"Roger Long" wrote in news:L1BRg.55834$8j3.9392
@twister.nyroc.rr.com:

How do all those radar's out there avoid interfering with each other?
Are they all on slightly different frequencies (that seems like a lot
of frequencies) or do they just know that pulses that come back within
a narrow time window are the ones they sent out?

Larry?



The modern processing does look for the same repetition rate they are
transmitting, which is different from one to the other. Radars are awful
broadband transmitters because they are pulse transmitters.

The other thing that "protects" them is they don't radiate it all like your
VHF in all directions at once. You'll see interference on yours from time
to time. It looks like bars radiating out from your boat as the other
guy's radar just SWAMPS your receiver with his blast of RF, blinding yours
for a sweep.

Luckily, there aren't many radars on the air where you happen to be,
especially in the broad expanse of the sea.



--
There's amazing intelligence in the Universe.
You can tell because none of them ever called Earth.