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CX2SA > SATDIG 07.05.08 06:15l 747 Lines 22149 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: DELFI decoded (Mark L. Hammond)
2. Re: TLE lottery (Mike Rupprecht)
3. Re: TLE lottery (Jeroen Vreeken)
4. Re: TLE lottery (Alan Cresswell)
5. Re: TrakBox Upgrade (John Kopala)
6. Getting RASCAL into SYNC (john heath)
7. Replacement for TH-D7A(G) ? (Ronald Nutter)
8. Re: Cubesat Antenna Modeling and truth? (Anthony Monteiro)
9. "Birdies" from Linksys Wireless router (Mark L. Hammond)
10. C3 heard 6-5-2008 at 8:00 and 18:55 utc (Kostas Ioannidis)
11. Re: Replacement for TH-D7A(G) ? (Jim Jerzycke)
12. Re: "Birdies" from Linksys Wireless router (Alan P. Biddle)
13. Re: "Birdies" from Linksys Wireless router
(Patrick STODDARD (WD9EWK/VA7EWK))
14. Re: Replacement for TH-D7A(G) ? (Ronald Nutter)
15. Re: "Birdies" from Linksys Wireless router
(William Liporace - NA2NA)
16. Re: SEEDS Digi-talker operation (Raul Romero CA3SOC)
----------------------------------------------------------------------
Message: 1
Date: Tue, 6 May 2008 16:36:54 -0400 (EDT)
From: "Mark L. Hammond" <n8mh(AT)embarqmail.com>
Subject: [amsat-bb] Re: DELFI decoded
To: amsat-bb(AT)AMSAT.Org, Bruce Robertson <ve9qrp(AT)gmail.com>
Message-ID:
<405834270.282701210106214189.JavaMail.root(AT)pd02.embarq.synacor.com>
Content-Type: text/plain; charset=utf-8
Hi Bruce,
On my TS-2000x I find setting the LOW cut off around 200 Hz (or maybe 100 Hz)
and the HI cutoff around 2600 (or maybe 2400) works pretty well on 1200 BPSK
signals like Delfi-C3.
Give that a try... you can go a bit wider (100/2600), or a bit more narrow
(200/2400)..but 200/2600 should be pretty good.
73,
Mark N8MH
Date: Tue, 6 May 2008 12:04:48 -0300
From: "Bruce Robertson" <ve9qrp(AT)gmail.com>
Subject: [amsat-bb] Re: DELFI decoded
To: "Viktor Kudielka" <viktor.kudielka(AT)ieee.org>
Cc: AMSAT <amsat-bb(AT)amsat.org>
Message-ID:
<49657a760805060804xcf5383ah2810ae488bff1db9(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
It is possible to tune for RASCAL by ear. I use the following steps:
1. Tune to find the frequency with the greatest s-meter reading
2. Listen to the tone part of the signal, not the raspy part, and aim
for a note much higher than a regular CW signal.
3. When the green sync light goes on in RASCAL, fine-tune to centre
the signal at 1600 Hz.
Does anyone know how narrow a SSB filter I can apply to this signal? I
have a TS-2000, which is quite adjustable. For now I'm using it wide
open. I know the centre signal is 1600 Hz, which is quite high. How
high/low do the sidebands go?
------------------------------
Message: 2
Date: Tue, 6 May 2008 22:47:56 +0200
From: "Mike Rupprecht" <mail(AT)mike-rupprecht.de>
Subject: [amsat-bb] Re: TLE lottery
To: "'Colin Hurst'" <cjhurst(AT)bigpond.net.au>, "'Jeroen Vreeken'"
<pe1rxq(AT)amsat.org>, <amsat-bb(AT)amsat.org>
Message-ID: <000001c8afba$76dbe700$6493b500$(AT)de>
Content-Type: text/plain; charset="iso-8859-1"
Hi,
now I am sure with the following TLE:
32787 OBJECT E COMPASS-1
32791 OBJECT J SEEDS
Could hear SEEDS until 0.5 deg elevation.
73, Mike
DK3WN
-----Urspr?ngliche Nachricht-----
Von: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] Im
Auftrag von Mike Rupprecht
Gesendet: Dienstag, 6. Mai 2008 07:22
An: Colin Hurst; Jeroen Vreeken; amsat-bb(AT)amsat.org
Betreff: [amsat-bb] Re: TLE lottery
Hi,
I agree Colin, Compass appearing before Cute but we work with 32787 (E) and
32785 for Cute (C) with good results.
