I am planning to beam radio signal into space.

I am going to build a transmitter to
beam radio signal into space.
hopping one day ET may receive my signal and maybe come to visit me.

I live in a remote place (inside jungle) some where in south east asia.
So I don't need to apply license from the government.
(no way for the government to detect my signal).

Currently I own a dish size 3 meter.
Is it enough for this purpose, or do I
need a bigger dish?
And what frequency is the best?