[amsat-bb] ECHO Power budget / space.

["Andrew Rich" <vk4tec@xxxxxxxxxxx>]

I was sitting there looking at the satellite tracker and was picking up echo
about S1 at best.

I thought to myself that was pretty good, for 1 Watt of power on 70cm to
travel some 1200 KM's
according to my satellite tracker.

Not bad when you think about it. With all the terestrial rubbish I have
problems getting 20 watts from 200km's away.

My next question is, does earths's atmosphere contribute to attenuation of
radio signals ?

Do radio signals in space "GO" further ? Due to the vacuum of space ? And do
the waves "bend" on hitting the earths
atmosphere ?

Cheers Andy vk4tec
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