Cobra MR HH450 MR HH450 DUAL Manual - English - Page 31

Operating Your Radio Maintenance and Troubleshooting Intro Operation Customer Warranty Maintenance Assistance • Very little maintenance is required to keep your Cobra VHF/GMRS radio in good operating condition: n Keep the radInisotalalantiodn charCAgsusseitsortmacnecrleean by wiping with a soft cloth and mild detergent. Do not use solvents or harsh or abrasive cleaners, which could damage the case or scratch Secondary Icons the LCD screen. n If the radio is exposed to salt water, wipe with a soft, moist cloth at least once a day to prevent buildup of salt deposits, which could interfere with button operation. n I f the radio wiNloltibcee storeCdauftioonr a longWaprneinrgiod, such as over the winter, remove the batteries from the battery tray and store them in a separate package. This is especially important if you are using alkaline batteries. Troubleshooting • Problem No display on LCD when radio is turned On Batteries run down quickly Will transmit at one (1) or three (3) watts, but not at six (6) watts Will not transmit No sound from speaker No response to button press Possible Cause(s) Batteries are exhausted Batteries not installed properly Batteries are at the end of their life Batteries are low Selected channel is limited to one (1) watt Selected channel is limited to receive only Volume level is too low or squelch level is too deep Button lock is On Solution(s) Recharge or replace batteries Remove batteries and reinstall according to polarity markings Replace with new batteries Recharge or replace batteries Switch to another channel Switch to another channel Re-adjust volume and squelch Press and hold Backlight/ Key Lock button 56 English Introduction Specifications Intro Operation Customer Warranty Specifications Assistance • General Number of Channels All U.S., Canadian, and International Installation CAsuNCssitshOotmaaAnencrAenWelseather Channels, 15 GMRS Channel Spacing Secondary Icons VHF - 25 kHz Max., GMRS - 12.5 kHz Modulation VHF - 5 kHz Max., GMRS - 2.5 kHz Input Voltage 7.4 VDC Battery Life: 5% TX, 5% RX, 90% StanNdo-ticbey Lithium-ion: 8 hrs @ High Power, C1a4utiohnrs @ LoWwarnPingower; Current Drain: Stand-by Receive Transmit 45 mA 150 mA 1.8 A @ High power 650 mA @ Low Power Temperature Range -20˚C to 50˚C Radio Dimensions 4.8 in. x 2.4 in. x 1.4 in. (123 mm x 62 mm x 36 mm) not including antenna Radio Weight 0 lbs 8 oz. (228 g) without batteries Receiver Frequency Range VHF 156.050 to 163.275 MHz GMRS 462.5500 to 467.7250 MHz Receiver Type Marine VHF: Double Conversion Super-Heterodyne GMRS & WX: Low if direct conversion. Sensitivity (typical): Marine VHF: 12 dB Sinad: -121 dBm Adjacent Channel Selectivity Marine: 70dB, GMRS: 50dB, WX: 55dB (typical) Intermodulation and Rejection Marine: 70dB, GMRS: 65dB, WX: 55dB (typical) Spurious and Image Rejection Marine: 70dB, GMRS: 50dB, WX: 65dB (typical) AF Output 400 mW < 5% distortion @ 8 ohms Transmitter Frequency Range: TX VHF 156.025 to 157.425 MHz GMRS 462.5500 to 462.7250 MHz RF Output Power Marine:1, 3 & 6 Watts/GMRS: 1, 2 & 3 Watts Spurious Emissions -60 dBc @ High Power, -55 dBc @ Low Power Microphone Type Condenser Frequency Stability +/-5 ppm FM Hum and Noise 40 dB Specifications subject to change without notice. Nothing Comes Close to a Cobra® 57