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CX2SA > SATDIG 03.07.08 03:35l 784 Lines 27984 Bytes #999 (0) @ WW
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To : SATDIG@WW
Today's Topics:
1. Logbook Software Suggestions (John Henderson N4NAB)
2. NASA's American Student Moon Orbiter... (Dave hartzell)
3. Re: NASA's American Student Moon Orbiter...
(Nigel Gunn G8IFF/W8IFF)
4. Re: NASA's American Student Moon Orbiter... (Trevor)
5. AO-51 Field Day mode (Andrew Glasbrenner)
6. Re: Logbook Software Suggestions (Alan P. Biddle)
7. Re: NASA's American Student Moon Orbiter... (Andrew Glasbrenner)
8. Re: NASA's American Student Moon Orbiter... (Bill Ress)
9. Re: NASA's American Student Moon Orbiter... (Graham Shirville)
10. Re: NASA's American Student Moon Orbiter... (Joe)
11. Re: NASA's American Student Moon Orbiter... (Dave hartzell)
12. Office Closed (Martha)
13. Re: AO-51 Field Day mode (John Price)
14. Re: Commercial Mode L Antenna sources (w7lrd(AT)comcast.net)
15. Re: NASA's American Student Moon Orbiter... (Andrew Glasbrenner)
----------------------------------------------------------------------
Message: 1
Date: Wed, 2 Jul 2008 15:58:10 -0400
From: "John Henderson N4NAB" <jah(AT)ec.rr.com>
Subject: [amsat-bb] Logbook Software Suggestions
To: <amsat-bb(AT)amsat.org>
Message-ID: <000001c8dc7d$f4386b20$dca94160$(AT)rr.com>
Content-Type: text/plain; charset="us-ascii"
Would appreciate a suggestion for logbook sw that includes satellite
operations. I have looked at a number of them but you have to " force feed"
the sat info.
Thanks,
John
John Henderson N4NAB
212 Bayside Drive
Cape Carteret, NC 28584
------------------------------
Message: 2
Date: Wed, 2 Jul 2008 13:21:35 -0700
From: "Dave hartzell" <hartzell(AT)gmail.com>
Subject: [amsat-bb] NASA's American Student Moon Orbiter...
To: "Amsat BB" <amsat-bb(AT)amsat.org>
Message-ID:
<1c096fd70807021321s76214117v8aaa0999a6c39328(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
http://www.spaceref.com/news/viewpr.html?pid=25839
http://asmo.arc.nasa.gov/
Wouldn't it be fun to have a transponder on this! ;-)
------------------------------
Message: 3
Date: Wed, 02 Jul 2008 16:45:37 -0400
From: Nigel Gunn G8IFF/W8IFF <nigel(AT)ngunn.net>
Subject: [amsat-bb] Re: NASA's American Student Moon Orbiter...
To: Dave hartzell <hartzell(AT)gmail.com>
Cc: Amsat BB <amsat-bb(AT)amsat.org>
Message-ID: <486BE8F1.3020705(AT)ngunn.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Probably not. Would it not spend a significant amount of it's time behind the
moon where you can't see it?
Dave hartzell wrote:
> http://www.spaceref.com/news/viewpr.html?pid=25839
> http://asmo.arc.nasa.gov/
>
> Wouldn't it be fun to have a transponder on this! ;-)
> _______________________________________________
> 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. G8IFF W8IFF (was KC8NHF)
59 Beadlemead, Milton Keynes, MK6 4HF, England. 07951079089 OR
1865 El Camino Drive, Xenia, OH 45385-1115, USA 937 825 5032
e-mail nigel(AT)ngunn.net www http://www.ngunn.net
Member of ARRL, GQRP #11396, QRPARCI #11644, SOC #548, Flying Pig #385,
Dayton ARA #2128, AMSAT-NA AMSAT-UK, LM-1691, MKARS,
<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
------------------------------
Message: 4
Date: Wed, 2 Jul 2008 20:53:16 +0000 (GMT)
From: Trevor <m5aka(AT)yahoo.co.uk>
Subject: [amsat-bb] Re: NASA's American Student Moon Orbiter...
