47 CFR 80.467 - Duplication of VHF service.
No duplication of service areas as determined by subpart P of this part will be permitted by public coast stations operating on the same VHF public correspondence channel. Within the service area of a station, the ratio of desired to undesired co-channel signal strengths on public correspondence channels must be at least 12dB.
Title 47 published on 2013-10-01
no entries appear in the Federal Register after this date.