73, Mike
DK3WN
Betreff: [amsat-bb] Re: TLE lottery
Gesendet: Di, 06. Mai 2008
Von: Colin Hurst<cjhurst(AT)bigpond.net.au>
> Jeroen,
> I do agree with your observations.
> My observations have Compass appearing before Cute1.7+APDII.
> I would suggest Compass is H and Delfi-C3 is J.
> But time will tell.
> Colin VK5HI.
>
>
> > -----Original Message-----
> > From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-
bounces(AT)amsat.org]On
> > Behalf Of Jeroen Vreeken
> > Sent: Tuesday, 6 May 2008 8:32 AM
> > To: amsat-bb(AT)amsat.org
> > Subject: [amsat-bb] TLE lottery
> >
> >
> > Hi,
> >
> > For the last few days I used object H (#32790) for tracking Delfi-C3. It
> > is also the current object mentioned on the delfi-c3 website.
> > However the last few passes it seems that it is getting
> > increasingly late.
> > Object J (#32791) seems to fit much better....
> > Is anybody else seeing the same?
> >
> > 73,
> > Jeroen PE1RXQ
> >
> > _______________________________________________
> > 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 ----
_______________________________________________
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: 3
Date: Tue, 06 May 2008 23:04:43 +0200
From: Jeroen Vreeken <pe1rxq(AT)amsat.org>
Subject: [amsat-bb] Re: TLE lottery
To: Mike Rupprecht <mail(AT)mike-rupprecht.de>
Cc: amsat-bb(AT)amsat.org
Message-ID: <4820C7EB.4070507(AT)amsat.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Mike Rupprecht wrote:
> Hi,
>
> now I am sure with the following TLE:
>
> 32787 OBJECT E COMPASS-1
> 32791 OBJECT J SEEDS
>
Those seem likely...
I used object J to track Delfi tonight and it was clearly earlier than
predicted.
So H is late, J early.....
Object G (#32789) seems to be in between those two... So I am guesing
now (waiting for the next pass which will be in an hour) that G is Delfi....
73,
Jeroen PE1RXQ
------------------------------
Message: 4
Date: Tue, 6 May 2008 21:34:53 -0000
From: "Alan Cresswell" <alancresswell(AT)xtra.co.nz>
Subject: [amsat-bb] Re: TLE lottery
To: <amsat-bb(AT)amsat.org>
Message-ID: <000401c8afc1$060b1e40$0301010a(AT)Cresswell2>
Content-Type: text/plain; charset="us-ascii"
Hi Jeroen,
I find exactly the same. H late, J early.
Still to try G but it looks a good candidate for Delfi.
Alan
ZL2BX
-----Original Message-----
From: amsat-bb-bounces(AT)amsat.org [mailto:amsat-bb-bounces(AT)amsat.org] On
Behalf Of Jeroen Vreeken
Sent: Tuesday, 6 May 2008 21:05
To: Mike Rupprecht
Cc: amsat-bb(AT)amsat.org
Subject: [amsat-bb] Re: TLE lottery
Mike Rupprecht wrote:
> Hi,
>
> now I am sure with the following TLE:
>
> 32787 OBJECT E COMPASS-1
> 32791 OBJECT J SEEDS
>
Those seem likely...
I used object J to track Delfi tonight and it was clearly earlier than
predicted.
So H is late, J early.....
Object G (#32789) seems to be in between those two... So I am guesing
now (waiting for the next pass which will be in an hour) that G is Delfi....
73,
Jeroen PE1RXQ
_______________________________________________
Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 5
Date: Tue, 6 May 2008 15:22:23 -0700
From: "John Kopala" <jkopala(AT)gmail.com>
Subject: [amsat-bb] Re: TrakBox Upgrade
To: <amsat-bb(AT)amsat.org>
Message-ID: <0a7201c8afc7$a912e680$6701a8c0(AT)sierrap4dual>
Content-Type: text/plain; charset="iso-8859-1"
At 06:04 PM 5/5/2008, you wrote:
>hello all
>
>my 'old' trakbox (dusty!) ,after 5 years of sleep, doesnt work in
>stand alone mode anymore ; terminal mode works perfectly. Ram has been
>cleared , clock adjusted, new keplers loaded ; version is 3.50b.
>
>Any ideas ?
>
>73
>
>renauld on4kvi
The first thing I would suggest is to change to 3.50d. TAPR has ROMs and the
image is readily available if you can program EPROMs.
