[amsat-bb] Re: 10mtr and Galileo

[joseph Murray]

John I am confused

Please provide something to cure my problem

I believe at this point that the Galileo bird transmits to receivers on
the ground 
in the current amateur mode L up link  spectrum.
Right or wrong?
What frequency in the same amateur L mode spectrum is the Galileo using
for receiving.

Joe Murray K0VTY
Amsat #860
==============
On Mon, 11 Sep 2006 02:47:22 -0000 "John B. Stephensen"
<kd6ozh at comcast.net> writes:
> What bothered people is the fact that we need high power L-band 
> uplinks and
> the statement in the report that "there is the potential for most 
> amateur 23
> cm transmissions to interfere with Galileo unless the Galileo 
> receivers are
> designed and built to withstand it".
> 
> 73,
> 
> John
> KD6OZH
> 
> ----- Original Message ----- 
> From: <jules at g0nzo.co.uk>
> To: <amsat-bb at amsat.org>
> Sent: Sunday, September 10, 2006 23:37 UTC
> Subject: [amsat-bb] Re: 10mtr and Galileo
> 
> 
> > Just for the record, the first Galileo satellite has already been
> launched:
> > http://news.bbc.co.uk/2/hi/science/nature/4566264.stm
> >
> > Also there was a study made by the UK microwave group (the body
> representing
> > UK amateur interests above 1GHz), which makes interesting reading. 
> It
> > suggests that the signals from Galileo would have little impact 
> on
> > terrestrial/EME 23cms opperation. Obviously the conclusions woule 
> require
> a
> > little re-interpretation, with respect to satellite based 
> reception. But
> as
> > Galileo transmissions will presumably be aimed at the earth, so 
> that any
> > amatuer satellite will receive signals greater than that on earth, 
> for a
> > minute part of it's orbit, I would think that the conclusions 
> drawn would
> > still be valid. It's an interesting read:
> > http://www.microwavers.org/papers/iaru/C5-13_Galileo.pdf
> >
> > Jules
> > G0NZO
> >
> >
> > >Speaking of allocations being taken away, I just can't fathom the 
> AMSAT
> > >decision to drop L-Band up because of the "Galileo Affair." Now 
> that's a
> > >decision based on "crystal ball engineering" and not fact. I've 
> even read
> > >that if Galileo ever was launched - and that appears in the 
> latest press
> to
> > >be questionable" the US "would has threatened to shoot them 
> down!"
> > >
> > >Regards...Bill - N6GHz
> >
> > _______________________________________________
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> _______________________________________________
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>