124Standard Event Code Warning Watch Advisory DescriptionWFA Wild Fire Watch X Wild FireWFW Wild Fire Warning X Wild FireWSA Winter Storm Watch X Winter StormWSW Winter Storm Warning X Winter Storm**A Unrecognized Watch X Unrecognized**E UnrecognizedEmergency X Unrecognized**S UnrecognizedStatement X Unrecognized**W Unrecognized Warning X UnrecognizedContinuous Tone Coded Squelch System (CTCSS) and Digital Coded Squelch(DCS) are two methods used to prevent interference by other radio communications.Your scanner can receive transmissions that use these codes.CTCSS and DCS systems all use some form of coded squelch. Coded squelchinvolves the transmission of a special code signal along with the audio of a radiotransmission. A receiver with coded squelch only activates when the received signalhas the correct code. This lets many users share a single frequency, and decreasesinterference caused by distant transmitters on the same channel. In all majormetropolitan areas of the United States, every available radio channel is assigned tomore than one user.CTCSS TONESThe scanner can detect the following 50 CTCSS tones.67.0Hz 94.8Hz 131.8Hz 171.3Hz 203.5Hz69.3Hz 97.4Hz 136.5Hz 173.8Hz 206.5Hz71.9Hz 100.0Hz 141.3Hz 177.3Hz 210.7Hz74.4Hz 103.5Hz 146.2Hz 179.9Hz 218.1Hz77.0Hz 107.2Hz 151.4Hz 183.5Hz 225.7Hz79.7Hz 110.9Hz 156.7Hz 186.2Hz 229.1Hz82.5Hz 114.8Hz 159.8Hz 189.9Hz 233.6Hz85.4Hz 118.8Hz 162.2Hz 192.8Hz 241.8Hz