Also check the battery to see if is still alive. If you need parts let me
know as I still have most everything in the kits.
After making these changes let me know your results.
73, Jack - WA4EJR
------
One more addition, if you order a new EPROM, make sure you order the proper
one depending upon whether your box has been upgraded - Basic or Turbo with
80C320 and 22 MHz clock.
John Kopala
N7JK
------------------------------
Message: 6
Date: Tue, 6 May 2008 23:31:25 +0100
From: "john heath" <g7hia(AT)btinternet.com>
Subject: [amsat-bb] Getting RASCAL into SYNC
To: "amsat" <amsat-bb(AT)amsat.org>
Message-ID: <000e01c8afc8$eb88f300$4001a8c0(AT)MainPC>
Content-Type: text/plain; charset="iso-8859-1"
Hi,
Thanks for the tip on this bb to use something like Spectran to tune the radio
so that the strongest part of the signal is on 1600 Hz.
Here is an useful observation - constant manual frequency adjustments of the
radio seem to defeat the Costas Loop ? and prevent the software from locking
onto the signal. Get close to 1600 then wait a few seconds to allow the
software to do its job.
Lost sync a few times due to deep QSB but got 172 packets on the afternoon
pass at IO92IO. I am sure this is by no means a record but its a lot better
than I have managerd so far.
Hope this helps.
73 John G7HIA
------------------------------
Message: 7
Date: Tue, 06 May 2008 17:35:26 -0500
From: Ronald Nutter <rnutter(AT)networkref.com>
Subject: [amsat-bb] Replacement for TH-D7A(G) ?
To: amsat-bb(AT)amsat.org
Message-ID: <4820DD2E.9040602(AT)networkref.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I stopped by the local ham store today to buy the TH-D7A(G) but was told
they were out of stock and it had been discontinued. Has anyone heard
of its replacement and have any info ?
I was thinking of getting this to start working the Digital birds.
Thanks,
Ron
KA4KYI
------------------------------
Message: 8
Date: Tue, 06 May 2008 18:48:07 -0400
From: Anthony Monteiro <aa2tx(AT)comcast.net>
Subject: [amsat-bb] Re: Cubesat Antenna Modeling and truth?
To: bruninga(AT)usna.edu
Cc: amsat-bb(AT)amsat.org, aa2tx(AT)amsat.org
Message-ID: <20080506225025.856MoPF00EA6n(AT)mailbox5.ucsd.edu>
Content-Type: text/plain; charset="us-ascii"; format=flowed
At 12:12 PM 5/4/2008, Robert Bruninga wrote:
>A big problem on small satellites (cubesats) is how to match
>antennas...
>...
>Has anyone had other successes? Just thinking what we should be
>telling these students that are building cubesats. A 6" whip
>for 70cm is not too bad on a 4" cubesat, but 2m is compltely
>different...
Hi Bob,
This problem is not new. Walt Maxwell, W2DU had the same problem
when working on antenna for big satellites at RCA Astro-Electronics.
His solution was to use ferrites to decouple the feed cable from the
satellite body. Then you can just use a directional coupler outside
the satellite to measure the return loss.
I have used this and it works pretty well as long as you keep the feed
cables at 90 degrees from the antenna E field. You can use the EZNEC
model to determine the expected E-field.
You need to make sure the ferrites provide at least 10x the impedance
of the antenna at the satellite (i.e. if you expect 35 ohms for the antenna,
you need at least 350 ohms from the ferrites.) Also, you MAY need to
break up any resonances on the cable by putting ferrites every 1/8 wavelength
on the feed cable if you cannot get the cable at a true 90 degrees.
Note that 90 degrees will not likely be directly broadside from the satellite
especially for a 4" cube on 2 meters.
73,
Tony AA2TX
------------------------------
Message: 9
Date: Tue, 06 May 2008 18:58:28 -0400
From: "Mark L. Hammond" <n8mh(AT)embarqmail.com>
Subject: [amsat-bb] "Birdies" from Linksys Wireless router
To: amsat-bb(AT)amsat.org
Message-ID: <15.A8.32234.292E0284(AT)smtp08.embarq.synacor.com>
Content-Type: text/plain; charset="us-ascii"
Hello all,
The launch of Delfi-C3 has brought to my attention a very strong birdie at
145.930 MHz that clearly comes from the Linksys WRT54G Wireless router that
sits in the shack. Forcing the wireless signal to another frequency/channel
has no impact whatsoever...
