While doing the Macarena Frank Glover said to Bob Morgan: 
 FG> But being on the far side of the Moon will block *all* rf noise
 FG> from Earth, leaving only signals from lunar 
 FG> orbiting sats, and any
 FG> manned/unmanned probes in deep space, which 
 FG> could easily be allowed
 FG> for. 
 I wonder if this would block all rf from the sun too....
 FG> Depending on the size of the dish, we might even pick up an alien
 FG> civilization's `local' communications, too. (As opposed to signals 
 FG> intentionally transmitted for the purpose of contacting other
 FG> civilizations.) 
 I'm faliliar with the inverse square law dealing with light.  Does it
 apply to radio frequencies as well?
 FG> There was an interesting article in the April 1977 Popular
 FG> Electronics about how future hobbyists on the Moon could DX Earth
 FG> radio. Seems, among other things, that a typical FM broadcast station
 FG> would be easily recieved from there, with a modest directional
 FG> antenna, and a normal reciever. The problem would be in recieving
 FG> signals from multiple stations on the same frequency, that are well
 FG> out of range of each other. And the mostly horizontal pattern of VHF
 FG> and UHF broadcast stations mean that only those stations on Earth's
 FG> limb (or, looking at it another way, those stations for whom the Moon
 FG> is near the horizon, rising or setting) would be most easily recieved.
 Wow!  That has some interesting possiblities!
 FG> Personally, if I had a chance to go on a shuttle mission, in
 FG> addition to some ham contacts (KA2WQA), I'd bring a scanner to see
 FG> what terrestrial reception at those altitudes is like.... 
 FG> And still closer to Earth, in addition to RFI hazards to the
 FG> plane's systems, those who try to use a cellphone at altitude
 FG> complicate things on the ground because they can easily hit many cell
 FG> sites at once..... 
 This is due to line-of-sight phenomenon?
 Bob
... A mind is a terrible thing to.. OOOOH!  New computer game!!
--- Blue Wave/Max v2.30
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