To: AMSAT BB <amsat-bb(AT)amsat.org>
Message-ID: <51231.66950.qm(AT)web27203.mail.ukl.yahoo.com>
Content-Type: text/plain; charset=utf-8
--- On Wed, 2/7/08, Dave hartzell <hartzell(AT)gmail.com> wrote:
> http://www.spaceref.com/news/viewpr.html?pid=25839
> http://asmo.arc.nasa.gov/
>
> Wouldn't it be fun to have a transponder on this! ;-)
Fun yes, but dare I say it, a waste of precious Volunteer resources.
All lunar orbits are inherently unstable and will impact after a couple of
years. The link budget requirements would not attract a mass user base.
I suspect the number of Technically Capable volunteers is already being thinly
stretched in trying to provide both the primary objective Phase-IV Lite
(funded by Federal Government dollars) and the secondary objective the Eagle
HEO.
73 Trevor M5AKA
__________________________________________________________
Not happy with your email address?.
Get the one you really want - millions of new email addresses available now at
Yahoo! http://uk.docs.yahoo.com/ymail/new.html
------------------------------
Message: 5
Date: Wed, 2 Jul 2008 17:04:18 -0400
From: "Andrew Glasbrenner" <glasbrenner(AT)mindspring.com>
Subject: [amsat-bb] AO-51 Field Day mode
To: <ao51-modes(AT)AMSAT.Org>, <amsat-bb(AT)AMSAT.Org>
Message-ID: <D94C58AFD9BA4CCCAC3BD1B211728767(AT)Andrewlaptop>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
In reading through the e-mails to -bb, it seems L/U was well received among
the membership on Field Day? I'd be interested in feedback about Field Day
for consideration of next year's mode. Feel free to cc the -bb, as I'm sure
it's of interest to many.
73, Drew KO4MA
PS Congratulations to the handful of stations who were listening to AO-16
Saturday afternoon and Sunday morning. I manually turned the satellite on
several times on each of three passes, and several stations managed QSOs in
the brief periods the old bird stayed on. Myself and the other command
station will continue to try to restart the repeater when available, and
maybe as temperatures change it will stay on a little longer, but no
promises can be made.
------------------------------
Message: 6
Date: Wed, 2 Jul 2008 15:25:45 -0500
From: "Alan P. Biddle" <APBIDDLE(AT)UNITED.NET>
Subject: [amsat-bb] Re: Logbook Software Suggestions
To: <amsat-bb(AT)amsat.org>
Message-ID: <CD062941C461408CBBD514E61830959C(AT)WA4SCA>
Content-Type: text/plain; charset="us-ascii"
John,
Take at look at the DXLab programs. You will need to download the Launcher,
which will then download and install the various components. At a minimum
you will need the logbook DXKeeper, and probably want the address program
Pathfinder, as well as the appropriate documentation. This is an extremely
versatile program, but the learning curve is reasonable. I recall one
person reporting he imported the QSOs from another logging program, changed
the couple of things which the other program did not do with the block edit,
and uploaded everything to LoTW in a couple of hours. It handles satellite
QSOs perfectly with both eQSL and LoTW, without fiddling with them. There
is a good support forum as well.
http://www.dxlabsuite.com/download.htm
Oh yes, the program is free!
Alan
WA4SCA
------------------------------
Message: 7
Date: Wed, 2 Jul 2008 17:28:17 -0400
From: "Andrew Glasbrenner" <glasbrenner(AT)mindspring.com>
Subject: [amsat-bb] Re: NASA's American Student Moon Orbiter...
