[amsat-bb] Re: 144 Mhz contact made using ISS as passive reflector
aa2tx at comcast.net
Wed Dec 12 07:16:00 PST 2007
At 11:49 PM 12/11/2007, Greg D. wrote:
>I thought of doing this back in October, when all the Sputnik-1 /
>early satellite discussion was happening. Echo-1, and all
>that. But, I would think that NASA (if not the crew) would frown on
>a bunch of folks on the ground hurling a few megawatts EIRP at their
>home in outer space. If Bob had to have a bazillion levels of
>safety in place for the little PCSAT-2 transmitter, I would think
>this would be right up there in the safety category, no?
>I haven't done the math yet... Are we far enough away that 1/x**2 saves us?
The ISS flies through the 217 MHz AFSSS Radar Fence 6 times a day and
it has an ERP of over 6,000 megawatts. It is only for about a second
at the peak but even the sidelobes are much higher than anything
a ham station could possibly come up with - no problem.
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