COMPASS-Beacon Report
I heard the Compass Beacon what Beacon might.
I slowed the preparation for the recording, and was able to record
only by the last two frames.
However, the conviction is not popular whether this is Compass Beacon..
Please hear the recording.
Received time:UTC 00:23
Aug-18-2008
UTC Aos 00:14 ELMax(46.0) 00:21 Los 00:27
_______________________________________________
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: 12
Date: Mon, 18 Aug 2008 11:10:34 -0000
From: "Alan Cresswell" <alancresswell(AT)xtra.co.nz>
Subject: [amsat-bb] Re: COMPASS recovery efforts :-)
To: <amsat-bb(AT)amsat.org>
Message-ID: <001d01c90123$0a2ffcd0$0301010a(AT)Cresswell2>
Content-Type: text/plain; charset="us-ascii"
Hi Mike,
****14#200# command sent twice at 1047 UT and accepted. Did not send any
other commands. Tried again once or twice at higher elevations but no
response.
Alan
ZL2BX
-----Original Message-----
From: Mike Rupprecht [mailto:mail(AT)mike-rupprecht.de]
Sent: Monday, 18 August 2008 09:50
To: Alan Cresswell
Subject: Re: [amsat-bb] Re: COMPASS recovery efforts :-)
Hi Alan,
you are really restless :-)
Yes, please try it whenever you can. If COMPASS heard during an eclipse
shows me that he didn't made a hard reset.
The most important command is the ****14#200#. If the heater remains off we
have a good chance that the batteries will be further charged in sunlight.
If the voltage reaches an value of 3.7 volts then COMAPSS will switch back
to normal mode.
What should we do without you ????
Gracefully thanks,
Mike
----- original Nachricht --------
Betreff: [amsat-bb] Re: COMPASS recovery efforts :-)
Gesendet: Mo, 18. Aug 2008
Von: Alan Cresswell<alancresswell(AT)xtra.co.nz>
> Hi again Mike,
>
> Have just had a Compass pass here in eclipse. On the off chance I sent
the
> heater off command and it was accepted at 0912. Further commands gave no
> response. I tried again shortly before LOS and commands 1 and 2 were
> accepted. This was a 16 deg pass. The next pass is better but not sure
if
> you want commands sent during eclipse. Should I try again on the next
> pass?
>
> Alan
>
> -----Original Message-----
> From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org]
On
> Behalf Of Mike Rupprecht
> Sent: Monday, 18 August 2008 08:56
> To: amsat-bb(AT)amsat.org
> Subject: [amsat-bb] COMPASS recovery efforts :-)
>
> Hi all,
>
>
>
> good news ! Tetsu (JA0CAW) heard the beacon at 00:23 UTC over Japan !
>
>
>
> A great thank especially to Alan (ZL2BX) who switched the heater
> successfully off for 3 times (at 1946, 2124 and 2302 UTC), Sion (9W2QC
and
> Bob (W1ICW).
>
> And of course to all who tried her best - thanks for your time and
support.
>
>
>
> This is a good sign, that the batteries will be charged. Please continue
to
> send the 4 commands to COMPASS whenever you hear the beacon or COMPASS is
> in
> full sunlight.
>
>
>
> Let's hope the recovery efforts are a success!
>
>
>
> Respectfully,
>
> Mike
>
> DK3WN
>
>
>
>
>
>
>
>
>
> Dear Mike
>
>
>
> The mail that I sent Compass Team is sent.
>
>
>
> 73
>
>
>
> JA0CAW(Testu)
>
>
>
> **************************
>
>
>
>
>
> Dear Kevin
>
>
>
> COMPASS-Beacon Report
>
>
>
> I heard the Compass Beacon what Beacon might.
>
>
> I slowed the preparation for the recording, and was able to record
> only by the last two frames.
>
>
> However, the conviction is not popular whether this is Compass Beacon..
>
>
> Please hear the recording.
>
>
>
> Received time:UTC 00:23
>
>
>
> Aug-18-2008
>
>
>
> UTC Aos 00:14 ELMax(46.0) 00:21 Los 00:27
>
>
>
> _______________________________________________
> 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
>
>
> _______________________________________________
> 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
>
--- original Nachricht Ende ----
------------------------------
Message: 13
Date: Mon, 18 Aug 2008 09:05:45 -0500
From: Joe <nss(AT)mwt.net>
Subject: [amsat-bb] Re: DIY: Parabolic mirror
To: mvm <amvm(AT)skynet.be>, amsat-bb(AT)amsat.org
Message-ID: <48A981B9.1030901(AT)mwt.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Yes,, BUT,,
it may be good enough for a low sreq radio signal, but in this casting
they still had to make the reflecting surface the same old way,
grinding with grits, to even out the surface,, then polish it, then
paraboloze it.
all the spin casting does it take the "Rough Grinding" portion out of
the process, since 90%+ of the concave shape is raedy.
But as is, it's still no where near as accurate as it needs to be for
optical work.
Radio, maybe,, optical nope.
mvm wrote:
> Joe,
>
> ??
>
> As you surely can see this is an example of rotation casting. In this
> case of a large mirror.
>
> Joe schreef:
>
>> And your point is?
>>
>> mvm wrote:
>>
>>> http://medusa.as.arizona.edu/lbto/tech/mirror.htm
>>>
>>> Greg D. schreef:
>>>
>>>
>>>> Best "form" is probably not to have one. Wasn't there a post
>>>> recently talking about making a mirror by spinning casting resin in
>>>> a shallow round dish? Perhaps a good use for that old record (*)
>>>> player gathering dust in the garage...
>>>>
>>>> Greg KO6TH
>>>>
>>>> (*) an ancient mechanical instrument for storing music in an analog
>>>> form
>>>>
>>>>
>>>> ----------------------------------------
>>>>
>>>>
>>>>> Date: Thu, 14 Aug 2008 15:59:26 -0400
>>>>> From: ka2pbt(AT)arrl.net
>>>>> To: amsat-bb(AT)amsat.org
>>>>> Subject: [amsat-bb] Re: DIY: Parabolic mirror
>>>>>
>>>>> agree ..... what would be a good form to start with rather than
>>>>> the bottom
>>>>> of some random water tank??
>>>>>
>>>>> Assuming you had a proper form ... I think the construction
>>>>> process has
>>>>> merit.
>>>>>
>>>>> The next step would be to coat the fiberglass shell with something
>>>>> metallic
>>>>> ... foil ... screen ????
>>>>>
>>>>>
>>>>>
>>>>> On Thu, Aug 14, 2008 at 2:04 PM, Franklin Antonio wrote:
>>>>>
>>>>>
>>>>>
>>>>>> At 07:34 AM 8/14/2008, Joe wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>> Too bad it's not parabolic, and probably far from even spherical.
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> Precisely. Apparently the author thinks "parabolic" just means
>>>>>> some kinda
>>>>>> symmetrical concave surface.
>>>>>>
>>>>>> This guy obviously isn't an antenna guy.
>>>>>>
>>>>>> I've found Make magazine to be a crock in general. Too bad.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> 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
>>>>>
>>>>
>>>> _________________________________________________________________
>>>> Reveal your inner athlete and share it with friends on Windows Live.
>>>> http://revealyourinnerathlete.windowslive.com?locale=en-
us&ocid=TXT_TAGLM_WLYIA_whichathlete_us
>>>>
>>>> _______________________________________________
>>>> 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
>>>>
>>>>
>>>
>>>
>>> _______________________________________________
>>> 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
>>>
>>>
------------------------------
_______________________________________________
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 421
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