To: "Trevor" <m5aka(AT)yahoo.co.uk>, "AMSAT BB" <amsat-bb(AT)amsat.org>
Message-ID: <33F6C22CB02F4AD7B02CA8BA2F24DA95(AT)Andrewlaptop>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
As far as I can recall we are pursuing both Eagle and the P4 opportunity
equally, concentrating on common elements until the details are ironed out.
Neither has been identified as a primary or secondary objective.
I agree a package on a lunar orbiter would be neat, but also that it is not
the best use of what volunteers we have. We need more folks to step up to do
things, AND we need to make better use of them when they do.
73, Drew KO4MA
----- Original Message -----
From: "Trevor" <m5aka(AT)yahoo.co.uk>
To: "AMSAT BB" <amsat-bb(AT)amsat.org>
Sent: Wednesday, July 02, 2008 4:53 PM
Subject: [amsat-bb] Re: NASA's American Student Moon Orbiter...
> --- On Wed, 2/7/08, Dave hartzell <hartzell(AT)gmail.com> wrote:
>> http://www.spaceref.com/news/viewpr.html?pid=25839
>> http://asmo.arc.nasa.gov/
>>
>> Wouldn't it be fun to have a transponder on this! ;-)
>
> Fun yes, but dare I say it, a waste of precious Volunteer resources.
>
> All lunar orbits are inherently unstable and will impact after a couple of
> years. The link budget requirements would not attract a mass user base.
>
> I suspect the number of Technically Capable volunteers is already being
> thinly stretched in trying to provide both the primary objective Phase-IV
> Lite (funded by Federal Government dollars) and the secondary objective
> the Eagle HEO.
>
> 73 Trevor M5AKA
>
>
>
> __________________________________________________________
> Not happy with your email address?.
> Get the one you really want - millions of new email addresses available
> now at Yahoo! http://uk.docs.yahoo.com/ymail/new.html
>
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 8
Date: Wed, 02 Jul 2008 14:36:29 -0700
From: Bill Ress <bill(AT)hsmicrowave.com>
Subject: [amsat-bb] Re: NASA's American Student Moon Orbiter...
To: Trevor <m5aka(AT)yahoo.co.uk>
Cc: AMSAT BB <amsat-bb(AT)AMSAT.Org>
Message-ID: <486BF4DD.4030509(AT)hsmicrowave.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Trevor,
At first I thought this could be a winner - then I read the solicitation
details.
In para 4.1 NASA says" NOTE: NASA does not foresee providing direct
funding to the universities or partners." and in para 4.2 "University
Teams Would Provide
* Launch Opportunity including launch vehicle and integration, and
insurance"
So I haven't found the good part yet.
I don't see why any University would go after this one unless they have
really, really big bucks lying about.
What did I miss??
Regards...Bill - N6GHz
Trevor wrote:
> --- On Wed, 2/7/08, Dave hartzell <hartzell(AT)gmail.com> wrote:
>
>> http://www.spaceref.com/news/viewpr.html?pid=25839
>> http://asmo.arc.nasa.gov/
>>
>> Wouldn't it be fun to have a transponder on this! ;-)
>>
>
> Fun yes, but dare I say it, a waste of precious Volunteer resources.
>
> All lunar orbits are inherently unstable and will impact after a couple of
years. The link budget requirements would not attract a mass user base.
>
> I suspect the number of Technically Capable volunteers is already being
thinly stretched in trying to provide both the primary objective Phase-IV Lite
(funded by Federal Government dollars) and the secondary objective the Eagle
HEO.
>
> 73 Trevor M5AKA
>
>
>
> __________________________________________________________
> Not happy with your email address?.
> Get the one you really want - millions of new email addresses available now
at Yahoo! http://uk.docs.yahoo.com/ymail/new.html
>
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
>
>
------------------------------
Message: 9
Date: Wed, 2 Jul 2008 22:35:54 +0100
From: "Graham Shirville" <g.shirville(AT)btinternet.com>
Subject: [amsat-bb] Re: NASA's American Student Moon Orbiter...