Anybody on the list have a clever solution (other than 'get a different
router' or 'move it' or 'shut it off', etc...hi hi) that they may have used
for a similar problem?
Thanks,
Mark L. Hammond [N8MH]
------------------------------
Message: 10
Date: Wed, 7 May 2008 02:13:57 +0300
From: "Kostas Ioannidis" <kostas.ioannidis(AT)gmail.com>
Subject: [amsat-bb] C3 heard 6-5-2008 at 8:00 and 18:55 utc
To: amsat-bb(AT)amsat.org
Message-ID:
<6cd5903a0805061613t388efd73weef8abb6750166cd(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
C3 heard 6-5-2008 at 8:00 and 18:55 utc at 145.930Mhz sending tlm.
Packets uploaded to the server.
73 de sw1ixp
------------------------------
Message: 11
Date: Tue, 6 May 2008 16:14:31 -0700 (PDT)
From: Jim Jerzycke <kq6ea(AT)pacbell.net>
Subject: [amsat-bb] Re: Replacement for TH-D7A(G) ?
To: Ronald Nutter <rnutter(AT)networkref.com>, amsat-bb(AT)amsat.org
Message-ID: <943267.19141.qm(AT)web80605.mail.mud.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1
I just checked the AES website, and it has a "*" after
the listing indicating it's discontinued.
Perhaps Kenwood is working on a new one to go with the
TM-D710?
Jim KQ6EA
--- Ronald Nutter <rnutter(AT)networkref.com> wrote:
> I stopped by the local ham store today to buy the
> TH-D7A(G) but was told
> they were out of stock and it had been discontinued.
> Has anyone heard
> of its replacement and have any info ?
>
> I was thinking of getting this to start working the
> Digital birds.
>
> Thanks,
> Ron
> KA4KYI
> _______________________________________________
> 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: Tue, 6 May 2008 18:31:55 -0500
From: "Alan P. Biddle" <APBIDDLE(AT)UNITED.NET>
Subject: [amsat-bb] Re: "Birdies" from Linksys Wireless router
To: <amsat-bb(AT)amsat.org>
Message-ID: <312F962B35E74E9EB614C6733DBB022A(AT)WA4SCA>
Content-Type: text/plain; charset="us-ascii"
Mark,
If they ever get around to using it, there is also a nice birdie on 145.870!
My solution is to use ferrites on both the power and Ethernet cables from
the router, and also use the mast mounted preamp. That is far enough away
that the downlink swamps the birdie. Since most of the noise goes away when
you unplug the Ethernet cable to the desktop, I have been considering
switching that to RF as well, as I have an unused PCI card handy.
Alan
WA4SCA
------------------------------
Message: 13
Date: Tue, 6 May 2008 16:59:55 -0700
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb(AT)wd9ewk.net>
Subject: [amsat-bb] Re: "Birdies" from Linksys Wireless router
To: amsat-bb(AT)amsat.org
Message-ID:
<2e18ad3e0805061659h38a3b722webfff32466829f17(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
> If they ever get around to using it, there is also a nice birdie on
145.870!
> My solution is to use ferrites on both the power and Ethernet cables from
> the router, and also use the mast mounted preamp. That is far enough away
> that the downlink swamps the birdie. Since most of the noise goes away
when
> you unplug the Ethernet cable to the desktop, I have been considering
> switching that to RF as well, as I have an unused PCI card handy.
Another option beyond the ferrites may be to try a different power supply
or AC adapter. Most of these routers are now using a small switching
power supply, which are lighter and smaller than a traditional
transformer-based wall-wart adapter would be for the same
voltage/current requirement.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
------------------------------
Message: 14
Date: Tue, 06 May 2008 18:22:25 -0500
From: Ronald Nutter <rnutter(AT)networkref.com>
Subject: [amsat-bb] Re: Replacement for TH-D7A(G) ?
To: Jim Jerzycke <kq6ea(AT)pacbell.net>
Cc: amsat-bb(AT)amsat.org
Message-ID: <4820E831.10902(AT)networkref.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
That's kinda what I thought. Unfortunately, going to Dayton this year
isnt an option for me, so I guess I will have to wait to hear what
announcements will come from others that will be there.
Thanks,
Ron
Jim Jerzycke wrote:
> I just checked the AES website, and it has a "*" after
> the listing indicating it's discontinued.
> Perhaps Kenwood is working on a new one to go with the
> TM-D710?
