Cobra MR F45-D MRF45D_MANL_ENG - Page 31

Operating Your Radio Maintenance And Troubleshooting Maintenance • Very little maintenance is required to keep your CobraMarine VHF radio in good operating condition. I Keep the radio clean by wiping with a soft cloth and mild detergent. Rinse with fresh water. Do not use solvents or harsh or abrasive cleaners, which could damage the case or scratch the LCD screen. I If the radio is exposed to salt water, rinse it in fresh water at least once a day to prevent build-up of salt deposits, which could interfere with button operation. Troubleshooting • Problem No display on LCD when radio is turned On Possible Cause(s) Improper power connection Solution(s) Insure power connections are proper and secure Will transmit at one (1) watt, but not at 25 watts Selected channel is limited to one (1) watt Switch to another channel Will not transmit Selected channel is limited to receive only Switch to another channel No sound from speaker Volume level is too low or Readjust volume squelch level is too deep and squelch No answer to calls Out of range of other station Signal is blocked by terrain Switch to high power (25 watts) or move closer Move until you have a "line-of-sight" to the other station DSC distress cannot be sent MMSI (DSC self-identification) number is not entered Enter your MMSI number 56 English Operating Your Radio Specifications Specifications General Number of Channels Channel Spacing Modulation Input Voltage Current Drain: Stand-by Receive Transmit Temperature Range Unit Dimensions Unit Weight Receiver Frequency Range Receiver Type Sensitivity: 20 dB Quieting 12 dB Sinad AF Output Transmitter Frequency Range: TX RF Output Power Spurious Emissions Microphone Type Frequency Stability FM Hum and Noise • All U.S.A., Canadian, International and all NOAA Weather Channels 25 kHz 5 kHz Max. 13.8 VDC 20 mA 200 mA 5A @ High power 1A @ Low -15˚ C to +55˚ C 6.25" x 2.25" x 7.125" (15.9 cm x 5.7 cm x 18 cm) 2 lbs., 6.8 oz. (1100 g) 156.050 to 163.275 MHz Double Conversion Super-Heterodyne 0.35 uV 0.30 uV 4 Watts @ 8 Ohms 156.025 to 157.425 MHz 1 and 25 Watts -60 dB High -55 dB Low Electret +/-10 ppm 40 dB Nothing Comes Close to a Cobra® 57