To: "Trevor" <m5aka(AT)yahoo.co.uk>, "AMSAT BB" <amsat-bb(AT)amsat.org>
Message-ID: <00d901c8dc8b$9c04bc20$021410ac(AT)allgood.local>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Hi Trevor,
All you say is true of course but there could be a possibility to provide a
microwave tracking beacon that would be especially useful during the long
...maybe 15 month (depending on the type of propulsion eventually decided
upon), cruise phase in addition to the period whilst in lunar orbit and help
to populate our presently under-utilised uwave allocations..
And then if it had a really sensitive GPS receiver..as already demonstrated
by AO40 out to 60+k kilometres, modulating the signal, it would be even
better...sorry mission creep strikes again:)
cheers
Graham G3VZV
----- Original Message -----
From: "Trevor" <m5aka(AT)yahoo.co.uk>
To: "AMSAT BB" <amsat-bb(AT)amsat.org>
Sent: Wednesday, July 02, 2008 9:53 PM
Subject: [amsat-bb] Re: NASA's American Student Moon Orbiter...
> --- On Wed, 2/7/08, Dave hartzell <hartzell(AT)gmail.com> wrote:
>> http://www.spaceref.com/news/viewpr.html?pid=25839
>> http://asmo.arc.nasa.gov/
>>
>> Wouldn't it be fun to have a transponder on this! ;-)
>
> Fun yes, but dare I say it, a waste of precious Volunteer resources.
>
> All lunar orbits are inherently unstable and will impact after a couple of
> years. The link budget requirements would not attract a mass user base.
>
> I suspect the number of Technically Capable volunteers is already being
> thinly stretched in trying to provide both the primary objective Phase-IV
> Lite (funded by Federal Government dollars) and the secondary objective
> the Eagle HEO.
>
> 73 Trevor M5AKA
>
>
>
> __________________________________________________________
> Not happy with your email address?.
> Get the one you really want - millions of new email addresses available
> now at Yahoo! http://uk.docs.yahoo.com/ymail/new.html
>
> _______________________________________________
> Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 10
Date: Wed, 02 Jul 2008 17:05:18 -0500
From: Joe <nss(AT)mwt.net>
Subject: [amsat-bb] Re: NASA's American Student Moon Orbiter...
To: Andrew Glasbrenner <glasbrenner(AT)mindspring.com>
Cc: AMSAT BB <amsat-bb(AT)amsat.org>
Message-ID: <486BFB9E.1000808(AT)mwt.net>
Content-Type: text/plain; charset=us-ascii; format=flowed
what would a sample average link budget be?
Andrew Glasbrenner wrote:
>As far as I can recall we are pursuing both Eagle and the P4 opportunity
>equally, concentrating on common elements until the details are ironed out.
>Neither has been identified as a primary or secondary objective.
>
>I agree a package on a lunar orbiter would be neat, but also that it is not
>the best use of what volunteers we have. We need more folks to step up to do
>things, AND we need to make better use of them when they do.
>
>73, Drew KO4MA
>
>----- Original Message -----
>From: "Trevor" <m5aka(AT)yahoo.co.uk>
>To: "AMSAT BB" <amsat-bb(AT)amsat.org>
>Sent: Wednesday, July 02, 2008 4:53 PM
>Subject: [amsat-bb] Re: NASA's American Student Moon Orbiter...
>
>
>
>
>>--- On Wed, 2/7/08, Dave hartzell <hartzell(AT)gmail.com> wrote:
>>
>>
>>>http://www.spaceref.com/news/viewpr.html?pid=25839
>>>http://asmo.arc.nasa.gov/
>>>
>>>Wouldn't it be fun to have a transponder on this! ;-)
>>>
>>>
>>Fun yes, but dare I say it, a waste of precious Volunteer resources.
>>
>>All lunar orbits are inherently unstable and will impact after a couple of
>>years. The link budget requirements would not attract a mass user base.
