[amsat-bb] Re: 10mtr and Galileo

Trevor m5aka at yahoo.co.uk
Mon Sep 11 14:04:17 PDT 2006

--- jules at g0nzo.co.uk wrote:
> 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

For me the key point is that Peter estimated that a single Amateur Radio beacon
operating at 1296 MHz such as that at Martlesham could force every Galileo
receiver out of lock over a radius of 16 km (10 miles).

It's not just the increase in noise floor that needs to be considered, it's the
concern that a typical Amateur station will jam Galileo receivers over a wide
area. If at some point in the future that transponder were used for what might
be losely interpreted as "safety critical" applications then  would forsee
Amateur Radio activities either being suspended or power levels being severely
curtailed in 1260-1300 MHz.

Now it's going to be 2012 before they get the Galileo system fully operational
so we should at least get 4 years use out of the P3E "L" uplink. What happens
post 2012 is a big unknown.

73 Trevor M5AKA

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