the likely answer on the legal front is probably "it depends"
on the federal front, it looks like this is covered in section 705 of the communications act:
(fcc synopsis here)http://www.fcc.gov/guides/interception- ... unications
the code itself here (for some reason they refer to it as 605 in the code itself)http://www.law.cornell.edu/uscode/text/47/605
the relevant part is section a part 6.. starting around here:This section shall not apply to the receiving, divulging, publishing, or utilizing the contents of any radio communication which is transmitted by any station for the use of the general public
as referenced in the synopsis, it is up to the FCC to interpret what the code means, it would be (if it came to their desk) up them to decide if police scanner traffic is "for the use of the general public".
on the state/local front things are likely more murky.. for example, some states/localities were trying to pass law to prohibit the 'misuse' of rebroadcasted police scanner traffic.. nevada may be no different.
now, even if you were able to prove that its legal both federally and locally ... you may still encounter official types who enforce the rules based on their gut feeling, and theres not much you can do about that.. unless you want to be charged with disobeying an officer/disorderly conduct/disturbing the peace and risk being arrested for resisting arrest.
with that said.. there are TONS of people rebroadcasting police scanner traffic.. streaming over the internet.. its a hobby and many people enjoy it..
people are broadcasting now in nevada:http://www.broadcastify.com/listen/stid/32/publicsafety
or, newspapers/news orgs get together to broadcast:http://www.cleveland.com/policescanner/
the big concern lately with these things, police scanners, is the transition to digital/encrypted signals that the public cannot listen to.. i.e. they arent broadcast in the clear for everyone to pick up.http://usatoday30.usatoday.com/tech/new ... 51319598/1http://www.denverpost.com/news/ci_22958 ... ent-public
it seems clear to me that at least federally, it doesnt seem to be illegal to stream this over the internet (though, it may be possible for certain folks to interpret that otherwise)... state/local it may be more uncertain (do some research)... but, people are currently broadcasting from nevada so i doubt its explicitly illegal (or unenforced unless its convenient/expedient to do so).. whatever the case may be.. the whole operation may be shut down by someone demanding you do so without any legal justification..
its probably a lot like the whole 'recording videos of the police as they do their job' thing..... a lot of them really dont like it, but its probably legal.. dont expect them to not harass/arrest/detain you for doing it though!http://www.politico.com/blogs/under-the ... 58828.html