>>
>>I suspect the number of Technically Capable volunteers is already being
>>thinly stretched in trying to provide both the primary objective Phase-IV
>>Lite (funded by Federal Government dollars) and the secondary objective
>>the Eagle HEO.
>>
>>73 Trevor M5AKA
>>
>>
>>
>> __________________________________________________________
>>Not happy with your email address?.
>>Get the one you really want - millions of new email addresses available
>>now at Yahoo! http://uk.docs.yahoo.com/ymail/new.html
>>
>>_______________________________________________
>>Sent via AMSAT-BB(AT)amsat.org. Opinions expressed are those of the author.
>>Not an AMSAT-NA member? Join now to support the amateur satellite program!
>>Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>>
>>
>
>_______________________________________________
>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: 11
Date: Wed, 2 Jul 2008 15:05:34 -0700
From: "Dave hartzell" <hartzell(AT)gmail.com>
Subject: [amsat-bb] Re: NASA's American Student Moon Orbiter...
To: Trevor <m5aka(AT)yahoo.co.uk>
Cc: AMSAT BB <amsat-bb(AT)amsat.org>
Message-ID:
<1c096fd70807021505q1ca33dddh39fae5ba03db341a(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
On Wed, Jul 2, 2008 at 1:53 PM, Trevor <m5aka(AT)yahoo.co.uk> wrote:
> Fun yes, but dare I say it, a waste of precious Volunteer resources.
Who said anything about volunteers?
> All lunar orbits are inherently unstable and will impact after a couple of
years. The link budget requirements would not attract a mass user base.
A couple of years is about all we get out of most satellites. The
link budgets would be challenging, but doable, especially with low
bit-rate data, like JT65 (moonbound with 50 watts on 2m). Remember,
AMSAT-DL is shooting the the Mars orbiter!
Anyway, its probably still a pipe dream (but one can always dream).
73,
Dave
AF6KD (ex n0tgd)
------------------------------
Message: 12
Date: Wed, 2 Jul 2008 18:13:36 -0400
From: Martha <martha(AT)amsat.org>
Subject: [amsat-bb] Office Closed
To: "Board of Directors" <bod(AT)amsat.org>, senior-officers
<senior-officers(AT)amsat.org>, amsat-bb(AT)amsat.org
Message-ID:
<956751cf0807021513h4a3b92acu9674d779dcd1b6b9(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
The AMSAT office will be closed on Friday, July 4th and Monday, July 7th.
--
73- Martha
------------------------------
Message: 13
Date: Wed, 2 Jul 2008 19:20:00 -0400
From: "John Price" <n4qwf1(AT)gmail.com>
Subject: [amsat-bb] Re: AO-51 Field Day mode
To: "Andrew Glasbrenner" <glasbrenner(AT)mindspring.com>,
"amsat-bb(AT)amsat.org" <amsat-bb(AT)amsat.org>
Message-ID:
<8d1b8e80807021620y4c345961n44e113dfa3691bbb(AT)mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
Drew,
Field Day was again much fun for all here in Lynchburg, Va. The
satellite station was a success and AO-51 was a big part of that. The
1.2 gig up link seems to intrigue those that have no experience with
anything above 450 mgh. This year was much easier as WA1ZMS was nice
enough to lend his Icom mobile radio.
My suggestion for next year would be a return to the QRP transonder
that we had a few years
back. One of the most unique contacts we ever had was that year. We
did it in the middle of the night using a Kewood D-7 handheld and a
Arrow antenna. The crowd present included a banker who pointed the
antenna, a lawyer who held the remote speaker, a retired school
teacher who logged the contact, and myself a retired Deputy Sheriff
who did the calling. The excitement when we finally made contact with
a VE station just as we approached to the edge of the foot print was
shared by all. This is the kind of stuff good field day memories are
made of. Lets do it again.
