[amsat-bb] Re: European Lunar Lander - Call for Declarations
wageners at gmail.com
Mon Jun 4 00:26:20 PDT 2012
That's a very helpful and constructive discussion. It will certainly allow
for better assessment of the feasibility, options and limitations.
On Sat, Jun 2, 2012 at 8:54 PM, i8cvs <domenico.i8cvs at tin.it> wrote:
> Hi Peter, DB2OS
> I was reading the document in particular point 2.2.2
> Communication and 2.2.3 but in my opinion the Radio
> Hams are off side because everyting has been already
> designed and in my opinion there is no room available
> on the Lander for a Moon-Earth experimental communication
> transponder in our L band and S band because our antennas
> are too big.
> Since the main 7.2 and 8.5 GHz X band High Gain Antennas
> of the Lander are oriented toward the Earth in a fixed position
> to compensate the pointing for libration probably only a 5 watt
> pep and a circularly polarized horn on our 10.5 GHz should be
> 73" de
> i8CVS Domenico
> ----- Original Message -----
> From: "Peter Guelzow" <peter.guelzow at kourou.de>
> To: <amsat-bb at amsat.org>
> Sent: Sunday, June 03, 2012 12:57 AM
> Subject: [amsat-bb] Re: European Lunar Lander - Call for Declarations
> Hi together,
> Please also have a look at this document:
> in particular see point 2.2.2 Communication and 2.2.3:
> "Visibility of the Earth from the landing site imposes the following
> • communications shall only be possible within a 13.7 day (TBC) window
> each month, and shall depend on the availability of the ground station."
> "the mean power available for an individual payload is expected not to
> exceed 20W"
> 73s Peter DB2OS
> On 03.06.2012 00:29, Peter Guelzow wrote:
> > Check also this discussion from James Miller, G3RUH:
> > http://www.amsat.org/amsat/articles/g3ruh/110.html
> > 73s Peter, DB2OS
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