> Jim KQ6EA
>
> --- Ronald Nutter <rnutter(AT)networkref.com> wrote:
>
>> I stopped by the local ham store today to buy the
>> TH-D7A(G) but was told
>> they were out of stock and it had been discontinued.
>> Has anyone heard
>> of its replacement and have any info ?
>>
>> I was thinking of getting this to start working the
>> Digital birds.
>>
>> Thanks,
>> Ron
>> KA4KYI
>> _______________________________________________
>> 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: Tue, 6 May 2008 20:55:12 -0400
From: "William Liporace - NA2NA" <will-na2na(AT)nycap.rr.com>
Subject: [amsat-bb] Re: "Birdies" from Linksys Wireless router
To: <amsat-bb(AT)amsat.org>, "Mark L. Hammond" <n8mh(AT)embarqmail.com>
Message-ID: <003701c8afdd$01d9e6f0$6501a8c0(AT)na2nawindowsxp>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
I can suggest a couple of things...
Internal or external P/S.... Internal, try torroids. external (wall worth)
try a different P/S.
Use only high quality CAT5E or CAT6 cables. Do not use cheap ones! There is
a difference.
WRT54G can be vastly improved by installing the Linux based OS. I have a
better signal, lower noise and better security. I am much happier. Worth
trying (it will void any warranty).
That is what I can offer. Hope it helps,
Will WC2L
----- Original Message -----
From: "Mark L. Hammond" <n8mh(AT)embarqmail.com>
To: <amsat-bb(AT)amsat.org>
Sent: Tuesday, May 06, 2008 6:58 PM
Subject: [amsat-bb] "Birdies" from Linksys Wireless router
> Hello all,
>
> The launch of Delfi-C3 has brought to my attention a very strong birdie at
> 145.930 MHz that clearly comes from the Linksys WRT54G Wireless router
> that sits in the shack. Forcing the wireless signal to another
> frequency/channel has no impact whatsoever...
>
> Anybody on the list have a clever solution (other than 'get a different
> router' or 'move it' or 'shut it off', etc...hi hi) that they may have
> used for a similar problem?
>
> Thanks,
>
> Mark L. Hammond [N8MH]
>
>
> _______________________________________________
> 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: 16
Date: Tue, 6 May 2008 22:50:56 -0400
From: "Raul Romero CA3SOC" <ce3soc(AT)gmail.com>
Subject: [amsat-bb] Re: SEEDS Digi-talker operation
To: "Masahiko Yamazaki" <yamazaki(AT)forth.aero.cst.nihon-u.ac.jp>,
<AMSAT-BB(AT)amsat.org>
Message-ID: <629BFE0EDFF54453BF41CFA8681FF5C6(AT)p42800>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Only copy for MixW32 in CW mode
Q 1Y G U S E EDS P 4 00 724 73 0 D 5 2 F F E 0 0 8 00 7 00 9 0 07 0 0 8 0 0
7 A 0 3 A 0 7 A0 D A 5
in LOS For Minor Doppler Decode for mixw32
73 Raul
CA3SOC
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----- Original Message -----
From: "Masahiko Yamazaki" <yamazaki(AT)forth.aero.cst.nihon-u.ac.jp>
To: <AMSAT-BB(AT)AMSAT.Org>
Sent: Friday, May 02, 2008 8:47 AM
Subject: [amsat-bb] SEEDS Digi-talker operation
> Dear All,
>
> I'm Masahiko Yamazaki at Nihon University (JQ1YGV).
>
> Now we are conducting "FM operation", because SEEDS is currently over
> charged.
> After we have discussed the production of electricity and power
> consumption,
> we decided the operation of Digi-talker Mode.
>
> I'm sorry for the late notice.
>
> We have a plan to conduct "Digi-talker Mode".
>>From May 2, 12:45 to 15:45(UTC)
>
> I would like you to recive "SEEDS voice"!!
> And, please send your data.
>
> We will have a plan to conduct "Digi-talker Mode" aftertime.
> Please check our website!!
> http://cubesat.aero.cst.nihon-u.ac.jp/index.html
>
> Please continue your favors toward the reception cooperation about SEEDS
> in
> the future.
>
> -------------------------------------
> Masahiko YAMAZAKI
> yamazaki(AT)forth.aero.cst.nihon-u.ac.jp
> Department of Aerospace Engineering
> College of Science and Technology
> Nihon University
> 7-24-1 Narashinodai, Funabashi, Chiba 274-8501
> JAPAN
>
> _______________________________________________
> 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 228
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