73's << John
On Wed, Jul 2, 2008 at 5:04 PM, Andrew Glasbrenner
<glasbrenner(AT)mindspring.com> wrote:
> In reading through the e-mails to -bb, it seems L/U was well received among
> the membership on Field Day? I'd be interested in feedback about Field Day
> for consideration of next year's mode. Feel free to cc the -bb, as I'm sure
> it's of interest to many.
>
> 73, Drew KO4MA
>
> PS Congratulations to the handful of stations who were listening to AO-16
> Saturday afternoon and Sunday morning. I manually turned the satellite on
> several times on each of three passes, and several stations managed QSOs in
> the brief periods the old bird stayed on. Myself and the other command
> station will continue to try to restart the repeater when available, and
> maybe as temperatures change it will stay on a little longer, but no
> promises can be made.
>
> _______________________________________________
> 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
>
--
N4QWF Amateur Radio Operator
AO-7,AO-16,AO-27,SO-50,AO-51,VO-52
Internet N4QWF(AT)AMSAT.ORG
Echolink node #110903
Formerly KC4AHW VK3FEZ
Amsat Member #27845
DXCC #33,478
VUCC SAT #135
WAS SAT #296
51 on 51 #13
LON -79.256 LAT 37.459 Grid FM07il
>From the Foothills of the Blueridge
*Life should not be a journey to the grave with the intention of
arriving safely in a pretty and well preserved body, but rather to
skid in broadside, thoroughly used up, totally worn out, and loudly
proclaiming - "WOW, What a ride!"
------------------------------
Message: 14
Date: Wed, 02 Jul 2008 23:43:54 +0000
From: w7lrd(AT)comcast.net
Subject: [amsat-bb] Re: Commercial Mode L Antenna sources
To: Wayne Estes <w9ae(AT)charter.net>, amsat-bb(AT)amsat.org
Message-ID:
<070220082343.14479.486C12B9000F3C440000388F22165514060B9D04C999(AT)comc
ast.net>
Content-Type: text/plain
Hi Wayne and all
I agree a four footer would be good for L/S. I used a four foot primestar for
AO-40 (sobsob) on S band. I now have as yet untried dual feed for L/S for the
same dish. I'm waiting fo the energy to connect everything up and give it
try. I need another downconverter and a bird 43 L band slug, for tweeking.
The feed is two concentric helix feeds on the same form for L/S. Should I not
get desense to to proximity of the feeds it will be my future L/S antenna.
Yes the primestar is solid and heavy, being off center feed it will lend
itself to helix as opposed to a patch feed. I have heard the 3731AA
downconverters from K5GNA have a good front end. I also have a UEK 3000
downconverter. Which will be be better, I don't know as yet. If anyone has
tread here before I would appreciate your input.
73 Bob W7LRD
Seattle
--
"if this were easy, everyone would be doing it"
-------------- Original message --------------
From: Wayne Estes <w9ae(AT)charter.net>
> I'm surprised how few people have mentioned parabolic dishes during this
> discussion about commercial Mode L antennas. L-band uplinks are mostly
> used in combination with a S-band downlink. Most people build L/S
> equipment with HEO satellites in mind. A single yagi or helix doesn't
> usually provide sufficient gain for L/S band use with a HEO satellite.
> You need the gain of a dish for satisfactory S-band reception of a HEO
> satellite. So one practical solution is an oversized dish with a L/S
> dual-band feed (helix or patch). A 4-foot dish was proven to work well
> for this on AO40. In my opinion a single 4-foot dish is more practical
> than, for example, cobbling together multiple yagi/helix antennas for
> S-band downlink and multiple yagi/helix antennas for L-band uplink.
>
> My 4-foot dish and dual-band patch feed were purchased commercially from
> Teksharp (Rick Fletcher KG6IAL).
