Public Switched Telephone Network.
Press to Talk. A switch used on microphones and control lines, to activate the voice path and activate transmitter circuitry.
Radiotelephony (i.e. voice).
Rescue Coordination Centre.
A mandatory Ship Reporting System for the Great Barrier Reef and Torres Strait. Otherwise known as the Great Barrier Reef and Torres Strait Ship Reporting System.
Rescue Coordination Centre (RCC)
A unit responsible for the efficient organisation of search and rescue services and the operation of these resources within a nominated area.
Receiver or receive frequency