Stay safe and in touch with this dependable Class D DSC approved VHF radio featuring an integrated GPS receiver. The versatile RS20S is ideal for a variety of boats from small RIBs to larger cruisers, and is designed to match the low-profile style of our glass bridge displays and accessories.An Easy to Use Radio for Any VesselSee clearly in bright daylight with a high contrast black-on-white display, and inverted white-on-black night mode. A rotary dial makes channel selection easy, while large buttons provide quick access to other key functions. Dedicated Channel 16 keys, found on both the radio and its fist microphone, offer instant access to the emergency channel. An included gimbal bracket enables simple table-top, overhead, or bulkhead installation. Flush-mount installation is also possible, with an easy mount-from-front solution, to match the low-profile style of our glass bridge displays and accessories.Class D DSC ApprovedDSC, or “Digital Selective Calling”, makes it easier to stay in touch with other boaters and enables you to broadcast your boat’s location during an emergency. If you find yourself in trouble, the RS20s dedicated “distress” button will initiate a DSC distress call that sends your boat’s position to anyone within VHF range. Used together with a traditional radio distress call, this makes it easier for other boaters with DSC-capable radios to register your situation and come to your aid. An integrated GPS receiver means your position can be sent even if your boat’s other electronics are powered down.Easy Access to All International ChannelsThe RS20S is designed for global use and supports all international channels. With tri-channel watch, easily scan between the current channel, emergency channel 16, and another user-configurable priority channel. Alternatively, scan through all available channels or just your selected favourites. Emergency channels can be given priority when scanning to reduce the chance of missing distress calls or other urgent safety messages.FeaturesHigh-visibility display with inverted night modeIntuitive rotary dial and keypad controlsFour-button fist microphoneClass D DSC approvedIntegrated GPS receiverNMEA 2000 connectivityDedicated emergency channel keyTri-channel watch functionAll international channelsEasy bracket or flush-mount installationSpecificationsPower supply: 12 Volt DCNominal operating voltage: +13.6 Volt DCLow battery alert: 10.5 Volt DC +/- 0.5 VOver voltage protection: > 15.8 V +/- 0.5 VCurrent drain (Transmit @1W (12 V DC)): 6 A @ 25 W / 1.5 A @ 1W (12 V DC)Current drain (Receive): Less than 450 mA in standbyReplacement fuse: 8 A, Glass type 3 AG (1.25″)Temperature range: -20 C to +55 C (-4 F to 131 F)Usable channels: International, USA, CanadaMode (FM): 16K0G3EMode (DSC): 16K0G2BDSC mode: Class D (Global) with dual receiver (individual CH70)Standards – EU: EN60950-1, IEC 60529, EN 60945, EN 301 843-1 V2.1.1, EN301 843-2 V2.1.1, EN 301 025 V2.1.1, EN 300 698 V2.1.1Standards – US/CAN: FCC Part 80, RSS-Gen Issue 4, RSS-182 Issue 5Standards – INT: AS/NZS 4415.1:2003Frequency range (Transmitter): 156.025 – 157.425 MHzFrequency range (Receiver): 156.050 – 163.275 MHzChannel spacing: 25 KHzFrequency stability: 5 ppmFrequency control: PLLLCD display (viewing): 42 mm x 34 mm (1.65 x 1.3), FSTNContrast control: YesBacklight control: YesGPS antenna connector: SMA (female)VHF antenna connector: SO-239 (50 ohm)Waterproof: IPX7Compass safe distance: 0.5 m (1.5)External speaker: YesNMEA 0183 port: YesNMEA 0183 input: RMC, GGA, GLL, GNSNMEA 0183 output: DSC ( for DSC call), DSE (for enhanced position)Flush mount kit: YesLocal/Distant control: YesPosition polling: YesGroup call: YesCall logs: Yes – 20 individual and 10 distressChannel naming: YesTri watch: YesFavourite channel scan: YesAll scan: YesUser programmable MMSI: YesMMSI and NAME directory: Yes – 20 numbers and groupTransmitter frequency error: 1.5 KHzTransmitter protection: Open / short circuit of antennaMaximum frequency deviation: 5Spurious & harmonics Hi/Lo: 0.25 WModulation distortion (3KHz): 10 %S/N at 3KHz deviation): 40 dBAudio response (at 1KHz): +1 to -3dB of 6 dB/octave from 300 Hz to 3 KHzDSC TX deviation (at 1.3K): 2.6 0.26 KHzDSC TX deviation (at 2.1K): 4.2 0.42 KHzATIS TX deviation (at 1.3 KHz): 1.3 0.13 KHzATIS TX deviation (at 2.1 KHz): 2.1 0.21 KHzSINAD sensitivity (12dB): 0.25 V (distant) / 0.8 V (local)SINAD sensitivity (20dB) : 0.35 VAdjacent CH selectivity: More than 70dBSpurious response: More than 70dBIntermodulation rejection: More than 68dBResidual noise levlel: More than -40dB unsquelchedAudio output Powper: 2 W (with 8 ohm at 10% distortion) and 4 W (with 4 ohm external speaker)Receiving frequency: 157