> http://www.plumdragon.com/teksharp/hr_AO-40_products.htm
> The dual-band patch feed is sold fully assembled and tested, but the
> dish was a kit. I had to locally purchase 1/4 inch hardware cloth, cut
> it into 8 "petals", and use 200 zip ties to attach the petals to the
> frame of the dish. A mesh dish has somewhat less wind loading than a
> solid dish. That's important because a solid 4-foot dish has a maximum
> wind load of more than 12 square feet, exceeding the wind load rating of
> my G-5500 rotor. A picture of my satellite antennas can be seen here:
> http://s238.photobucket.com/albums/ff239/Wayne_Estes/Ham%20Radio/
>
> Wayne Estes W9AE
> Oakland, Oregon, USA, CN83ik
> _______________________________________________
> 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: Wed, 2 Jul 2008 20:28:00 -0400
From: "Andrew Glasbrenner" <glasbrenner(AT)mindspring.com>
Subject: [amsat-bb] Re: NASA's American Student Moon Orbiter...
To: "Joe" <nss(AT)mwt.net>
Cc: AMSAT BB <amsat-bb(AT)amsat.org>
Message-ID: <2B1393BF84D44604884DB4D133FA6DA9(AT)Andrewlaptop>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
The moon is roughly 360,000 to 400,000 km away. By comparison, AO-40 had a
apogee of about 60,000km. At 2.4Ghz, that's about 16db difference each way.
Put AO-40 at the moon, and if I'm doing this right, you'd need about 32
times the ground station antenna both coming and going to get with a few db.
I'm gonna need a bigger rotor for sure! I'm sure smarter folks will check my
math....
73, Drew KO4MA
----- Original Message -----
From: "Joe" <nss(AT)mwt.net>
To: "Andrew Glasbrenner" <glasbrenner(AT)mindspring.com>
Cc: "Trevor" <m5aka(AT)yahoo.co.uk>; "AMSAT BB" <amsat-bb(AT)amsat.org>
Sent: Wednesday, July 02, 2008 6:05 PM
Subject: Re: [amsat-bb] Re: NASA's American Student Moon Orbiter...
> what would a sample average link budget be?
>
> Andrew Glasbrenner wrote:
>
>>As far as I can recall we are pursuing both Eagle and the P4 opportunity
>>equally, concentrating on common elements until the details are ironed
>>out. Neither has been identified as a primary or secondary objective.
>>
>>I agree a package on a lunar orbiter would be neat, but also that it is
>>not the best use of what volunteers we have. We need more folks to step up
>>to do things, AND we need to make better use of them when they do.
>>
>>73, Drew KO4MA
>>
>>----- Original Message -----
>>From: "Trevor" <m5aka(AT)yahoo.co.uk>
>>To: "AMSAT BB" <amsat-bb(AT)amsat.org>
>>Sent: Wednesday, July 02, 2008 4:53 PM
>>Subject: [amsat-bb] Re: NASA's American Student Moon Orbiter...
>>
>>
>>
>>>--- On Wed, 2/7/08, Dave hartzell <hartzell(AT)gmail.com> wrote:
>>>
>>>>http://www.spaceref.com/news/viewpr.html?pid=25839
>>>>http://asmo.arc.nasa.gov/
>>>>
>>>>Wouldn't it be fun to have a transponder on this! ;-)
>>>>
>>>Fun yes, but dare I say it, a waste of precious Volunteer resources.
>>>
>>>All lunar orbits are inherently unstable and will impact after a couple
>>>of years. The link budget requirements would not attract a mass user
>>>base.
>>>
>>>I suspect the number of Technically Capable volunteers is already being
>>>thinly stretched in trying to provide both the primary objective Phase-IV
>>>Lite (funded by Federal Government dollars) and the secondary objective
>>>the Eagle HEO.
>>>
>>>73 Trevor M5AKA
>>>
>>>
>>>
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>>
>>_______________________________________________
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>>
>>
>>
>>
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End of AMSAT-BB Digest, Vol 3, Issue 330
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