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Glossary of Terms
All Scan | Scans all channels |
ATIS | Automatic Transmission Identification |
| System; used for inland waterways in some |
| European countries |
Canadian Channels | Channel designator as defined by Industry |
| Canada |
Carrier Wave | A Radio Frequency on which intelligence is |
| superimposed. |
DSC | Digital Selective Calling |
Dual Watch | Monitor channel 16 while working on another |
| channel |
Duplex | Transmit and receive on different frequencies |
ETSI | European Telecommunications Standards |
| Institute |
FM | Frequency Modulation |
International Channels .... | Channel designator as defined by the ITU |
ITU | International Telecommunications Union |
LCD | Liquid Crystal Display |
Memory Scan | Scans only user selected memory channels |
MMSI | Maritime Mobile Service Identity; a number |
| issued by each country to identify maritime |
| stations. |
NOAA | National Oceanographic and Atmospheric |
| Administration |
PTT switch | Microphone |
RF | Radio Frequency |
RTCM | Radio Technical Commission for Maritime |
| Services |
RX | Receiver |
Simplex | Transmit and receive on the same frequency |
Squelch | A circuit that sets the threshold for cutting off |
| the receiver when the signal is too weak for |
| reception of anything but noise |
TX | Transmit |
US Channels | Channel designations as defined by the FCC |
VHF | Very High Frequency 30MHz to 300MHz |
Weather Channels | Channels for routine and emergency weather |
| information broadcast by NOAA |