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@g0nzo.co.uk To: amsat-bb@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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