[amsat-bb] Foliage Attenuation at 2400mhz?

[AA2AE <aa2ae@xxxxxxxxxxxxx>]

Group

I was wondering what to expect from AO-40's 2400mhz downlink when beaming
through the tall trees in my back yard. Since AO-40's orbit is such that
beaming due south through the trees ( I live in the northeast ) can't be
helped, my reception will suffer to a certain degree during the year when
the trees are full with leaves.

Has anyone noted a difference when beaming through trees, with and without
leaves? I'm sure moisture content in the leaf itself, and the leaf density
the signal has to beam through plays any important part in how much
attenuation takes place, but is there a general "rule of thumb" expressed in
db for this band?

Thanks

Tony - AA2AE

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