I know this thread is a few months old but I just happened across it and thought it was important to have the correct info.
NONE of this is against the law. Here is the federal criminal code in relevant part;
18 USC § 2511 - Interception and disclosure of wire, oral, or electronic communications prohibited
(g) It shall not be unlawful under this chapter or chapter 121 of this title for any person—
(i) to intercept or access an electronic communication made through an electronic communication system that is configured so that such electronic communication is readily accessible to the general public;
(ii) to intercept any radio communication which is transmitted—
(I) by any station for the use of the general public, or that relates to ships, aircraft, vehicles, or persons in distress;
(II) by any governmental, law enforcement, civil defense, private land mobile, or public safety communications system, including police and fire, readily accessible to the general public;
NO ONE has ever been prosecuted for relaying to a third party the information heard in the lawful way described above. That is because it is NOT ILLEGAL. There is no law which says it is illegal to tell a third party something which you and the rest of the general public have lawful access to. That would be absurd. "Everyone can hear the information but no one can tell anyone else they heard it" would be the result.