FCC issued notice of proposed rulemaking Thurs. that seeks commen...
FCC issued notice of proposed rulemaking Thurs. that seeks comment on changes in use of airport terminal use (ATU) frequencies at 450-470 MHz in private land mobile radio industrial business pool. Action is response to petition for rulemaking submitted…
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by PCIA. Proposal sought comment on: (1) Deleting total output power limit for transmitters operating on ATU mobile-only frequencies and adopting general effective radiated power standard instead. (2) Converting power limit for base transmitters operating on ATU base/mobile frequencies from 20 w total output power to 100 w effective radiated power. Proposal said revising current power limits could aid airport terminal communications. But FCC said it still was concerned such changes could harm aviation-related communications, public safety, railroad and utility operations and wireless medical telemetry service systems. (3) Potential adverse impact on operations of non- ATU firms that were co-channel licensees. Point of existing rules, some of which date back to 1968, is to protect ATU communications at 242 airports from interference caused by secondary users of that spectrum. PCIA, which is frequency coordinator, stressed need for changes because existing power limits often were too restrictive because their limits typically didn’t reach large distances and underground facilities of current airports. Comments are due 30 days after publication in Federal Register publication, reply comments 15 days later.