[amsat-bb] Re: NASA's American Student Moon Orbiter...
glasbrenner at mindspring.com
Wed Jul 2 17:28:00 PDT 2008
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
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:
>>>>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
>>>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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